Entries |
Document | Title | Date |
20080199774 | Membrane electrode assembly with electrode support - A membrane electrode assembly (MEA) for an electrochemical cell including: a first electrode; a second electrode; and a proton exchange membrane (PEM) interposed between the first and second electrodes such that protons can pass between the first and second electrodes across the PEM; wherein the first electrode has a foraminous metallic substrate to provide support for the PEM. | 08-21-2008 |
20080199775 | BATTERY, EXAMINATION METHOD AND MANUFACTURING METHOD FOR NEGATIVE ELECTRODE THEREOF, AND EXAMINATION APPARATUS AND MANUFACTURING APPARATUS FOR NEGATIVE ELECTRODE THEREOF - In a method for examining a negative electrode of a battery, a total thickness of a current collector and an active material layer is measured. Then, in order to estimate a composition of the active material layer, the total resistivity of the current collector and the active material layer is measured. | 08-21-2008 |
20080206638 | ENERGY CONVERSION DEVICE - A secondary battery comprises a single-plate lead acid battery (Va), a positive electrode capacitor layer and a negative electrode capacitor layer, which are formed on the respective surfaces of a positive electrode plate, and a negative electrode plate. Each of the positive electrode plate and negative electrode plate contains an active material, to have a configuration in which activated carbon has a concentration gradient. The electronic resistance between a collector terminal and the center of a portion where activated carbon is present at a high concentration is lower than the electronic resistance between the collector terminal and the center of a portion where activated carbon is present at a low concentration. In the single-plate lead acid battery, charges are accumulated in the positive electrode capacitor layer and in the negative electrode capacitor layer. | 08-28-2008 |
20080206639 | ACTIVE MATERIAL PARTICLE FOR ELECTRODE, ELECTRODE, ELECTROCHEMICAL DEVICE, AND PRODUCTION METHOD OF ELECTRODE - An active material particle for electrode includes an active material body | 08-28-2008 |
20080206640 | ELECTRODE STRUCTURE AND METHOD OF MANUFACTURING THE SAME, AND BATTERY AND METHOD OF MANUFACTURING THE SAME - An electrode capable of preventing variations in electrical performance to stabilize performance and improve yields is provided. An electrode structure includes: an electrode including an current collector and an active material layer arranged on the current collector; and an electrode lead arranged on the active material layer, wherein a hole is arranged so as to penetrate the electrode and the electrode lead, and the electrode and the electrode lead are folded back around the hole in a direction away from the hole so that the electrode is placed inside, and the thickness of the active material layer in a region where the electrode lead is not arranged is uniform, and the thickness of the active material layer in a region where the electrode lead is arranged is nonuniform. | 08-28-2008 |
20080213662 | RETICULATED AND CONTROLLED POROSITY BATTERY STRUCTURES - The effective ionic conductivity in a composite structure is believed to decrease rapidly with volume fraction. A system, such as a bipolar device or energy storage device, has structures or components in which the diffusion length or path that electrodes or ions must traverse is minimized and the interfacial area exposed to the ions or electrons is maximized. The device includes components that can be reticulated or has a reticulated interface so that an interface area can be increased. The increased interfacial perimeter increases the available sites for reaction of ionic species. Many different reticulation patterns can be used. The aspect ratio of the reticulated features can be varied. Such bipolar devices can be fabricated by a variety of methods or procedures. A bipolar device having structures of reticulated interface can be tailored for the purposes of controlling and optimizing charge and discharge kinetics. A bipolar device having graded porosity structures can have improved transport properties because the diffusion controlling reaction kinetics can be modified. Graded porosity electrodes can be linearly or nonlinearly graded. A bipolar device having perforated structures also provides improved transport properties by removing tortuosity and reducing diffusion distance. | 09-04-2008 |
20080220330 | Bipolar Electrode Batteries and Methods of Manufacturing Bipolar Electrode Batteries - The disclosure relates to bipolar cells including electrodes surrounding a collector. Embodiments of the bipolar cells include a collector containing a highpolymer material. The disclosure also relates to bipolar electrode batteries containing bipolar cells including a collector body containing electrically conductive highpolymer or electrically conductive particles distributed in a high-polymer. By adding such high molecular weight polymer material to the collector, the weight of the collector may be reduced and the output power density per weight of the battery may be improved. The disclosure further relates to methods of forming collecting bodies and electrodes for bipolar cells using an inkjet printing method. Bipolar cells according to the present invention may be used to fabricate batteries such as lithium ion batteries, which may be connected to form battery modules used, for example, to provide electrical power for a motor vehicle. | 09-11-2008 |
20080233476 | Electrode for battery and fabricating method thereof - An electrode for a battery includes a thin plate current collector and an active material layer coated on the current collector. The current collector is provided at a top surface with a coated current collector part and an uncoated current collector part adjacent to the coated current collector part. The uncoated current collector part has less yield stress than the coated current collector part. | 09-25-2008 |
20080241684 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous insulating layer and a nonaqueous electrolyte. The porous insulating layer is provided between the positive electrode material mixture layer and the negative electrode material mixture layer and contains a material which does not have a shutdown function. The positive electrode is provided with a PTC layer extending substantially parallel to the positive electrode collector and the negative electrode is provided with a PTC layer extending substantially parallel to the negative electrode collector. Each of the PTC layers contains a material having a positive temperature coefficient of resistance. | 10-02-2008 |
20080241685 | ANODE AND LITHIUM-ION SECONDARY BATTERY - An anode for lithium-ion secondary battery is provided as one capable of ensuring sufficient safety (suppression of dendrites) while achieving a higher capacity (higher density of the electrode), and permitting formation of a lithium-ion secondary battery with excellent high-rate discharge performance. An anode for lithium-ion secondary battery has a current collector, and an active material-containing layer formed on the current collector, the active material-containing layer is comprised of an outermost layer disposed on the farthest side from the current collector, and a lower layer composed of at least one layer disposed between the outermost layer and the current collector, and a degree of flexion of the outermost layer is smaller than that of the lower layer. | 10-02-2008 |
20080248385 | Nonaqueous Electrolyte Secondary Battery - A nonaqueous electrolyte secondary battery of the present invention includes a nonaqueous electrolyte and a positive electrode | 10-09-2008 |
20080248386 | ELECTRODES WITH RAISED PATTERNS - Provided is an electrode for an electrochemical cell that includes a current collector, and an active material in electrical contact with the current collector, wherein the electrode has a raised pattern as well as a method of making and using the same and also for electrochemical cells incorporating the same. | 10-09-2008 |
20080248387 | ANODE AND LITHIUM-ION SECONDARY BATTERY - An anode is provided as one capable of suppressing rapid entrance/exit of lithium ions during quick charge-discharge and ensuring sufficient safety in use as an anode of a lithium-ion secondary battery. The anode is an anode for lithium-ion secondary battery having a current collector, and an active material-containing layer formed on the current collector, wherein the active material-containing layer is comprised of an outermost layer disposed on the farthest side from the current collector, and a lower layer composed of at least one layer disposed between the outermost layer and the current collector, and wherein a degree of flexion of the outermost layer is larger than a degree of flexion of the lower layer. | 10-09-2008 |
20080254364 | ALKALINE DRY BATTERY - An alkaline dry battery of this invention includes: a cylindrical positive electrode mixture having a hollow and including at least one of manganese dioxide powder and nickel oxyhydroxide powder; a gelled negative electrode including zinc alloy powder; a separator interposed between the positive electrode mixture and the gelled negative electrode; a negative electrode current collector inserted into the gelled negative electrode; and a negative electrode terminal plate electrically connected to the negative electrode current collector. The gelled negative electrode is filled in the hollow of the positive electrode mixture with the separator interposed therebetween. The height L | 10-16-2008 |
20080261111 | CONDUCTOR-MIXED ACTIVE ELECTRODE MATERIAL, ELECTRODE STRUCTURE, RECHARGEABLE BATTERY, AND MANUFACTURING METHOD OF CONDUCTOR-MIXED ACTIVE ELECTRODE MATERIAL - An object of the present invention is to enhance the electrical conductivity between active electrode materials, enhance the electrical conductivity between an active electrode material and an electrical conduction assistant agent, and enhance the conductivity between the active electrode material and a current collecting material. This invention is related in principle to a conductor-mixed active electrode material which is processed by stirring and mixing an active electrode material and a conductive material together with hard balls, an electrode structure utilizing this conductor-mixed active electrode material, a rechargeable battery, and a method of fabricating the conductor-mixed active electrode material. | 10-23-2008 |
20080268337 | Polymer battery and related method - A polymer battery is provided with a positive electrode active material layer, a negative electrode active material layer placed in opposition to the positive electrode active material layer, a polymer electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer, and a distance defining member included in the polymer electrolyte layer to define a distance between the positive electrode active material layer and the negative electrode active material layer. | 10-30-2008 |
20080274403 | ANODE FOR SECONDARY BATTERY HAVING NEGATIVE ACTIVE MATERIAL WITH NANO-FIBER NETWORK STRUCTURE AND SECONDARY BATTERY USING THE SAME, AND FABRICATION METHOD OF NEGATIVE ACTIVE MATERIAL FOR SECONDARY BATTERY - There is provided a metal oxide having a continuous nano-fiber network structure as a negative active material for a secondary battery. A method for fabricating such negative active material for a secondary battery comprises spinning a mixed solution of a metal oxide precursor and a polymer onto a collector to form composite fibers mixed with the metal oxide precursor and the polymer, thermally compressing or thermally pressurizing the composite fibers, and thermally treating the thermally compressed or thermally pressurized composite fibers to remove the polymer from the composite fiber. | 11-06-2008 |
20080280201 | NEGATIVE ELECTRODE FOR USE WITH SECONDARY BATTERY AND SECONDARY BATTERY USING SUCH NEGATIVE ELECTRODE - A negative electrode for a secondary battery includes a negative electrode current collector and a negative electrode active material layer provided in the negative electrode current collector and which is alloyed with the negative electrode current collector at least at a part of an boundary face between it and the negative electrode current collector, wherein the negative electrode current collector has a first surface on which the negative electrode active material layer is formed and a second surface on which the negative electrode active material layer is not formed, the negative electrode having a portion in which the second surfaces of the negative electrode current collector are opposed to each other. | 11-13-2008 |
20080286651 | Hybrid Thin-Film Battery - An electrochemical device is claimed and disclosed wherein certain embodiments have a cathode greater than about 4 μm and less than about 200 μm thick; a thin electrolyte less than about 10 μm thick; and an anode less than about 30 μm thick. Another claimed and disclosed electrochemical device includes a cathode greater than about 0.5 μm and less than about 200 μm thick; a thin electrolyte less than about 10 μm thick; and an anode less than about 30 μm thick, wherein the cathode is fabricated by a non-vapor phase deposition method. A non-vacuum deposited cathode may be rechargeable or non-rechargeable. The cathode may be made of CF | 11-20-2008 |
20080292961 | LITHIUM-ION SECONDARY BATTERY - The present invention provides a lithium-ion secondary battery which can suppress internal resistance to a small value. The lithium-ion secondary battery includes a winding group obtained by winding a positive electrode plate and a negative electrode plate via a separator. An end portion of a positive electrode mixture non-application portion | 11-27-2008 |
20080299455 | ELECTRIC STORAGE DEVICE AND FABRICATING METHOD THEREFOR - An electrode laminate unit | 12-04-2008 |
20080305393 | LITHIUM-ION SECONDARY BATTERY - A lithium-ion secondary battery where a current collecting member and a foil are joined to each other securely while damage of the foil is suppressed is provided. The lithium-ion secondary battery is provided with a winding group obtained by winding a positive electrode plate and a negative electrode plate via a separator. An end portion of a positive electrode mixture non-application portion and an end portion of a negative electrode mixture non-application portion project at an upper portion and a lower portion of the winding group, respectively. Current collecting disks | 12-11-2008 |
20080305394 | SECONDARY BATTERY AND METHOD OF PRODUCING THE SECONDARY BATTERY - A secondary battery includes: an electric cell layer including a stack structure sequentially including: a positive electrode layer, a separator layer, and a negative electrode layer having an electrolyte higher in conductivity than an electrolyte of at least one of the separator layer and the positive electrode layer. | 12-11-2008 |
20090017376 | LAMINATE TYPE BATTERY - A battery including an electrode and electrode terminal, the electrode comprising a multilayered collector assembly having a multilayered portion that includes an insulation layer and two electrically conductive layers disposed on opposite sides of the insulation layer, and a conductive portion made of an electrically conductive material, connected to the two conductive layers and extending therefrom more toward a side end of the electrode than a side end of the insulation layer so as to be electrically connected to the electrode terminal, and a pair of active material layers disposed on opposite sides of the multilayered portion. | 01-15-2009 |
20090017377 | CURRENT COLLECTOR, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A current collector including a substrate, a plurality of projections, and a chipped portion is provided. The substrate is a metal sheet. The projections are formed on the surface of the substrate. The chipped portion is an aggregate of two or more, preferably 2 to 100 of minute projections. The minute projections are formed on the substrate surface, and are the protrusions having the height of below 35% of the average height of the projections. By forming an electrode active material layer on the face of the current collector where the projections are formed to make an electrode, the detachment of the electrode active material layer, and the spread of the detachment are significantly curbed. By using this electrode, a non-aqueous electrolyte secondary battery which have high battery capacity and energy density, excellent charge and discharge cycle characteristics, and which is capable of keeping a high-output stably for a long period of time can be obtained. | 01-15-2009 |
20090023064 | Safety-Enhanced Electrochemical Device - The present invention relates to an electrode comprising electrode active material particles, conductive particles, a binder and wax, wherein the electrode active material particles are interconnected by a network of the conductive particles, and the paths of the conductive particles interconnecting the electrode active materials are partially or entirely fixed by the wax. Furthermore, the present invention provides an electrochemical device comprising the electrode. | 01-22-2009 |
20090029251 | SECONDARY BATTERY, MANUFACTURING METHOD THEREOF AND SYSTEM THEREOF - The invention provides a secondary battery that has good adhesion between a thin substrate and an active material, is thinner and lighter in weight, has flexibility, and has excellent charge/discharge characteristics, and a method of manufacturing the secondary battery. The secondary battery includes a cell having, in order, a positive electrode active material layer, an electrolyte layer, and a negative electrode active material layer, or a cell having, in order, a negative electrode active material layer, an electrolyte layer, and a positive electrode active material layer, wherein the cell is formed on a conductive thin substrate having a surface roughness RMS of 0.8 μm or less. | 01-29-2009 |
20090075171 | Anode of a lithium battery and method for fabricating the same - An anode of a lithium battery includes a composite film, the composite film comprising a carbon nanotube film structure and a plurality of nanoscale tin oxide particles dispersed therein. A method for fabricating an anode of a lithium battery, the method includes the steps of: (a) providing an array of carbon nanotubes; (b) pulling out, by using a tool, at least two carbon nanotube films from the array of carbon nanotubes to form a carbon nanotube film structure; and (c) dispersing a plurality of nanoscale tin oxide particles in the carbon nanotube film structure to form a composite film, and thereby, achieving the anode of the lithium battery. | 03-19-2009 |
20090075172 | ELECTRIC STORAGE DEVICE - A negative electrode | 03-19-2009 |
20090098457 | ELECTRODE FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREOF AND SECONDARY BATTERY EMPLOYING THE SAME - Provided are an electrode for a secondary battery employing an active material layer having improved thickness uniformity by printing low-viscosity ink on the active material layer, a manufacturing method of the electrode, and a secondary battery having improved electrode capacity due to the employing of the electrode. The electrode includes a current collector, and an active material layer formed by printing ink having a viscosity not exceeding 500 mPa·s on the current collector and drying the current collector, wherein the current collector has a surface roughness (Ra) in a range from about 0.025 to 1.0 μm. | 04-16-2009 |
20090098458 | ANODE AND BATTERY - A battery capable of obtaining superior cycle characteristics and safety is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has an insulative coat on an anode active material layer provided on an anode current collector. The coat contains an insulating material such as a meal hydroxide and a metal oxide. The coat is in a form of plate divided into a plurality of portions. The insulation property of the coat prevents internal short circuit. A plurality of portions of the coat prevent separation of the anode active material layer and decomposition of the electrolytic solution. Further, even when short circuit occurs, heat generation is prevented by heat absorption characteristics of the coat. | 04-16-2009 |
20090098459 | ELECTROCHEMICAL ELEMENT, AND METHOD AND APPARATUS FOR MANUFACTURING ELECTRODE THEREOF - A method for manufacturing an electrode of an electrochemical element includes: (A) forming an active material layer on a current collector; and (B) providing lithium to the active material layer. The A step and the B step are carried out in continuous space. | 04-16-2009 |
20090104524 | PROCESS FOR PRODUCING BATTERY ELECTRODES, ELECTRODES PRODUCED BY THIS PROCESS, AND BATTERIES CONTAINING SUCH ELECTRODES - A process for producing at least one lead battery electrode ( | 04-23-2009 |
20090104525 | Secondary battery and manufacturing method thereof - In a secondary battery, a positive metal foil having a laminated portion in which parts of the metal foil are laminated in close contact with each other, and a positive electrode current collector terminal member has a contact portion placed in close contact with at least one side of the positive foil laminated portion in a lamination direction thereof The secondary battery is manufactured by welding the parts of the positive metal foil to each other and the positive foil laminated portion and the contact portion to each other by irradiation of an energy beam emitted to travel in the lamination direction while an irradiation site is moved. | 04-23-2009 |
20090104526 | POWDER FOR POSITIVE ELECTRODE AND POSITIVE ELECTRODE MIX - The powder for a positive electrode of the present invention comprises a positive electrode active material powder comprising primary particles and aggregated particles of primary particles, 90% or more of particles out of primary particles and aggregated particles of primary particles in the powder having a particle diameter of 0.01 μm or more and 5 μm or less, and comprises a graphite powder comprising graphite particles, 90% or more of particles out of graphite particles in the powder having a particle diameter of 0.1 μm or more and 10 μm or less as a maximum particle diameter. When the powder for a positive electrode is used for a nonaqueous electrolyte secondary battery, it becomes possible to exhibit a high discharge capacity and also exhibit a high output at a high current rate. | 04-23-2009 |
20090111021 | HIGH DISCHARGE RATE BATTERIES - Improved electrode compositions including fluorinated carbon materials. The electrode compositions can include combinations of subfluorinated carbon materials with more than 10 wt % electrically conducting material. The electrode compositions can also include combinations of subfluorinated carbon materials with a different fluorinated carbon material. These electrode compositions are suitable for use in electrochemical devices such as primary batteries, secondary batteries, and supercapacitors and can provide enhanced performance at high discharge rates compared to conventional CF | 04-30-2009 |
20090117460 | SAFE RESERVE ACTIVATED LITHIUM ION BATTERY - A reserve activated lithium ion battery is provided with a number of safety features designed to prevent a thermal run-away condition. The reserve activated battery may include a non-flammable electrolyte, a phosphate-based cathode, an anode with a non-fluorinated binder, and/or a solid electrolyte interface on the anode. | 05-07-2009 |
20090123837 | Lithium rechargeable electrochemical cell - This invention concerns a lithium rechargeable electrochemical cell comprising an electrochemically addressable electrode system. The electrodes are composed of a cathodic lithium insertion material ( | 05-14-2009 |
20090130557 | POSITIVE ELECTRODE COLLECTOR FOR LEAD ACID STORAGE BATTERY AND METHOD FOR PRODUCING THE SAME - A positive electrode current collector for lead-acid batteries contains a current collector substrate of titanium or a titanium alloy, a coating of titanium oxide formed on the surface of the current collector substrate, and a conductive ceramic layer formed on the surface of the coating, and the thickness of the coating is 0.09 μm or thinner. | 05-21-2009 |
20090148768 | Cell electrode plate and process for producing the same - A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency. | 06-11-2009 |
20090148769 | DENDRITE-FREE LITHIUM ELECTRODE AND METHOD OF MAKING THE SAME - The present invention provides a method of modifying a surface of a lithium electrode, e.g. a negative lithium electrode, for a battery cell. The method comprises the step of applying a thin layer of a carbonaceous material onto the surface of the lithium electrode. The method further comprises the step of applying a pressure to the thin layer and to the surface to promote tight contact between the surface and the thin layer. The method further comprises the step of storing the thin layer and the lithium electrode in an atmosphere comprising carbon dioxide (CO | 06-11-2009 |
20090169993 | WOUND ELECTROCHEMICAL DEVICE AND METHOD OF MANUFACTURING SAME - A wound electrochemical device has a wound body formed by winding a multilayer member including a multilayer structure composed of a positive electrode, a separator, and a negative electrode; wherein each of the positive and negative electrodes, includes a structure having an active material layer formed on both sides of a current collector; wherein the wound body has a space at a center portion thereof; and wherein the smallest radius of curvature R of a curved part in an innermost circumferential portion of the wound body satisfies the following expression (1): | 07-02-2009 |
20090191459 | Electrode for nonaqueous electrolyte secondary battery - An electrode ( | 07-30-2009 |
20090191460 | NONAQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - An object of the present invention is to provide a nonaqueous secondary battery with high capacity and less cycle degradation and a method for producing thereof. The nonaqueous secondary battery of the present invention comprises a positive electrode having a positive electrode current collector and a positive electrode mixture layer disposed on the positive electrode current collector, a negative electrode having a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector and a separator disposed between the positive electrode and the negative electrode, wherein the positive electrode mixture layer or the negative electrode mixture layer contains active material particles and a particulate binder adhered to the surface of the active material particles. | 07-30-2009 |
20090191461 | ELECTRODE FOR ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE - An electrode is used for an electric storage device that includes plural electrodes that are stacked such that an ion-conductive layer is disposed between each pair of the electrodes. Each of the plural electrodes includes a current collector, and an electrode layer, formed on the current collector, which contains an active material. The configuration of the electrode layer (for example, the amount of the active material) varies according to the position in the electrode layer such that a current density in a first region of the electrode, where heat radiation performance is lower than the heat radiation performance in a second region of the electrode, is lower than the current density in the second region of the electrode. | 07-30-2009 |
20090197170 | MAXIMIZATION OF ACTIVE MATERIAL TO COLLECTOR INTERFACIAL AREA - A current collector for a battery in an implantable medical device is presented. The current collector comprises a conductive layer which includes a first surface and a second surface. A plurality of apertures are formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures is greater than 0.65. | 08-06-2009 |
20090197171 | ELECTRIC STORAGE DEVICE - An electric storage device | 08-06-2009 |
20090197172 | METHOD FOR MANUFACTURING LITHIUM ION SECONDARY BATTERY - A method for manufacturing a lithium ion secondary battery comprises the step of sintering a laminate sandwiched by setters disposed on both sides of the laminate having only interfaces between an electrolyte green sheet and a positive electrode green sheet and/or a negative electrode green sheet. A lithium ion secondary battery manufactured by the method described above is also provided. | 08-06-2009 |
20090208841 | METHOD FOR PRODUCING ELECTRODE SHEET - This invention discloses a method for producing an electrode sheet adapted to high-temperature drying and to charge and discharge under high voltage, comprising applying onto a collector a slurry which comprises an electrode active material, electroconductive agent, binder and solvent, using as the binder fibrid of meta-aramid, and pressing the electrode sheet. | 08-20-2009 |
20090208842 | SEPARATOR, METHOD FOR MANUFACTURING SEPARATOR, AND NONAQUEOUS ELECTROLYTE BATTERY - A separator having a fine porous structure and including a polyolefin thermoplastic resin and a block copolymer as constituent materials is provided. The block copolymer including a monomer unit derived from a polyolefin resin and a monomer unit derived from a polymer component, The polyolefin resin has a melting point lower than that of the polyolefin thermoplastic resin, the polymer component being incompatible with polyolefin. | 08-20-2009 |
20090208843 | ELECTRODE FOR A BATTERY - An electrode for a bipolar cell or battery includes a plate-like body made of hardened resin containing particles of titanium suboxide or other electrically conductive particulate arranged to form electrical paths. A method of testing the body for porosity is also disclosed. | 08-20-2009 |
20090233171 | Process to Produce Electrode Sheet - This invention provides a method to produce an electrode sheet adaptable to high-temperature drying and to charge and discharge under high voltage, by coating a collector with a slurry which comprises electrode active material, electroconductive agent, binder and solvent, and then drying the same, wherein meta-aramid is used as binder, and wherein thus dried electrode sheet is compressed. | 09-17-2009 |
20090246627 | BATTERY PACK - A battery pack that enhances the reliability and coupling force of a connection member electrically connecting two protective circuit boards is disclosed. The battery pack includes: a secondary battery including a positive electrode and a negative electrode; a first protective circuit board electrically connected to the battery; a second protective circuit board electrically connected to the first protective circuit board; and at least one conductive plate coupled to one surface of the first protective circuit board and one surface of the second protective circuit board. | 10-01-2009 |
20090246628 | ANODE AND SECONDARY BATTERY - A secondary battery capable of improving cycle characteristics is provided. An anode includes: an anode active material layer on an anode current collector, the anode active material layer including a plurality of anode active material particles, in which the average particle area of the plurality of anode active material particles observed from a surface of the anode active material layer is within a range of 1 μm | 10-01-2009 |
20090246629 | MANUFACTURING METHOD OF ELECTRODE, ELECTRIC STORAGE DEVICE, AND INTERMEDIATE LAMINATE MEMBER - In a current collector laminating step, a current-collector laminate unit | 10-01-2009 |
20090253037 | METHOD OF PRODUCING NANOPARTICLES, NANOPARTICLES, AND LITHIUM BATTERY COMPRISING ELECTRODE COMPRISING THE NANOPARTICLES - A method of preparing nanoparticles includes using low-temperature plasma and a pulsed second process gas. Nanoparticles having uniform sizes and nanoparticles having a core-shell structure may be formed. A lithium battery includes an electrode that includes the nanoparticles. | 10-08-2009 |
20090263716 | ANODE MATERIAL HAVING A UNIFORM METAL-SEMICONDUCTOR ALLOY LAYER - The present invention relates to methods for producing anode materials for use in nonaqueous electrolyte secondary batteries. In the present invention, a metal-semiconductor alloy layer is formed on an anode material by contacting a portion of the anode material with a solution containing metals ions and a dissolution component. When the anode material is contacted with the solution, the dissolution component dissolves a part of the semiconductor material in the anode material and deposit the metal on the anode material. After deposition, the anode material and metal are annealed to form a uniform metal-semiconductor alloy layer. The anode material of the present invention can be in a monolithic form or a particle form. When the anode material is in a particle form, the particulate anode material can be further shaped and sintered to agglomerate the particulate anode material. | 10-22-2009 |
20090269665 | Power Storage Device - The invention provides a power storage device capable of preventing reduced energy efficiency of the power storage device and of avoiding variations in temperature distribution. The power storage device includes a positive electrode and a negative electrode, and a solid electrolyte layer placed between the positive electrode and the negative electrode and including a group of particles, wherein the density of particles in a first area of the solid electrolyte layer is lower than the density of particles in a second area which has higher heat radiation than the first area. | 10-29-2009 |
20090280406 | SECONDARY BATTERY - A secondary battery comprising at least an electrode assembly having a positive electrode plate, a negative electrode plate and a porous insulation layer arranged in a manner that an exposed portion of a current collector provided at one edge of at least one of the positive electrode plate and the negative electrode plate protrudes from the porous insulation layer, current collector members each connected to respective one of the positive electrode plate and the negative electrode plate, and a bend preventing part whose size smaller than a width of the exposed portion of the current collector, provided in a position of the exposed portion of the current collector. | 11-12-2009 |
20090280407 | BATTERY, ELECTRODE, AND CURRENT COLLECTOR USED THEREFOR - The present invention relates to a current collector including a base portion with a flat face, primary projections projecting from the flat face, and secondary projections projecting from the top of the primary projections. The present invention also relates to a current collector including a base portion with a flat face and primary projections projecting from the flat face, wherein the roughening rate of the top of the primary projections is 3 to 20. By using such a current collector, separation of the active material from the current collector can be inhibited when using an active material that has a high capacity but undergoes a large expansion at the time of lithium ion absorption. | 11-12-2009 |
20090286157 | Surface modification agents for lithium batteries - An active material for an electrochemical device may have a surface modification agent that is a silane, organometallic compound, or a mixture of two or more of such compounds. Both negative and positive electrodes may be prepared from the surface modified active materials. The surface of an electrode may be modified by adding the surface modification agent to a non-aqueous electrolyte used in constructing a battery. An electrode or active material may be modified with a surface modification agent in either the gas phase or in solution. Slurries of the active agent may be prepared and the surface modification agent added, the slurry then be used to cast an electrode that is then dried. | 11-19-2009 |
20090325066 | SECONDARY BATTERY HAVING IMPROVED FLEXIBILITY - A secondary battery with improved flexibility. The secondary battery includes: a substrate; a first electrode collector integrally formed with the substrate as one body; a first electrode material mixture layer; an electrolyte layer; a second electrode material mixture layer; and a second electrode collector having a metallic mesh structure integrally formed with the second electrode material mixture layer as one body, wherein the first electrode material mixture layer, the electrolyte layer, and the second electrode material mixture layer are sequentially formed on the first electrode collector in this order. | 12-31-2009 |
20100003598 | ELECTRODE FOR A POWER STORING APPARATUS AND POWER STORING APPARATUS PROVIDED WITH THAT ELECTRODE - An electrode for a power storing apparatus has a collector and a plurality of electrode patterns formed on at least one surface of the collector. An electrode pattern in a region where heat is radiated less than in other region, from among the plurality of electrode patterns, has a lower formation density than an electrode pattern in the other region. | 01-07-2010 |
20100003599 | METHOD FOR PRODUCING CURRENT COLLECTOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An objective is to improve the mechanical strength and the durability of a current collector for a non-aqueous electrolyte secondary battery and to allow an active material layer to be efficiently carried on the surface of the current collector with high adhesion. This objective is achieved with the use of a pair of processing means being disposed such that the surfaces thereof are in press contact with each other to form a press nip for passing a sheet material therethrough and having a plurality of recesses formed on the surface of at least one of the processing means, by passing a metallic foil for current collector through the press nip between the processing means to perform compression, thereby to form a plurality of projections on at least one surface of the metallic foil for current collector by partial plastic deformation associated with the compression. | 01-07-2010 |
20100015525 | ELECTRODE ACTIVE MATERIAL AND MANUFACTURING METHOD OF SAME - Electrode active material of the invention is mainly an amorphous transition metal complex represented by A | 01-21-2010 |
20100028775 | BATTERY - The battery of the invention has a positive-electrode layer | 02-04-2010 |
20100035148 | NON-AQUEOUS ELECTROLYTE BATTERY AND POSITIVE ELECTRODE, AND METHOD FOR MANUFACTURING THE SAME - A non-aqueous electrolyte battery includes a positive electrode having a positive electrode active material layer provided on a positive electrode collector, a negative electrode and a non-aqueous electrolyte, wherein the positive electrode active material layer contains a polyvinylidene fluoride-containing binder and a nano ceramic particle having a primary particle size of not more than 100 nm; and the binder and the nano ceramic particle are complexed. | 02-11-2010 |
20100035149 | Carbon material and a process for its manufacture - A carbon material suitable as a negative electrode material for a lithium ion battery which can suppress decomposition of a nonaqueous electrolytic solution, which has excellent compressibility capable of highly dense packing, and which can form an electrode of high capacity without worsening charge and discharge efficiency or cycling performance. Graphite powder A having an average particle diameter of 10-30 μm and a specific surface area S1 of at most 12.5 m | 02-11-2010 |
20100035150 | ELECTRIC STORAGE DEVICE - An electrode laminate unit of an electric storage device includes positive electrodes, negative electrodes and a lithium electrode connected to the negative electrode. When an electrolyte solution is injected into the electric storage device, lithium ions are emitted from the lithium electrode to the negative electrode. A positive and a negative electrode current collector have through-holes that guide the lithium ions in the laminating direction. The aperture ratio of the through-holes at the edge parts where the electrolyte solution is easy to be permeated is set to be smaller than the aperture ratio at central parts in order to suppress the permeation. Thus, the distribution of the electrolyte solution is made uniform, whereby the doping amount is made uniform. | 02-11-2010 |
20100040948 | ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - The present invention aims at providing an electrode giving a nonaqueous electrolyte secondary battery showing small variability in battery properties, and a nonaqueous electrolyte secondary battery using the same. | 02-18-2010 |
20100040949 | COATING LIQUID FOR USE IN FORMATION OF POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY - A coating liquid for use in formation of a positive electrode for a lithium secondary battery of the present invention includes a large-particle-size active material having an average particle diameter of 1 to 20 μm and a small-particle-size active material having an average particle diameter of 5 to 100 nm, such that the blending ratio by volume between two materials is 90:10 to 50:50, and the average particle diameter ratio (the average particle diameter of large-particle-size active material/the average particle diameter of small-particle-size active material) is from 50 to 500. The coating liquid is excellent in storage stability over a long period of time and makes dense packing of active material possible, and therefore a positive electrode produced with the use of the coating liquid of the present invention can provide a lithium secondary battery having a high energy density and a high capacity. | 02-18-2010 |
20100055562 | NANOWIRE LAYER ADHESION ON A SUBSTRATE - Techniques for forming nanowire layers on a substrate are provided. | 03-04-2010 |
20100055563 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE, NEGATIVE ELECTRODE MATERIAL, AND PREPARATION OF SI-O-AL COMPOSITE - An Si—O—Al composite comprising silicon, silicon oxide, and aluminum oxide exhibits a powder XRD spectrum in which the intensity of a signal of silicon at 28.3° is 1-9 times the intensity of a signal near 21°. A negative electrode material comprising the Si—O—Al composite is used to construct a non-aqueous electrolyte secondary battery which is improved in 1st cycle charge/discharge efficiency and cycle performance while maintaining the high battery capacity and low volume expansion upon charging of silicon oxide. | 03-04-2010 |
20100055564 | POROUS PROTECTIVE FILM LAYER-PROVIDED ELECTRODE, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING POROUS PROTECTIVE FILM LAYER-PROVIDED ELECTRODE - A porous protective film layer-provided electrode includes: an electrode is provided and having a collector and an electrode mixture layer disposed on the surface of the collector, the mixture layer containing an electrode active material and a first resin; and a porous protective film layer disposed on the surface of the electrode mixture layer, the film layer containing an inorganic filler and a second resin. A chemical bond including a structure represented by —O— or —O—Si— is present between the inorganic filler and the second resin. | 03-04-2010 |
20100055565 | ELECTRODE MANUFACTURING METHOD AND ELECTRODE - An electrode manufacturing method which can form a flat short-circuit prevention coating film (solid polyelectrolyte layer) having a uniform thickness and prevent short circuits from occurring in an electrochemical device is provided. The electrode manufacturing method comprises a first step of applying an active material layer coating material containing an active material particle, an active material layer binder, and a first solvent to a current collector so as to form a coating film made of the active material layer coating material; a second step of applying a second solvent to the coating film; and a third step of applying a solid polyelectrolyte layer coating material containing a solid polyelectrolyte, a solid polyelectrolyte layer binder, and a third solvent to the coating film coated with the second solvent. The first solvent is a good solvent for the active material layer binder, the second solvent is a poor solvent for the solid polyelectrolyte layer binder, and the third solvent is a good solvent for the solid polyelectrolyte layer binder. | 03-04-2010 |
20100062334 | COMPOSITION AND ENERGY STORAGE DEVICE - A composition includes a cathodic material comprising a support structure. The support structure includes copper and zinc, and has less than 1 weight percent of aluminum, tin, or aluminum and tin. An energy storage device includes a cathodic material having a support structure. | 03-11-2010 |
20100075223 | ENERGY STORAGE DEVICES - An energy storage device is provided. The energy storage device includes a positive electrode, a negative electrode covered by a protective layer, and an electrolyte. The positive electrode includes fast-energy-storage electrochemical capacitive materials coated on a current collector. The negative electrode includes metal materials capable of having electrochemical reactivity toward lithium ion. The protective layer includes oxides or hydroxides of the metal materials. | 03-25-2010 |
20100075224 | ELECTRODE - An electrode has a current collector having a plurality of through holes, and active material layers provided on both sides of the current collector, the current collector has projections extending on the top side or on the back side of the current collector from respective edges of the through holes, and an angle between each of the projections and a surface direction of the current collector is in the range of 30 to 80°. Because of the configuration wherein the projections are surrounded by the active material layers, a physical anchor effect is achieved so as to provide high adhesion. Since the projections are inclined relative to the surface direction of the current collector, the distance becomes shorter between the current collector including the projections and an active material, which was located apart from the projections in the case where the projections extended perpendicularly to the surface direction of the current collector. Therefore, electrically conducting paths become shorter and impedance is reduced. | 03-25-2010 |
20100086849 | Battery electrode and battery electrode manufacturing method - The invention provides a battery electrode manufacturing method that includes a composition adjusting process of adjusting an electrode layer forming composition that includes a first electrode material having a particle size that is larger than an opening size of a porous collector, and a second electrode material having a particle size that is smaller than the opening size of the porous collector; and an application process of applying the electrode layer forming composition to the porous collector. The invention also provides a battery electrode having an inner electrode layer and an outer electrode layer. | 04-08-2010 |
20100129710 | LITHOGRAPHICALLY PRINTED CELLS - There are disclosed cells ( | 05-27-2010 |
20100129711 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - This invention provides a negative electrode and a non-aqueous electrolyte secondary battery including the negative electrode. The negative electrode includes a Li-absorbing element as a negative electrode active material, is free from deformation, separation of the negative electrode active material layer from the negative electrode current collector, and deposition of lithium on the negative electrode current collector, and is excellent in cycle characteristic, large-current discharge characteristic, and low-temperature discharge characteristic. | 05-27-2010 |
20100136428 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The non-aqueous electrolyte secondary battery of the present invention is provided with an electrode plate group and a non-aqueous electrolyte, the electrode plate group including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, a positive electrode lead connected to the positive electrode, and a negative electrode lead connected to the negative electrode. The energy density of the electrode plate group is 750 Wh/L or higher by volume, and the cross-sectional area of at least one of the positive electrode lead and the negative electrode lead is 5.5×10 | 06-03-2010 |
20100183919 | Quantum dot ultracapacitor and electron battery - The present invention provides a solid-state energy storage device having at least one quantum confinement species (QCS), where the QCS can include a quantum dot (QD), quantum well, or nanowire. The invention further includes at least one layer of a dielectric material with at least one QCS incorporated there to, and a first conductive electrode disposed on a top surface of the at least one layer of the dielectric material, and a second conductive electrode is disposed on a bottom surface of the at least one layer of dielectric material, where the first electrode and the second electrode are disposed to transfer a charge to the at least one QCS, where when an electrical circuit is disposed to provide an electric potential across the first electrode and the second electrode, the electric potential discharges the transferred charge from the at least one QCS to the electrical circuit. | 07-22-2010 |
20100203383 | ION CONDUCTOR HAVING A GARNET STRUCTURE - The present invention relates to the use of chemically stable solid ion conductors having a garnet-like structure in batteries, accumulators, electrochromic devices and other electrochemical cells, and also novel compounds which are suitable for these uses. | 08-12-2010 |
20100203384 | ELECTRODE FOLDS FOR ENERGY STORAGE DEVICES - A stacked energy storage device (ESD) has at least two conductive substrates arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. Each active material electrode may have a plurality of folded sections and planar sections to increase the ESD capacity, for example, by increasing number of interfaces within each cell segment. | 08-12-2010 |
20100209773 | ELECTRODE SHEET, SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SECONDARY BATTERY - An electrode sheet of the present invention is a positive electrode sheet formed by laminating a conductive layer and a positive electrode active material layer in this order on each surface of a resin film, or is a negative electrode sheet formed by laminating a conductive layer and a negative electrode active material layer in this order on each surface of a resin film, each of the positive and the negative electrode active material layers being partially provided to the conductive layer, wherein the electrode sheet has a partially folded section where the electrode sheet with the conductive layer but without the positive and the negative electrode active material layers is folded twice or more in the same direction, and the conductive layers provided on the both surfaces of the resin film are electrically connected with each other in the folded section. | 08-19-2010 |
20100216020 | Battery and Method of Producing Battery - A battery comprises a battery cell | 08-26-2010 |
20100221606 | ENERGY STORAGE DEVICE WITH POROUS ELECTRODE - A method of fabricating an energy storage device with a large surface area electrode comprises: providing an electrically conductive substrate; depositing a semiconductor layer on the electrically conductive substrate, the semiconductor layer being a first electrode; anodizing the semiconductor layer, wherein the anodization forms pores in the semiconductor layer, increasing the surface area of the first electrode; after the anodization, providing an electrolyte and a second electrode to form the energy storage device. The substrate may be a continuous film and the electrode of the energy storage device may be fabricated using linear processing tools. The semiconductor may be silicon and the deposition tool may be a thermal spray tool. Furthermore, the semiconductor layer may be amorphous. The energy storage device may be rolled into a cylindrical shape. The energy storage device may be a battery, a capacitor or an ultracapacitor. | 09-02-2010 |
20100221607 | ELECTRODE PLATE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A non-aqueous electrolyte secondary battery of the present invention comprises a long core member and a material mixture layer formed thereon. The electrode plate has an exposed part of the core member formed along one side which is parallel to the longitudinal direction of the core member. The material mixture layer comprises a material that can absorb and desorb lithium ions. A porous film is formed on at least a part of the exposed part of the core member adjacent to an edge face of the material mixture layer and on the material mixture layer and is parallel to the exposed portion of the core member, and the thickness of the porous film is greater at the edge face of the material mixture layer which is parallel to the exposed part of the core member and located on the side of the exposed part of the core member than at a central portion of the material mixture layer in the width direction thereof. | 09-02-2010 |
20100233534 | RECHARGEABLE BATTERY, ANODE, AND CURRENT COLLECTOR - A rechargeable battery including a cathode and an anode each capable of inserting and extracting an electrode reaction material, and including an electrolyte, in which the anode includes an anode current collector which is formed by including a current collector body. The anode current collector is provided thereon with an active anode material layer, and a plurality of conductive particles disposed on the surface of the current collector body with the surface facing the active anode material layer. The plurality of conductive particles is formed to include spherical particles and plate-like particles. Since a tridimensional structure having irregularities is formed on the surface of the current collector body with the spherical particles and plate-like particles, anchoring effects are greatly increased. As a result, the adhesion of the active anode material layer to the anode current collector is considerably improved. | 09-16-2010 |
20100233535 | ELECTRODE PLATE FOR RECHARGEABLE BATTERY AND METHOD FOR FABRICATING THE SAME - An electrode plate of a rechargeable battery that is capable of preventing wastage of a base film and preventing an active material layer from being irregularly formed and a method for fabricating the same is disclosed. The electrode plate is fabricated by continuously coating the active material layer lengthwise along a surface of the base film and cutting the base film in a direction substantially perpendicular to a length of the base film or in a direction that forms a predetermined angle in relation to the length of the base film. The method includes forming an active material layer lengthwise on a base film except for on predetermined parts of both ends of the base film by continuously coating active materials, and forming an electrode plate by cutting the base film formed with the active material layer in a direction substantially perpendicular to the length of the base film using a cutter. | 09-16-2010 |
20100248026 | ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY - An electrode for a lithium ion secondary battery having a collector, an active-material layer formed on the collector and a protecting layer formed on the active-material layer, in which the protecting layer contains an organic particle formed of poly(methyl methacrylate) having a crosslinked structure, and the organic particle has an average particle size (D50) of 0.5 to 4.0 μm. | 09-30-2010 |
20100248027 | BATTERY ELECTRODE SHEET, METHOD AND BATTERY WITH THE SAME - A battery electrode sheet comprises a conductive substrate with two sides, and a first and second layer of an electrode material. The first and second layers of the electrode material are coated on at least one side of the conductive substrate. The first and second layers are deposited in separate steps. | 09-30-2010 |
20100261054 | Lithium Primary Cells - A method for treating a cathode electrode assembly. The method includes providing an electrode including iron disulfide and contacting the electrode with a solution including acid to remove impurities from the electrode. The electrode may then be dried under various conditions. The moisture content of the electrode after drying may be less than about 2500 ppm. | 10-14-2010 |
20100261055 | Lithium Primary Cells - A method for treating a cathode electrode assembly. The method includes providing an electrode including iron disulfide and contacting the electrode with water to remove impurities from the electrode. The electrode may then be dried under various conditions. The moisture content of the electrode after drying may be less than about 600 ppm. | 10-14-2010 |
20100261056 | ELECTRODE COLLECTOR FOR BATTERY AND USE THEREOF - The electrode collector | 10-14-2010 |
20100266896 | Composite Materials Including an Intrinsically Conducting Polymer, and Methods and Devices - A composite material in the form of a continuous structure comprises an intrinsically conducting polymer (ICP) layer coated on a substrate, the composite material having a surface area of at least 0.1 m | 10-21-2010 |
20100285356 | ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND METHOD FOR MANUFACTURING THE SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE ELECTRODE - An electrode for a rechargeable lithium battery and method of manufacturing a rechargeable lithium battery including the electrode is disclosed. In one embodiment, the electrode includes i) a current collector, ii) a first electrode composition layer provided on a surface of the current collector and iii) a second electrode composition layer farther than the first electrode composition layer from the current collector. Further, each of the first and second electrode composition layers comprises an active material and a conductive material, and wherein the amount of the conductive material of the first electrode composition layer is different from that of the conductive material of the second electrode composition layer. | 11-11-2010 |
20100297497 | ELECTRODE AND METHOD FOR PRODUCING ELECTRODE - Disclosed is an electrode ( | 11-25-2010 |
20100304215 | Material and device properties modification by electrochemical charge injection in the absence of contacting electrolyte for either local spatial or final states - In some embodiments, the present invention is directed to processes for the combination of injecting charge in a material electrochemically via non-faradaic (double-layer) charging, and retaining this charge and associated desirable properties changes when the electrolyte is removed. The present invention is also directed to compositions and applications using material property changes that are induced electrochemically by double-layer charging and retained during subsequent electrolyte removal. In some embodiments, the present invention provides reversible processes for electrochemically injecting charge into material that is not in direct contact with an electrolyte. Additionally, in some embodiments, the present invention is directed to devices and other material applications that use properties changes resulting from reversible electrochemical charge injection in the absence of an electrolyte. | 12-02-2010 |
20100330419 | ELECTROSPINNING TO FABRICATE BATTERY ELECTRODES - Provided are electrode assemblies that contain electrochemically active materials for use in batteries, such as lithium ion batteries. Provided also are methods for fabricating these assemblies. In certain embodiments, fabrication involves one or more electrospinning operations such as, for example, electrospinning to deposit a layer of fibers on a conductive substrate. These fibers may include one or more electrochemically active materials. In the same or other embodiments, these or similar fibers can serve as templates for depositing one or more electrochemically active materials. Some examples of active materials include silicon, tin, and/or germanium. Also provided are electrode fibers that include cores containing a first active material and shells or optionally second shells (surrounding inner shells) containing a second active material. The second active material is electrochemically opposite to the first active material. One or more shells can function as a separator and/or as an electrolyte. | 12-30-2010 |
20100330420 | METHOD FOR MANUFACTURING ELECTROCHEMICAL ELEMENT ELECTRODE - Includes the steps of preparing a sheet-like current collector | 12-30-2010 |
20110003202 | BINDER COMPOSITION FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a binder composition for a nonaqueous electrolyte secondary battery electrode including an antioxidizing agent, able to inhibit the thickening of an electrode slurry. The binder composition enables to form electrode slurry without making the antioxidizing agent adhere to the insides of fine pores of electrode active materials after coating and drying. The binder composition for a nonaqueous electrolyte secondary battery electrode contains a binder and an emulsified antioxidizing agent, and particularly, it is preferable that the binder is an aqueous binder including a diene-based polymer and that the antioxidizing agent is a polymeric phenol compound. | 01-06-2011 |
20110014519 | METHOD FOR FORMING DEPOSITED FILM - The present invention provides a vacuum deposition apparatus configured to simultaneously form a power collecting lead forming portion and an electrode active material portion of a lithium-ion secondary battery and having excellent mass productivity. With shutters | 01-20-2011 |
20110027648 | Three-dimensional microbattery with tricontinuous components - A three-dimensional battery architecture device comprising a porous substrate that has an aperiodic or random sponge network that forms the scaffolding of the first electrode (either cathode or anode) of a battery, a first coating deposited on the porous substrate, wherein the first coating is an electron insulating, ion-conducting dielectric material, and a second coating deposited in the remaining free volume, wherein the second coating is a an interpenetrating electrically conductive material that forms the second electrode (respectively anode or cathode) of the battery. A method of making a three-dimensional battery architecture device comprising depositing a first coating on a porous substrate wherein the porous substrate has an aperiodic or random sponge network and wherein the first coating forms the electrolyte of the battery and depositing a second coating on the first coating, wherein the second coating is a an interpenetrating electrically conductive material that forms the second electrode of the battery. | 02-03-2011 |
20110033746 | Self assembled multi-layer nanocomposite of graphene and metal oxide materials - Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device. | 02-10-2011 |
20110045347 | Self Assembled Multi-Layer Nanocomposite of Graphene and Metal Oxide Materials - Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device. | 02-24-2011 |
20110045348 | CATHODE ACTIVE MATERIAL COATED WITH RESISTANCE-REDUCTION COATING LAYER, AND ALL SOLID-STATE LITHIUM SECONDARY BATTERY USING THE SAME - In a cathode active material coated with a resistance-reduction coating layer for preventing formation of a resistive layer, which has a cathode active material and a resistance-reduction coating layer with which a surface of the cathode active material is coated, the resistance-reduction coating layer contains substantially no fine particles of the cathode active material. | 02-24-2011 |
20110064999 | RETICULATED AND CONTROLLED POROSITY BATTERY STRUCTURES - The effective ionic conductivity in a composite structure is believed to decrease rapidly with volume fraction. A system, such as a bipolar device or energy storage device, has structures or components in which the diffusion length or path that electrodes or ions must traverse is minimized and the interfacial area exposed to the ions or electrons is maximized. The device includes components that can be reticulated or has a reticulated interface so that an interface area can be increased. The increased interfacial perimeter increases the available sites for reaction of ionic species. Many different reticulation patterns can be used. The aspect ratio of the reticulated features can be varied. Such bipolar devices can be fabricated by a variety of methods or procedures. A bipolar device having structures of reticulated interface can be tailored for the purposes of controlling and optimizing charge and discharge kinetics. A bipolar device having graded porosity structures can have improved transport properties because the diffusion controlling reaction kinetics can be modified. Graded porosity electrodes can be linearly or nonlinearly graded. A bipolar device having perforated structures also provides improved transport properties by removing tortuosity and reducing diffusion distance. | 03-17-2011 |
20110070488 | HIGH PERFORMANCE ELECTRODES - Techniques, arrangements and compositions are provided to incorporate nanostructured materials into electrodes for energy storage devices. Materials such as, for example, carbon nanotubes, silicon nanowires, silicon carbide nanowires, zinc nanowires, and other materials may be used to modify electrode properties such as electronic conductivity, thermal conductivity, or durability, for example. In some embodiments, nanostructured materials may be added to electrode formulations such as, for example, slurries or powders. Nanostructured materials may be deposited directly onto active material particles or electrode components. In some embodiments, coatings may be used to assist in deposition. | 03-24-2011 |
20110070489 | RETICULATED AND CONTROLLED POROSITY BATTERY STRUCTURES - The effective ionic conductivity in a composite structure is believed to decrease rapidly with volume fraction. A system, such as a bipolar device or energy storage device, has structures or components in which the diffusion length or path that electrodes or ions must traverse is minimized and the interfacial area exposed to the ions or electrons is maximized. The device includes components that can be reticulated or has a reticulated interface so that an interface area can be increased. The increased interfacial perimeter increases the available sites for reaction of ionic species. Many different reticulation patterns can be used. The aspect ratio of the reticulated features can be varied. Such bipolar devices can be fabricated by a variety of methods or procedures. A bipolar device having structures of reticulated interface can be tailored for the purposes of controlling and optimizing charge and discharge kinetics. A bipolar device having graded porosity structures can have improved transport properties because the diffusion controlling reaction kinetics can be modified. Graded porosity electrodes can be linearly or nonlinearly graded. A bipolar device having perforated structures also provides improved transport properties by removing tortuosity and reducing diffusion distance. | 03-24-2011 |
20110111291 | SEMICONDUCTOR-COVERED CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY USING THE SAME - A main object of the invention is to provide a cathode active material used to form a lithium secondary battery having the improved cycle characteristics and output. The invention attains the object by providing a semiconductor-covered cathode active material comprising: a cathode active material; and a pn junction semiconductor covering layer which comprises an n-type semiconductor covering layer that covers a surface of the cathode active material and a p-type semiconductor covering layer that covers the surface of the n-type semiconductor covering layer. | 05-12-2011 |
20110111292 | ELECTRODE COMPOSITION FOR INKJET PRINTING, AND ELECTRODE AND SECONDARY BATTERY PREPARED USING THE ELECTRODE COMPOSITION - An electrode composition for inkjet printing includes an electrode active material, a binder resin, and a solvent. An electrode and a secondary battery prepared by using the electrode use the printed electrode composition. A precise electrode pattern is formed by using an inkjet printing method since spreadability of the electrode composition is excellent. The secondary battery is a micro-thin type having increased electrode capacity and increased cycle lifespan which is prepared since coherence between the electrode composition and a current collector is excellent. | 05-12-2011 |
20110111293 | METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR LITHIUM ION BATTERY AND LITHIUM ION BATTERY - A method for producing a negative electrode for a lithium ion battery includes the steps of: (1) preparing a negative electrode plate and a negative electrode lead, the negative electrode plate comprising a current collector and a thin-film negative electrode active material layer including an alloyable active material; (2) clamping the negative electrode plate and the negative electrode lead between a pair of welding jigs comprising a first plate and a second plate, in such a manner that a surface of the thin-film negative electrode active material layer and a surface of the negative electrode lead overlap and that a welding region including a welding end face is exposed; and (3) generating an arc discharge toward the welding region to melt the welding region. The welding jigs have, along the welding region, a shape which restricts expansion of the volume of the welding region due to the arc discharge. | 05-12-2011 |
20110123860 | ENCLOSING MANUFACTURE WITH A MAGNESIUM SACRIFICIAL ANODE FOR CORROSION PROTECTION - Techniques generally describe articles of enclosing manufacture and methods related to containers including a magnesium sacrificial anode for corrosion protection. Example articles of enclosing manufacture may include a liner or a rod that is configured as a sacrificial anode to protect a metallic side or end wall of the enclosing manufacture from corrosion. Other embodiments may be disclosed and claimed. | 05-26-2011 |
20110123861 | HIGH PERFORMANCE CURRENT COLLECTOR - A current collector is provided. The current collector includes a current-conductive element; and a carbonaceous mixture thin film formed on the current-conductive element. | 05-26-2011 |
20110123862 | THIN FILM BATTERY HAVING IMPROVED EFFICIENCY OF COLLECTING ELECTRIC CURRENT - Provided is a thin film battery, including: a base substrate; a cathode current collector pattern and an anode current collector pattern being formed on the base substrate to be electrically separated from each other; a cathode pattern being formed on the cathode current collector pattern; an electrolyte pattern being formed on the cathode pattern; and an anode pattern being formed on the electrolyte pattern. At least one pattern of the cathode current collector pattern and the anode current collector pattern may include a non-noble metal based alloy. | 05-26-2011 |
20110129729 | ELECTRODE ACTIVE MATERIAL HAVING CORE-SHELL STRUCTURE - Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction. Accordingly, it is possible to achieve a high capacity battery. The electrode active material having a core-shell structure, specially a metal (loid) based electrode active material having a core-shell structure can have a slightly higher electric capacity, compared to a conventional electrode active material, specially a conventional metal (loid) based electrode active material, and can minimize gas generation during charge/discharge. | 06-02-2011 |
20110136007 | Submicron-scale and lower-micron graphitic fibrils as an anode active material for a lithium ion battery - The present invention provides a lithium ion battery anode material comprising a submicron-scaled graphitic fibril having a diameter or thickness less than 1 μm but greater than 100 nm, wherein the fibril is obtained by splitting a micron-scaled carbon fiber or graphite fiber along the fiber axis direction. This type of graphitic fibril exhibits exceptionally high electrical conductivity, thermal conductivity, elastic modulus, and strength. The anode material exhibits a high reversible capacity and good charge/discharge cycling stability for both low and high charge rate conditions. Another preferred embodiment of the present invention is an anode active material containing a graphitic fibril with a diameter greater than 1 μm but less than 6 μm obtained by splitting a carbon fiber or graphite fiber of at least 6 μm in diameter. | 06-09-2011 |
20110151322 | Negative electrode for lithium ion secondary battery and lithium ion secondary battery including the same - A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers. | 06-23-2011 |
20110151323 | SECONDARY BATTERY AND METHOD FOR MANUFACTURING ELECTRODE ASSEMBLY THEREOF - A secondary battery includes at least one positive electrode plate folded on the basis of a first fold line, and at least one negative electrode plate folded on the basis of a second fold line and stacked to face the at least one positive electrode plate with the second fold line coinciding with the first fold line. | 06-23-2011 |
20110159361 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode is an electrode including a current collector | 06-30-2011 |
20110159362 | A POROUS FILM, SECONDARY BATTERY ELECTRODES, AND LITHIUM ION SECONDARY BATTERY - In regards with the porous film provided on the surface of the electrode used for the secondary battery or so, the present invention provides the porous film which can contribute to reduce the adhered material to the roll during the roll winding of the electrode. The secondary battery electrode formed by adhering; the porous film comprising the inorganic filler and the binder, and styrene and the polymer having the glass transition temperature of 15° C. or less as said binder, the porous film slurry comprising the inorganic filler, the polymer having the glass transition temperature of 15° C. or less and the solvent, and the electrode composite layer comprising the binder and the electrode active material, to the current collector, and said porous film is provided on the surface of the electrode composite layer. | 06-30-2011 |
20110165458 | ELECTRICALLY CONDUCTING FIBRES FOR BIOELECTROCHEMICAL SYSTEMS, ELECTRODES MADE WITH SUCH FIBRES, AND SYSTEM INCLUDING ONE OR MORE SUCH ELECTRODES - Electrically conductive fibers made of carbon nanotubes that are assembled and covered by at least one deposit that includes a biopolymer, the manufacturing of these electrodes and the use of these electrodes in bioelectrochemical systems such as, for example, enzymatic or immunological biosensors, DNA, RNA, and biobatteries. | 07-07-2011 |
20110177388 | ANODE COATED WITH LITHIUM FLUORIDE COMPOUNDS, METHOD FOR PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY HAVING THE SAME - An anode for a lithium ion secondary battery includes an anode, and a LiF-based coating layer formed with LiF-based particles on a surface of the anode. The LiF-based coating layer has a thickness of 0.05 to 1 μm. The anode allows the LiF-based coating layer created by side reaction of LiPF6 during a battery charging/discharging process to be relatively uniformly formed on the anode surface, thereby elongating the life cycle of a lithium ion secondary battery. | 07-21-2011 |
20110206985 | LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - Although a larger battery and higher filling of an active material are essential to produce a high capacity battery, a longer time is required for permeation of an electrolytic solution at this case. An electrode membrane formed on the surface of a electrode is configured as an electrode membrane structure combining a mixture layer in which density of an active material is high while the electrolytic solution is difficult to permeate because of small void size and a mixture layer in which an electrolytic solution is easy to permeate while density of an active material is low because of large void size. Permeation time of an electrolytic solution can be reduced in a manner that the mixture layer having large void size acts as a supply path for the electrolytic solution. | 08-25-2011 |
20110262805 | CATHODE OF LITHIUM ION BATTERY AND METHOD FOR FABRICATING THE SAME - A method for making a cathode of lithium ion battery is provided. A paste mixture including active material of lithium ion battery cathode and adhesive is provided first. Then the paste mixture is pressed to get a sheet structure. The sheet structure has a surface. A carbon nanotube layer structure is applied on the surface of the sheet structure to form a precursor. Then the precursor is curled to form a curled precursor, and the curled precursor is pressed and dried. | 10-27-2011 |
20110281158 | CELL ELECTRODE PLATE AND PROCESS FOR PRODUCING THE SAME - A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency. | 11-17-2011 |
20110287314 | Multiply-conductive Matrix for Battery Current Collectors - A multiply-conductive matrix (MCM) for a current collector/electrode and a method of making the MCM are disclosed. The MCM includes a frame, preferably including a lug, the frame preferably made from a reticulated polymer foam substrate, and a body preferably made from the same substrate. The specific surface area of the frame is greater than the specific surface area of the body, resulting in greater rigidity and strength of the frame when the body and frame are joined to form an assembled matrix. Electrically conductive material is applied to the matrix to form the current collector. Optionally, a bonding material is also applied. Electro-active paste is applied to current if collector. The resulting MCM-based electrodes are ultra light and may be used as anode or cathodes in a lead-based battery, lithium ion battery, and nickel metal hydride battery for improved performance. | 11-24-2011 |
20110294005 | POWER STORAGE DEVICE, ELECTRODE, AND ELECTRIC DEVICE - An object is to improve characteristics of a power storage device by devising the shape of an active material layer. The characteristics of the power storage device can be improved by providing a power storage device including a first electrode, a second electrode, and an electrolyte provided between the first electrode and the second electrode. The second electrode includes an active material layer. The active material layer includes a plurality of projecting portions containing an active material and a plurality of particles containing an active material, which are arranged over the plurality of projecting portions or in a space between the plurality of projecting portions. | 12-01-2011 |
20110294006 | ELECTRODE MATERIALS - A process for forming a surface-treatment layer on an electroactive material includes heating the electroactive material and exposing the electroactive material to a reducing gas to form a surface-treatment layer on the electroactive material, where the surface-treatment layer is a layer of partial reduction of the electroactive material. | 12-01-2011 |
20110300440 | BATTERY, VEHICLE, ELECTRONIC DEVICE AND BATTERY MANUFACTURING METHOD - A negative-electrode active material layer formed between a negative-electrode current collector and a solid electrolyte layer has a line-and-space structure in which a plurality of stripe-shaped pattern elements extending in a Y direction are arranged while being separated from each other. A gradient at each contact point where the stripe-shaped pattern element, the negative-electrode current collector and the solid electrolyte layer are in contact with each other is made smaller than 90°. | 12-08-2011 |
20120009469 | ACTIVE METAL / AQUEOUS ELECTROCHEMICAL CELLS AND SYSTEMS - Alkali (or other active) metal battery and other electrochemical cells incorporating active metal anodes together with aqueous cathode/electrolyte systems. The battery cells have a highly ionically conductive protective membrane adjacent to the alkali metal anode that effectively isolates (de-couples) the alkali metal electrode from solvent, electrolyte processing and/or cathode environments, and at the same time allows ion transport in and out of these environments. Isolation of the anode from other components of a battery cell or other electrochemical cell in this way allows the use of virtually any solvent, electrolyte and/or cathode material in conjunction with the anode. Also, optimization of electrolytes or cathode-side solvent systems may be done without impacting anode stability or performance. In particular, Li/water, Li/air and Li/metal hydride cells, components, configurations and fabrication techniques are provided. | 01-12-2012 |
20120015244 | ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY USING THE SAME - An electrode assembly comprises a first electrode including a first electrode current collector and a first electrode active material layer, a second electrode including a second electrode current collector and a second electrode active material layer, a separator disposed between the first electrode and the second electrode, and an electrode absorbing member in contact with the first electrode. | 01-19-2012 |
20120028113 | ELECTRODE COMPOSITE MATERIAL, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - An anode composite material includes an anode active material particle having a surface and a continuous aluminum phosphate layer. The continuous aluminum phosphate layer is coated on the surface of the anode active material particle. The present disclosure also relates to a lithium ion battery that includes the cathode composite material. | 02-02-2012 |
20120034520 | SELF-SEALED METAL ELECTRODE FOR RECHARGEABLE OXIDE-ION BATTERY CELLS - The outer surface of a metal electrode | 02-09-2012 |
20120040241 | COPPER FOIL FOR CURRENT COLLECTOR OF LITHIUM SECONDARY BATTERY - A copper foil for a current collector of a lithium secondary battery is configured such that a nodule cluster having an inter-nodule aspect ratio of 0.001 to 2 is provided at a matte side formed on one surface of the copper foil, in aspect of a crystal structure, a ratio of a texture coefficient of a (200) surface to a sum of texture coefficients of a (111) surface and the (200) surface is 30 to 80%, the copper foil has a water contact angle of 90° or below, and impurity spots existing at the surface of the copper foil have a maximum diameter of 100 μm or less, and a minimal spacing distance between the impurity spots is 1 cm or more. | 02-16-2012 |
20120045689 | BATTERY ELECTRODE SHEET AND MANUFACTURING METHOD THEREFOR - Embodiments of the present invention provide such things as an electrode sheet having little curl for a spiral wound battery and a manufacturing method therefor. | 02-23-2012 |
20120064398 | POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed is rechargeable lithium battery that includes a positive electrode including a positive active material layer, a negative electrode including a negative active material and an electrolyte wherein the positive active material layer includes a positive active material, a binder, a conductive material, and an activated carbon, the activated carbon includes micropores in which manganese ions are adsorbed and trapped, and the activated carbon is included in an amount of about 0.1 wt % to about 3 wt % based on the total weight of the positive active material layer. | 03-15-2012 |
20120064399 | LITHIUM BATTERIES UTILIZING NANOPOROUS SEPARATOR LAYERS - Provided are lithium batteries comprising (a) a separator/electrode assembly of a current collector layer interposed between two electrode layers of one polarity bonded to a porous separator layer on each electrode surface, wherein each electrode layer is coated directly on a separator layer, (b) an electrode of the opposite polarity with a current collector layer interposed between two electrode layers of the opposite polarity, and (c) an electrolyte, where the batteries comprise alternating layers of the separator/electrode assembly and the electrode of the opposite polarity. Preferably, a portion of the assembly is not in contact with the electrode of the opposite polarity and a portion of the electrode of opposite polarity is not in contact with the assembly, and an electrically conductive device independently connects the portions of each polarity for effective current collection. Also provided are methods of preparing such lithium batteries. | 03-15-2012 |
20120064400 | Negative-Electrode Material And Lithium Secondary Battery Using Same - An embodiment of the present application aims at providing a material which repeatedly undergoes a conversion reaction and an alloying reaction to have an improved coulombic efficiency in a first cycle of the repeating, and thereby allowing the material to serve as a high-electrical capacity negative electrode of a lithium secondary battery. In order to attain the object, a negative-electrode material is made by mixed dispersion of (i) nanoparticles of an electrical conducting material having electronic conduction and (ii) nanoparticles of an electrode active material which is reducible to a simple substance which undergoes an alloying reaction with lithium. The electrical conducting material is a sulfide having electronic conduction, and the electrode active material is a sulfide of an element which undergoes the alloying reaction with lithium. Further, the element which undergoes the alloying reaction with lithium is silicon. | 03-15-2012 |
20120064401 | TITANIUM SYSTEM COMPOSITE AND THE PREPARING METHOD OF THE SAME - The present disclosure discloses a titanium system composite comprising a lithium titanium composite oxide and a lithium compound cladding the lithium titanium composite oxide. The present disclosure further discloses a preparation method of the titanium system composite and an electrode material for batteries or capacitors comprising a titanium system composite. | 03-15-2012 |
20120077082 | Lithium Battery Electrodes with Ultra-thin Alumina Coatings - Electrodes for lithium batteries are coated via an atomic layer deposition process. The coatings can be applied to the assembled electrodes, or in some cases to particles of electrode material prior to assembling the particles into an electrode. The coatings can be as thin as 2 Ångstroms thick. The coating provides for a stable electrode. Batteries containing the electrodes tend to exhibit high cycling capacities. | 03-29-2012 |
20120107682 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The present invention relates a nonaqueous electrolyte secondary battery with a porous layer containing inorganic particles formed on a surface of a positive electrode and provides a nonaqueous electrolyte secondary battery capable of reducing the incipient failure and having an excellent shelf life characteristic. The nonaqueous electrolyte secondary battery includes: a positive electrode containing a positive-electrode active material; a negative electrode containing a negative-electrode active material; a nonaqueous electrolyte; and a porous layer provided on a surface of the positive electrode, wherein the porous layer contains silica particles and an aqueous binder. | 05-03-2012 |
20120115026 | NEGATIVE ELECTRODE STRUCTURE FOR NON-AQUEOUS LITHIUM SECONDARY BATTERY - The present invention relates to a negative electrode structure for use in a non-aqueous electrolyte secondary battery and a method of making such negative electrode structure. The negative electrode structure comprises: a monolithic anode comprising a semiconductor material, and a uniform ion transport structure disposed at the monolithic anode surface for contacting a non-aqueous electrolyte, wherein the uniform ion transport structure serves as a current collector and the negative electrode structure does not contain another current collector. The present invention also relates to a battery comprising the negative electrode structure of the present invention, a cathode, and a non-aqueous electrolyte. | 05-10-2012 |
20120115027 | BATTERY ELECTRODE PRODUCTION METHOD - According to the present invention, provided is a method for producing a battery electrode employing a configuration in which a compound material layer containing an active material | 05-10-2012 |
20120115028 | ALL-SOLID BATTERY - An all-solid battery is formed so that an electrode active material layer of at least one of positive and negative electrodes has a composition distribution such that a local volume ratio, expressed by a ratio of a volume of an electrode active material contained in a part of the electrode active material layer with respect to a volume of a solid electrolyte material contained in the part of the electrode active material layer, increases as the part of the electrode active material layer approaches from an interface of the solid electrolyte layer toward an interface of a current collector in a thickness direction of the electrode active material layer, and a voidage of the electrode active material layer increases as the part of the electrode active material layer approaches from the interface of the solid electrolyte layer toward the interface of the current collector in the thickness direction. | 05-10-2012 |
20120121978 | LITHIUM SECONDARY BATTERY CATHODE - An object of the present invention is to provide a lithium secondary battery cathode which can more improve characteristics of the battery. The cathode of the present invention includes a first layer composed of a plate-like cathode active material and a second layer containing particles of the cathode active material and a binder, the second layer being joined to the first layer in a stacked state. | 05-17-2012 |
20120121979 | LITHIUM SECONDARY BATTERY CATHODE - An object of the present invention is to provide a lithium secondary battery cathode which can more improve characteristics of the battery. The cathode of the present invention includes an electroconductive cathode current collector, a plurality of plate-like particle formed of a cathode active material, and a binder containing microparticles formed of the cathode active material and being smaller than the plate-like particles. The plate-like particles are formed so as to have an aspect ratio of 4 to 50. The plate-like particles are arranged such that the particles cover the surface of the cathode current collector surface at a percent area of 85 to 98%. The binder is disposed so as to intervene between two adjacent plate-like particles. | 05-17-2012 |
20120135302 | SEMICONDUCTOR FILM, METHOD FOR MANUFACTURING THE SAME, AND POWER STORAGE DEVICE - Provided are a semiconductor film including silicon microstructures formed at high density, and a manufacturing method thereof. Further, provided are a semiconductor film including silicon microstructures whose density is controlled, and a manufacturing method thereof Furthermore, a power storage device with improved charge-discharge capacity is provided. A manufacturing method in which a semiconductor film with a silicon layer including silicon structures is formed over a substrate with a metal surface is used. The thickness of a silicide layer formed by reaction between the metal and the silicon is controlled, so that the grain sizes of silicide grains formed at an interface between the silicide layer and the silicon layer are controlled and the shapes of the silicon structures are controlled. Such a semiconductor film can be applied to an electrode of a power storage device. | 05-31-2012 |
20120148915 | POSITIVE ELECTRODE AND BATTERY USING THE SAME - A positive electrode is provided in the present invention. The positive electrode includes a first element having a top surface, and an opposite, a bottom surface, comprising a conductive polymeric material and a second element is deposited on the top surface of the first element. The second element includes a composite material. A battery with the positive electrode is also provided according to one embodiment of the present invention. | 06-14-2012 |
20120156558 | ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY - An electrode for a lithium ion secondary battery of the present invention includes an electrode material mixture layer containing oxide particles, active material particles capable of absorbing and desorbing Li, and a resin binder, wherein the oxide particles have an average particle size of primary particles of 1 to 20 nm, and have no peak or have a width at half height of the highest intensity peak of 1.0° or more within the range of 2θ=20 to 70° in a powder X-ray diffraction spectrum, and the ratio of the oxide particles is 0.1 to 10 mass % when the total of the active material particles and the oxide particles is taken as 100 mass %. Further, a lithium ion secondary battery of the present invention includes the above-described electrode for a lithium ion secondary battery of the present invention. | 06-21-2012 |
20120171566 | ELECTRODE FOR LITHIUM ION BATTERY AND METHOD FOR PRODUCING SAME - There is disclosed an electrode for a lithium-ion battery containing (a) a fine fibrous carbon having a diameter of less than 100 nm and (b) a fibrous carbon having a diameter of 100 nm or more and/or (c) a non-fibrous conductive carbon as an electrical conducting material. This electrode for a lithium-ion battery has a small electrode surface resistance, an improved discharge capacity and excellent cycle properties. | 07-05-2012 |
20120177989 | NEGATIVE ACTIVE MATERIAL COMPOSITION, METHOD OF PREPARING NEGATIVE ELECTRODE PLATE BY USING NEGATIVE ACTIVE MATERIAL COMPOSITION, AND LITHIUM SECONDARY BATTERY MANUFACTURED BY USING THE NEGATIVE ACTIVE MATERIAL COMPOSITION - A negative active material composition includes a negative active material, a binder, and a solvent, in which the solvent includes an aqueous solvent and an organic solvent. A method of preparing a negative electrode plate uses the negative active material composition. A lithium battery is manufactured using the negative active material composition, and has good lifetime characteristics due to the formation of pores in the electrode plate. | 07-12-2012 |
20120196180 | ELECTRODE FOR ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE DEVICE - An electrode is used for an electric storage device that includes plural electrodes that are stacked such that an ion-conductive layer is disposed between each pair of the electrodes. Each of the plural electrodes includes a current collector, and an electrode layer, formed on the current collector, which contains an active material. The configuration of the electrode layer (for example, the amount of the active material) varies according to the position in the electrode layer such that a current density in a first region of the electrode, where heat radiation performance is lower than the heat radiation performance in a second region of the electrode, is lower than the current density in the second region of the electrode. | 08-02-2012 |
20120208081 | COATING METHOD FOR PRODUCING ELECTRODES FOR ELECTRICAL ENERGY STORES - The present invention relates to a method for coating a carrier during the production of an electrode for electrical energy stores, in particular for lithium ion cells, using a specific solvent and/or dispersant, characterized in that the solvent and/or dispersant is or comprises N-ethylpyrrolidone. | 08-16-2012 |
20120258358 | CATHODE ACTIVE MATERIAL FOR A LITHIUM ION SECONDARY BATTERY AND A LITHIUM ION SECONDARY BATTERY - [Summary] Provided is a cathode active material for a lithium secondary battery having a layered rock salt structure, including a secondary grain formed of a large number of primary grains each having an average grain size of 0.01 μm or more and 5 μm or less, in which the secondary grain has the following characteristics: a (003) plane orientation degree of 60% or more; an average grain size of 1 μm or more and 100 μm or less; an aspect ratio of 1.0 or more and less than 2; a voidage of 3% or more and 30% or less; an average pore size of 0.1 μm or more and 5 μm or less; and a value obtained by dividing the average grain size of each of the primary grains by the average pore size of 0.1 or more and 5 or less. | 10-11-2012 |
20120264012 | ELECTRODE AND A PRODUCTION METHOD THEREFOR - Disclosed is an electrode. The electrode comprises an active material in the form of a powder, and an electrically conductive material based on a shape-memory alloy. Consequently, damage to the electrode can be minimised and electrode life is improved. | 10-18-2012 |
20120308884 | SINGLE-LAYER AND MULTILAYER GRAPHENE, METHOD OF MANUFACTURING THE SAME, OBJECT INCLUDING THE SAME, AND ELECTRIC DEVICE INCLUDING THE SAME - Graphene is formed with a practically uniform thickness on an uneven object. The object is immersed in a graphene oxide solution, and then taken out of the solution and dried; alternatively, the object and an electrode are immersed therein and voltage is applied between the electrode and the object used as an anode. Graphene oxide is negatively charged, and thus is drawn to and deposited on a surface of the object, with a practically uniform thickness. After that, the object is heated in vacuum or a reducing atmosphere, so that the graphene oxide is reduced to be graphene. In this manner, a graphene layer with a practically uniform thickness can be formed even on a surface of the uneven object. | 12-06-2012 |
20120315537 | COMPOSITE CURRENT COLLECTOR, METHODS OF MANUFACTURE THEREOF, AND ARTICLES INCLUDING THE SAME - A current collector including: a polymer film including a first major surface, an opposite second major surface, and a plurality of openings extending through a thickness of the polymer film; a first layer on the first major surface of the polymer film; a second layer on the second major surface of the polymer film; and a third layer on an inner surface of an opening of the plurality of openings, wherein the third layer contacts the first layer and the second layer, and wherein the first layer, the second layer, and the third layer each independently has an electrical conductivity of greater than 10 Siemens per meter. | 12-13-2012 |
20120315538 | CONTROLLED POROSITY IN ELECTRODES - Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm | 12-13-2012 |
20130011729 | MULTIPLE INORGANIC COMPOUND STRUCTURE AND USE THEREOF, AND METHOD OF PRODUCING MULTIPLE INORGANIC COMPOUND STRUCTURE - In a multiple inorganic compound structure according to the present invention, elements included in a main crystalline phase and elements included in a sub inorganic compound are present in at least a first region and a second region, the first region and the second region each have an area of nano square meter order, the first region is adjacent to the second region, and the first region and the second region each include an element of an identical kind, which element of the identical kind present in the first region has a concentration different from that of the element of the identical kind present in the second region. | 01-10-2013 |
20130040193 | COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL, ALL SOLID-STATE BATTERY, AND METHODS FOR MANUFACTURE THEREOF - A composite positive electrode active material includes: a positive electrode active material which includes a transition metal; and a reaction suppressor which is formed so as to cover a surface of the positive electrode active material, and which is made of a polyanion structure-containing compound having a cation moiety composed of a metal atom that becomes a conducting ion and having a polyanion structural moiety composed of a center atom that is covalently bonded to a plurality of oxygen atoms. A transition metal-reducing layer which has self-assembled on the surface of the positive electrode active material in contact with the reaction suppressor owing to reaction of the transition metal with the polyanion structure-containing compound, has a thickness of 10 nm or less. | 02-14-2013 |
20130045416 | GOLD MICRO- AND NANOTUBES, THEIR SYNTHESIS AND USE - Synthesis of gold microtubes and nanotubes suspendable in solution is presented. The synthesis is accomplished using an AAO template route, wherein a polymer tube is used as a sacrificial core. The synthesis produces hollow structures that consist of only gold. These nanostructures exhibit two SPR modes, which correspond to both the transverse and longitudinal modes. The mode assignment was confirmed by measuring SPR behavior as both aligned arrays and in solution. The performance of gold nanotubes as refractive index detectors was quantified and determined to be more sensitive than analogous solid nanorods prepared under identical conditions, and are among the most sensitive nanostructured plasmon sensors to date. Due to their intense and sensitive resonances in the NIR spectrum, these solution-suspendable nanoparticles have potential to be used as in vitro or in vivo sensors. | 02-21-2013 |
20130078510 | CORE-SHELL NANOPARTICLES IN ELECTRONIC BATTERY APPLICATIONS - The present invention provides an improved supercapacitor-like electronic battery comprising a conventional electrochemical capacitor structure. A first nanocomposite electrode and a second electrode and an electrolyte are positioned within the conventional electrochemical capacitor structure. The electrolyte separates the nanocomposite electrode and the second electrode. The first nanocomposite electrode has first conductive core-shell nanoparticles in a first electrolyte matrix. A first current collector is in communication with the nanocomposite electrode and a second current collector is in communication with the second electrode. Also provided is an electrostatic capacitor-like electronic battery comprising a high dielectric-strength matrix separating a first electrode from a second electrode and, dispersed in said high-dielectric strength matrix, a plurality of core-shell nanoparticles, each of said core-shell nanoparticles having a conductive core and an insulating shell. | 03-28-2013 |
20130095381 | MICROBATTERY AND METHOD FOR MANUFACTURING A MICROBATTERY - A microbattery that includes, in succession starting from a first substrate: a first current collector, a first electrode, an electrolyte, a second electrode consisting of a solder joint, a second current collector and a second substrate. Additionally, a method for manufacturing a microbattery, which includes the following steps: forming a thin-film multilayer including, in succession from the first substrate, a first current collector, a first electrode, an electrolyte and a first metal film; forming a second current collector on a face of a second substrate; and forming a second electrode by soldering the first metal film and the second current collector together, said substrates being placed facing each other during assembly. | 04-18-2013 |
20130143114 | NANO CATHODE MATERIAL USABLE FOR BATTERIES AND METHOD OF MAKING SAME - A nano cathode material usable for batteries and a method for preparing the same are provided. The cathode material is comprised of nano particles so that the specific surface area of such particles is increased, thereby allowing a suitable size distribution of the particles, improving the conductivity of the cathode material, and maintaining the capacity characteristics of the cathode material for batteries. | 06-06-2013 |
20130143115 | THREE-DIMENSIONAL NANOSIZED POROUS METAL OXIDE ELECTRODE MATERIAL OF LITHIUM ION BATTERY AND PREPARATION METHOD THEREOF - A preparation method of a three-dimensional nanosized porous metal oxide electrode material of lithium ion battery, which soaks a dried polymer colloidal crystal microsphere template in a metal salt solution as a precursor solution for a period of time, and obtains a precursor template complex after filtration and drying; heats the precursor template complex to a certain temperature at a low heating rate and keeps the temperature, and then obtains the three-dimensional nanosized porous metal oxide electrode material of lithium ion battery after cooling to room temperature. A metal oxide electrode material is manufactured, with the three-dimensional nanosized porous metal oxide electrode material thereby improving the ionic conductivity of the negative electrode material of lithium ion battery, and shortens the diffusion path of the lithium ions during an electrochemical reaction process, and improves the rate discharge performance of lithium ion battery greatly. | 06-06-2013 |
20130202959 | ELECTROPHORETIC ASSEMBLY OF ELECTROCHEMICAL DEVICES - Methods are provided for making bipolar electrochemical devices, such as batteries, using electrophoresis. A bipolar device is assembled by applying a field that creates a physical separation between two active electrode materials, without requiring insertion of a discrete separator film or electrolyte layer. | 08-08-2013 |
20130202960 | BATTERY HAVING AN ELECTRODE STRUCTURE COMPRISING LONG METAL FIBERS AND A PRODUCTION METHOD THEREFOR - The present invention relates to a battery having an electrode structure using long metal fibers, and to a production method therefor. According to one embodiment of the present invention, the battery has an electrode structure comprising: an electrically-conductive network which is formed by physical connection or chemical bonding between one or more long metal fibers; and a first electrically active material which is bound to the electrically-conductive network. | 08-08-2013 |
20130209872 | SECONDARY BATTERY POROUS ELECTRODE - An electrode having excellent charge/discharge cycle characteristics and which is capable of improving a secondary battery capacity. An electrode is formed on the surface of a collector as an assembly of multiple porous domain structures that are apart from each other, the porous domain structures each having a polygonal shape without an acute angle in a planar view, the polygonal shape having a maximum diameter of 120 μm or less. | 08-15-2013 |
20130209873 | METHOD OF MANUFACTURING LAYERED STRUCTURE CONSTITUTING ALL-SOLID-STATE BATTERY, APPARATUS FOR MANUFACTURING THE SAME, AND ALL-SOLID-STATE BATTERY PROVIDED WITH LAYERED STRUCTURE - The present invention provides a method of manufacturing a layered structure and an apparatus for manufacturing a layered structure where the layered structure comprises a solid electrolyte layer, a positive electrode active material layer, and a negative electrode active material layer, which together constitute an all-solid-state battery, enables the interfacial resistance to be lowered, enables the interfacial strength to be increased, enables an improved yield rate, and enables a low manufacturing cost. | 08-15-2013 |
20130252086 | BATTERY ELECTRODE AND METHOD FOR PRODUCING SAME - In order to allow for maximum freedom of design in the selection of an electrode or battery shape, a compact configuration and low production costs, the invention specifies a battery electrode and a method for producing same, wherein a collector substrate is coated with a coating film and at least one arrester region is produced thereon by removing the coating film by means of laser ablation. | 09-26-2013 |
20130266855 | METHOD OF FABRICATING CATHODE FOR LITHIUM ION SECONDARY BATTERY BY RECYCLING CATHODE ACTIVE MATERIAL AND LITHIUM ION SECONDARY BATTERY FABRICATED THEREBY - The present invention relates to a method for fabricating a cathode for a lithium ion secondary battery by recycling an active material, and a lithium ion secondary battery including a cathode fabricated thereby. The method according to the present invention includes: carbonizing a binder existing in a cathode scrap of a lithium ion secondary battery by heat treating the cathode scrap of the lithium ion secondary battery; collecting a cathode active material from the cathode scrap of the lithium ion secondary battery; and forming a cathode for a lithium ion secondary battery without adding a conductive material to the collected cathode active material. According to the present invention, a lithium ion secondary battery which is environmentally friendly, economical, and capable of reducing manufacturing cost can be implemented. | 10-10-2013 |
20130295451 | SOLID-STATE BATTERY ELECTRODE - The invention provides a solid-state battery electrode formed of a lithium ion conductor, an active material, and a solid electrolyte and including a granule that contains a plurality of lithium ion conductors and a plurality of active materials, as well as a method of producing a solid-state battery electrode that has a step of preparing a granule that contains a plurality of lithium ion conductors and a plurality of active materials and a step of uniformly mixing the granule with a solid electrolyte. | 11-07-2013 |
20130302669 | METHOD OF ENHANCING THE CONNECTIVITY OF A COLLOIDAL TEMPLATE, AND A HIGHLY INTERCONNECTED POROUS STRUCTURE - A method of enhancing the connectivity of a colloidal template includes providing a lattice of microparticles, where the microparticles are in contact with adjacent microparticles at contact regions therebetween, and exposing the lattice to a solution comprising a solvent and a precursor material. The solvent is removed from the solution, and the precursor material moves to the contact regions. A ring is formed from the precursor material around each of the contact regions, thereby creating interconnects between adjacent microparticles and enhancing the connectivity of the lattice. | 11-14-2013 |
20130323583 | PROCESSES FOR THE MANUFACTURE OF CONDUCTIVE PARTICLE FILMS FOR LITHIUM ION BATTERIES - The invention is directed to a process for forming a particle film on a substrate. Preferably, a series of corona guns, staggered to optimize film thickness uniformity, are oriented on both sides of a slowly translating grounded substrate (copper or aluminum for the anode or cathode, respectively). The substrate is preferably slightly heated to induce binder flow, and passed through a set of hot rollers that further induce melting and improve film uniformity. The sheeting is collected on a roll or can be combined in-situ and rolled into a single-cell battery. The invention is also directed to products formed by the processes of the invention and, in particular, batteries. | 12-05-2013 |
20130323584 | METHOD FOR PRODUCING AN ELECTRODE/SEPARATOR STACK INCLUDING FILLING WITH AN ELECTROLYTE FOR USE IN AN ELECTROCHEMICAL ENERGY STORAGE CELL - A method for producing an electrochemical energy storage cell, which has a stack | 12-05-2013 |
20130337319 | ELECTROCHEMICAL SLURRY COMPOSITIONS AND METHODS FOR PREPARING THE SAME - Embodiments described herein generally relate to semi-solid suspensions, and more particularly to systems and methods for preparing semi-solid suspensions for use as electrodes in electrochemical devices such as, for example batteries. In some embodiments, a method for preparing a semi-solid electrode includes combining a quantity of an active material with a quantity of an electrolyte to form an intermediate material. The intermediate material is then combined with a conductive additive to form an electrode material. The electrode material is mixed to form a suspension having a mixing index of at least about 0.80 and is then formed into a semi-solid electrode. | 12-19-2013 |
20140004414 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME | 01-02-2014 |
20140023919 | NON-AQUEOUS ELECTROLYTE SECONDARY CELL - The present invention aims to provide the following non-aqueous electrolyte secondary cell having excellent safety. A non-aqueous electrolyte secondary cell comprises an electrode assembly having positive and negative electrodes. The positive electrode has a core exposed portion (formed by exposing at least one side edge of a belt-shaped core along the longitudinal direction of the core), a active material layer formed on the core, and a protective layer (formed on the core exposed portion near the active material layer and having a lower conductivity than the core). The negative electrode has first and second negative electrode core exposed portions, in which both side edges of a belt-shaped negative electrode core are exposed along the longitudinal direction of the core, and a negative electrode active material layer formed on the negative electrode core. And the whole of the second negative electrode core exposed portion is opposite to the protective layer. | 01-23-2014 |
20140030589 | Materials Prepared by Metal Extraction - A method for extracting ions from an active material for use in a battery electrode includes mixing the active material and an activating compound to form a mixture. The mixture is annealed such that an amount of ions is extracted from the active material, an amount of oxygen is liberated from the active material, and an activated active material is formed. Embodiments of the invention include the activated active material, the electrode, and the primary and secondary batteries formed from such activated active materials. | 01-30-2014 |
20140050975 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed is a negative active material that includes active material primary particles; a conductive material; and a composite binder. | 02-20-2014 |
20140072867 | METHOD FOR MANUFACTURING AN ELECTRODE - An electrode ( | 03-13-2014 |
20140113188 | Room Temperature Single Phase Li Insertion/Extraction Material for Use in Li-Based Battery - The invention relates to active materials for the manufacture of Li-based batteries. A crystalline nanometric powdered material with formula Li | 04-24-2014 |
20140134483 | ALL-SOLID BATTERY AND MANUFACTURING METHOD THEREFOR - A method for manufacturing an all-solid battery that includes preparing a first green sheet as a green sheet for at least any one of a positive electrode layer and a negative electrode layer and a second green sheet as a green sheet for a solid electrolyte layer, stacking the first green sheet and the second green sheet to form a stacked body, and firing the stacked body with a setter placed in contact with at least one surface of the stacked body. The setter in contact with the at least one surface of the stacked body is 0.11 μmRa or more and 50.13 μmRa or less in surface roughness. | 05-15-2014 |
20140186697 | STRUCTURES FOR INTERDIGITATED FINGER CO-EXTRUSION - An electrode structure has an interdigitated layer of at least a first material and a second material, the second material having either higher or similar electrical conductivity of the first material and being more ionically conductivity than the first material, a cross-section of the two materials being non-rectangular. | 07-03-2014 |
20140186698 | THREE DIMENSIONAL CO-EXTRUDED BATTERY ELECTRODES - A three dimensional electrode structure having a first layer of interdigitated stripes of material oriented in a first direction, and a second layer of interdigitated stripes of material oriented in a second direction residing on the first layer of interdigitated stripes of material. A method of manufacturing a three dimensional electrode structure includes depositing a first layer of interdigitated stripes of an active material and an intermediate material on a substrate in a first direction, and depositing a second layer of interdigitated stripes of the active material and the intermediate material on the first layer in a second direction orthogonal to the first direction. | 07-03-2014 |
20140287303 | ELECTRODE AND METHOD FOR MANUFACTURING AN ELECTRODE - A method for manufacturing an electrode, including: a) providing a dry active material mixture; b) providing a preformed current collector; and c) applying the dry active material mixture onto at least one subregion of the current collector to form an active material layer. A method of this kind offers a particularly cost-effective way of manufacturing an electrode in a particularly defined manner and without unrectifiable rejects. Also described is a related electrode. | 09-25-2014 |
20140287304 | ELECTRODE AND METHOD FOR MAUFACTURING THE SAME - An electrode for an electrochemical energy store, having at least two adjacently situated active material layers, the at least two active material layers having at least one active material and at least one conductive additive, the at least two active material layers furthermore having a gradient with respect to one another in terms of the active material concentration, the at least two active material layers furthermore having a gradient with respect to one another in terms of the conductive additive concentration, and the gradient in terms of the active material concentration and the gradient in terms of the conductive additive concentration being developed to run in opposite directions. An electrode of this kind also allows for a good high-current capability and a good storage capacity. Also described is a method for manufacturing an electrode of this kind. | 09-25-2014 |
20140302388 | Materials Prepared by Metal Extraction - A method for extracting ions from an active material for use in a battery electrode includes mixing the active material and an activating compound to form a mixture. The mixture is annealed such that an amount of ions is extracted from the active material, an amount of oxygen is liberated from the active material, and an activated active material is formed. Embodiments of the invention include the activated active material, the electrode, and the primary and secondary batteries formed from such activated active materials. | 10-09-2014 |
20140302389 | LAMINATED POROUS FILM, METHOD FOR PRODUCING SAME, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY SEPARATOR, LAMINATED ELECTRODE SHEET, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a laminated porous film suitable as a non-aqueous electrolyte secondary battery separator, which includes a heat resistant layer excellent in morphological stability at a high temperature and ion permeability and more resistant to fall-off of a filler. A laminated porous film in which a heat resistant layer including a binder resin and a filler and a base porous film including a polyolefin as a principal component are laminated, wherein the filler included in the heat resistant layer substantially consists of an inorganic filler (a) having a primary particle diameter of 0.2 to 1 μm and an inorganic filler (b) having a primary particle diameter of 0.01 to 0.1 μm, and the particle diameter of secondary aggregates of the inorganic filler (b) is not more than 2 times the primary particle diameter of the inorganic filler (a) in the heat resistant layer. | 10-09-2014 |
20150037669 | METHOD FOR PRODUCING SECONDARY BATTERY - Provided is a method for producing a lithium secondary battery in which localized precipitation of a foreign metal in the negative electrode can be reliably suppressed in a shorter time, regardless of, for instance, electrode type or electrode variability. The production method is a method for producing a secondary battery that includes a positive electrode provided with a positive electrode active material layer, a negative electrode provided with a negative electrode active material layer, and a nonaqueous electrolyte. The method comprises a step of constructing a cell including the positive electrode, the negative electrode and the nonaqueous electrolyte; a micro-charging step of performing charging over one hour or longer, up to 0.01% to 0.5% of the capacity of the constructed cell, in a state of charge such that a positive electrode potential is equal to or higher than an oxidation potential of iron (Fe), and a negative electrode potential is equal to or higher than a reduction potential of iron (Fe), and maintaining the state of charge; and a step of performing an initial conditioning charging. | 02-05-2015 |
20150072230 | LITHIUM-ION CELL AND ENERGY DENSITY THEREOF - A lithium-ion cell can include at least one electrode that includes packed active electrode particles that include a multimodal particle size distribution (PSD) and a packing density, for example, greater than approximately 0.56. Various other apparatuses, systems, methods, etc., are also disclosed. | 03-12-2015 |
20150072231 | SECONDARY BATTERY - Provided is a secondary battery in which a single-layer secondary cell has an all-solid-state secondary cell structure with a storage layer sandwiched between a positive electrode layer and a negative electrode layer and which is superior to a conventional secondary battery with respect to at least one of volume, operation, and positioning. The present invention provides a secondary battery including a folded single-layer secondary cell formed by folding a sheet-shaped single-layer secondary cell, with a storage layer sandwiched between a positive electrode layer and a negative electrode layer, two or more times while alternately reversing the folding direction. | 03-12-2015 |
20150086863 | HIGHLY HEAT-RESISTANT FILM FOR ELECTRODE TERMINALS, METHOD FOR PRODUCING THE HEAT-RESISTANT FILM AND ELECTRODE TERMINAL STRUCTURE INCLUDING THE HEAT-RESISTANT FILM - Disclosed is a highly heat-resistant film for electrode terminals. The heat-resistant film includes a polymer layer as a central substrate to be sealably interposed between a pouch and electrode terminals. The polymer layer is formed of a mixture of at least one polymer selected from the group consisting of an ethylene-norbornene copolymer, polymethylpentene, polyalkylene terephthalate and polyphenylene sulfide with highly heat-resistant polypropylene in a weight ratio of 5:5 to 9:1. The heat-resistant film simultaneously meets requirements in terms of thermal adhesiveness and high temperature dimensional stability, which are contradictory to each other in conventional films for electrode terminals of secondary batteries. In addition, the heat-resistant film has enhanced electrolyte resistance to improve the durability of a secondary battery. Further disclosed are a method for producing the heat-resistant film and an electrode terminal structure including the heat-resistant film. | 03-26-2015 |
20150125743 | BATTERY ELECTRODE MATERIALS - An electrode material for a battery or for a capacitor, supercapacitor or a pseudo capacitor comprises a porous substrate coated with a coating comprising a conducting material and an active material, wherein the thickness of the coating is less than 1 micrometre and the volume fraction of active material is greater than 5%. In another aspect, the electrode material comprises a metallic network structure and an active material connected to the metallic structure, wherein the calculated volume fraction of active material is greater than 5%, and the surface area of the material is greater than 5 m | 05-07-2015 |
20150311497 | METHOD FOR PRODUCING AT LEAST ONE LAYER OF A SOLID -BASED THIN-FILM BATTERY, PLASMA POWDER SPRAYER THEREFOR, AND SOLID-BASED THIN FILM BATTERY - A method for the manufacture of a layer for solid state thin-film batteries using a plasma-powder-sprayer with a plasma generation area and a mixing area spatially separated from it, including creation of a plasma gas stream from an ignition gas stream in the plasma generation area; creation of a powder-aerosol stream from a carrier gas stream from a carrier gas reservoir and powder particles from a powder reservoir, wherein the powder particles are extracted in a particular way; introduction of the powder-aerosol stream and the plasma gas stream into the mixing area, so that a plasma-powder-aerosol is formed; directing a plasma-powder-aerosol stream from the mixing area onto a substrate arranged in a coating area; and, deposition of a layer on a substrate of powder particles that are superficially fused or changed in their crystalline structure in the mixing area and/or in the plasma-powder-aerosol stream and/or in the coating area. | 10-29-2015 |
20150325835 | JET NOZZLE, JET PROCESSING DEVICE, PROCESSING METHOD, METHOD FOR MANUFACTURING CELL COMPONENT, AND SECONDARY CELL - A jet nozzle includes: a jet opening through which a fluid mixture of particles and gas is jetted; a first flow channel extending along a first direction to the jet opening; a flow diverging region located in the first flow channel at opposite the jet opening and comprises a plurality of flow diverging channels arranged in a direction intersecting with the first direction; a second flow channel that makes the particles join in the flow diverging region in a second direction which is at a predetermined angle to the first direction; and a third flow channel through which the gas is jetted to the first flow channel. | 11-12-2015 |
20150357626 | POROUS SEMI-SOLID ELECTRODE AND METHODS OF MANUFACTURING THE SAME - Embodiments described herein relate generally to electrochemical cells having porous semi-solid electrodes and in particular, semi-solid electrodes that include electrolyte filled meso-pores such that the semi-solid electrodes have higher electronic conductivity. In some embodiments, a method of preparing a porous semi-solid electrode includes combining an active material with an electrolyte to form an intermediate material, the electrolyte including a liquid component and a pore former. A conductive material is combined with the intermediate material to form a semi-solid electrode material. The pore former is then caused to liquefy to form a porous semi-solid electrode. In some embodiments, the pore former is maintained at a temperature below a dissolution temperature and/or a melting temperature of the pore former prior to causing the pore former to liquefy. In some embodiments, the pore former can be ethylene carbonate (“EC”). | 12-10-2015 |
20150364753 | CONTROLLED POROSITY IN ELECTRODES - Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm | 12-17-2015 |
20160020467 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A positive electrode for nonaqueous electrolyte secondary batteries having a positive electrode current collector and a positive electrode mixture layer that is formed on the positive electrode current collector. The positive electrode for nonaqueous electrolyte secondary batteries is: the positive electrode mixture layer comprises a first mixture layer that contains a positive electrode active material and a reaction inhibitor which inhibits a thermal reaction between the positive electrode active material and a nonaqueous electrolyte, and a second mixture layer that contains the positive electrode active material; the positive electrode is obtained by sequentially laminating the positive electrode current collector, the first and the second mixture layer in this order; and the concentration of the reaction inhibitor contained in the positive electrode mixture layer is high in the vicinity of the positive electrode current collector in comparison to that in the surface layer portion of the positive electrode mixture layer. | 01-21-2016 |
20160023173 | IMPELLER MIXER OF ELECTRODE SLURRY - An impeller mixer of electrode slurry includes a container ( | 01-28-2016 |
20160049647 | POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL MANUFACTURED BY USING THEREOF, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Positive electrode active materials are provided. The positive electrode active materials includes a primary particle formed of a plurality of metals including a first metal and a secondary particle formed of at least one of the primary particle. The secondary particle includes a core part, a shell part, a seed region where the primary particle having concentration gradient of the first metal is disposed and a maintain region where the primary particle having constant concentration of the first metal is disposed, the seed region adjacent to the core part and a maintain region adjacent to the sell part, and length of the seed region in a direction from the core part to the shell part is 1 μm. | 02-18-2016 |
20160056469 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MANUFACTURING POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A positive electrode for a nonaqueous electrolyte secondary battery, the positive electrode being configured so that even if the potential of the positive electrode is set to a high potential, degradation of cycle characteristics is suppressed. A positive electrode for a nonaqueous electrolyte secondary battery, which has a positive electrode plate in which a positive electrode mixture layer containing a positive electrode active material which occludes and releases Li, a binder, and an electrically conductive agent is formed on a positive electrode collector, and in this positive electrode, a compound containing at least one element selected from W, Al, Mg, Ti, Zr, and a rare earth element is adhered to all the surfaces of at least a part of the positive electrode active material, at least a part of the binder, and at least a part of the electrically conductive agent, each of which is contained in the positive electrode mixture layer. | 02-25-2016 |
20160082467 | COATING FILM PRODUCTION METHOD, COATING FILM PRODUCTION APPARATUS, COATING FILM, NONAQUEOUS SECONDARY BATTERY ELECTRODE PLATE, AND MOBILE BODY - When a coating material is rolled between rolls to generate a a coating film, and the coating film is transferred onto the coating object, at first, a residual coating material layer based on a residual coating material is formed on each of the surfaces of the rolls, and supply of the coating material and transfer of the coating film are carried out in a state where the residual coating material layer is retained on each of the surfaces of the rolls, thereby suppressing abrasions between the rolls and the coating material. | 03-24-2016 |
20160149204 | CATHODIC ELECTRODE OF A LITHIUM-BASED ACCUMULATOR - A cathodic electrode of a lithium-based accumulator includes a basic structure, which is formed from fibers, flakes or grains. For this purpose, the fibers, flakes or grains are interspersed with channels, cavities or open pores. | 05-26-2016 |
20160149208 | ELECTRODE FOR SECONDARY BATTERY - An electrode for secondary batteries, the electrode includes a current collector foil, a first mixture layer, and a second mixture layer. The first mixture layer is a layer of granulated particles accumulated on the current collector foil. The granulated particles contain at least an active material and a binder. The second mixture layer is a layer of a mixture paste applied to a surface of the first mixture layer and then dried. The mixture paste is obtained by kneading at least an active material, a binder, and a solvent. | 05-26-2016 |
20160204434 | MANUFACTURING METHOD OF ELECTRODE AND WET GRANULES | 07-14-2016 |
20160204438 | ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME | 07-14-2016 |
20190148709 | CONTROLLING STRUCTURES OF BATTERY ELECTRODES | 05-16-2019 |
20190148715 | ELECTRODE MATERIAL OF SODIUM-ION BATTERY, METHOD OF MANUFACTURING THE SAME AND ELECTRODE OF SODIUM-ION BATTERY | 05-16-2019 |
20190148717 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME | 05-16-2019 |
20190148720 | POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERIES | 05-16-2019 |
20190148721 | POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE ACTIVE MATERIAL MANUFACTURED BY USING THEREOF, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME | 05-16-2019 |
20190148726 | POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, RECHARGEABLE LITHIUM BATTERY INCLUDING SAME AND BATTERY MODULE | 05-16-2019 |
20190148729 | ELECTRODE FOR SODIUM-ION BATTERY | 05-16-2019 |
20190148737 | STRETCHABLE ELECTRODE, ELECTROCHEMICAL DEVICE INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE STRETCHABLE ELECTRODE | 05-16-2019 |
20190148762 | NON-AQUEOUS ELETROLYTE SECONDARY BATTERY | 05-16-2019 |
20220140310 | METHOD OF PRODUCING NEGATIVE ELECTRODE PLATE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - (A) A first layer is formed by applying a first negative electrode slurry to the surface of a negative electrode substrate. (B) A second layer is formed by applying a second negative electrode slurry to the surface of the first layer. The first negative electrode slurry includes a first negative electrode composite material. The second negative electrode slurry includes a second negative electrode composite material. Each of the first negative electrode composite material and the second negative electrode composite material includes a negative electrode active material and a cellulose-based binder. The negative electrode active material includes a first graphite powder and a second graphite powder. The first negative electrode composite material includes the cellulose-based binder at a first mass fraction. The second negative electrode composite material includes the cellulose-based binder at a second mass fraction. | 05-05-2022 |
20220140326 | Metal Anode, Method for Preparing the Metal Anode, and Secondary Battery - Disclosed is a metal anode, including a metal anode body ( | 05-05-2022 |
20220140340 | Carbon Nanotube, And Electrode And Secondary Battery Including Carbon Nanotube - The present invention relates to a carbon nanotube having an La(100) of less than 7.0 nm when measured by XRD and a specific surface area of 100 m | 05-05-2022 |
20220140342 | Negative Electrode for Secondary Battery, and Secondary Battery Including Same - A negative electrode for a secondary battery includes: a current collector; a first negative electrode active material layer formed on the current collector and containing a first active material; and a second negative electrode active material layer formed on the first negative electrode active material layer and containing a second active material. The second active material is a bimodal active material including small particles and large particles having different particle sizes, a particle size (D2) of the second active material is smaller than a particle size (D1) of the first active material, and the particle size of the second active material is an average particle size of the small particles and the large particles. | 05-05-2022 |
20220140352 | AIR ELECTRODE INCLUDING MULTI-LAYER STRUCTURE WITH EXTENDED THREE-PHASE BOUNDARY AND METHOD FOR MANUFACTURING THE SAME - An air electrode including a multi-layer structure with an extended three-phase boundary for a lithium-air secondary battery composed of a lithium anode, a separator, and the air electrode includes an electrode current collector having a shape of a metal foam, and conductor layers disposed on top of and beneath the electrode current collector to form a multi-layer structure together with the electrode current collector. | 05-05-2022 |
20220140402 | ALL-SOLID-STATE BATTERY - This all-solid-state battery includes a laminate in which a positive electrode layer and a negative electrode layer are alternately laminated with a solid electrolyte layer interposed therebetween. The positive electrode layer includes a first positive electrode end portion exposed on a first side surface of the laminate. The negative electrode layer includes a second negative electrode end portion not exposed on the first side surface of the laminate. The all-solid-state battery includes a first uneven part formed on the first side surface of the laminate. | 05-05-2022 |
20220140406 | SOLID-STATE SODIUM-CARBON DIOXIDE BATTERY - A solid-state sodium-carbon dioxide battery is provided. The solid-state sodium-carbon dioxide battery comprises a positive electrode, a negative electrode, and an inorganic solid-state electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode can catalyze the reaction of sodium ions and carbon dioxide, the negative electrode comprises sodium. | 05-05-2022 |