Entries |
Document | Title | Date |
20080206641 | ELECTRODE COMPOSITIONS AND ELECTRODES MADE THEREFROM - A composite includes an active material, graphite, and a binder. The amount of graphite in the composite is greater than about 20 volume percent of the total volume of the active material and graphite in the composite. The porosity of the composite is less than about 20%. | 08-28-2008 |
20080220331 | Nonaqueous electrolyte secondary battery and method of producing the same - To obtain a nonaqueous electrolyte secondary battery which has a high capacity and excellent storage characteristics at elevated temperatures. A nonaqueous electrolyte secondary battery having a positive electrode including a positive active material having a layered structure, a negative electrode including a negative active material, and a nonaqueous electrolyte including a lithium electrolyte salt and a solvent, wherein carbon dioxide is dissolved in the nonaqueous electrolyte, and the concentration of the lithium electrolyte salt in the nonaqueous electrolyte is 1.0 mol/liter or more, and the battery is charged in such a way that an end-of-charge potential of the positive electrode becomes 4.40 V (vs. Li/Li | 09-11-2008 |
20080241687 | NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND VEHICLE - A nonaqueous electrolyte battery includes a positive electrode and a negative electrode. The negative electrode includes a negative electrode current collector, a negative electrode layer and a top part. The positive electrode includes an end portion as viewed in a length direction of the positive electrode. The top part is gradually decreased in width towards an apex of the top part on one end of the current collector as viewed in a length direction of the current collector. The apex is arranged at a position corresponding to one-half of a maximum width of the negative electrode layer. The top part has a shape symmetric with respect to the position, and is arranged between the end portion of the positive electrode and a positive electrode portion outward of the end portion of the positive electrode. The end portion is arranged at a position preceding the top part. | 10-02-2008 |
20080248388 | ELECTRODE FOR ELECTROCHEMICAL ELEMENT AND ELECTROCHEMICAL ELEMENT USING THE SAME - The invention presents an electrode for an electrochemical element for inserting and extracting a lithium ion reversibly, comprising a current collector forming a concave portion and a convex portion at least on one side, and a columnar body including an active material formed on the convex portion of the current collector, in which the columnar body covers at least a part of respective sides of the convex portion. By this configuration, an electrode for an electrochemical element of long life and excellent reliability is realized. | 10-09-2008 |
20080261112 | ELECTRODE MATERIAL FOR ELECTROCHEMCIAL DEVICE, METHOD FOR PRODUCING THE SAME, ELECTRODE USING THE ELECTRODE MATERIAL, AND ELECTROCHEMICAL DEVICE USING THE ELECTRODE MATERIAL - An electrode material of the present invention includes a plurality of particles capable of absorbing and desorbing lithium, and a plurality of nanowires capable of absorbing and desorbing lithium. The particles and the nanowires include silicon atoms. The plurality of nanowires are entangled with each other to form a network, and the network is in contact with at least two of the plurality of particles. | 10-23-2008 |
20080268338 | NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - The negative electrode for a rechargeable lithium battery includes a current collector and a negative active material layer disposed on the current collector. The negative active material layer includes a metal-based negative active material and sheet-shaped graphite and has porosity of 20 to 80 volume %. The negative electrode for a rechargeable lithium battery can improve cell characteristics by inhibiting volume change and stress due to active material particle bombardment during charge and discharge, and by decreasing electrode resistance. | 10-30-2008 |
20080292963 | CURRENT COLLECTOR FOR NONAQUEOUS SOLVENT SECONDARY BATTERY, AND ELECTRODE AND BATTERY, WHICH USE THE CURRENT COLLECTOR - A current collector for a nonaqueous solvent secondary battery, which includes: a first metal layer; and a second metal layer stacked on a surface of the first metal layer, is composed so that a Young's modulus (E | 11-27-2008 |
20080305395 | ANODE AND SECONDARY BATTERY - A battery capable of improving cycle characteristics is provided. An anode includes: an anode current collector, and an anode active material layer arranged on the anode current collector, in which the anode active material layer includes an anode active material including silicon (Si), and including a pore group with a diameter ranging from 3 nm to 50 nm both inclusive, and the volumetric capacity per unit weight of silicon of the pore group with a diameter ranging from 3 nm to 50 nm both inclusive is 0.2 cm | 12-11-2008 |
20080311472 | ANODE AND METHOD OF MANUFACTURING THE SAME, AND BATTERY AND METHOD OF MANUFACTURING THE SAME - A battery capable of improving cycle characteristics is provided. An anode includes: an anode current collector; an anode active material arranged on the anode current collector; and a coating arranged on the anode active material layer, in which the coating includes at least one of a metal salt represented by Chemical Formula 1 and a metal salt of oxocarbonic acid. | 12-18-2008 |
20090017380 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY USING SAME, AND METHODS FOR MANUFACTURING THOSE - A negative electrode for a secondary battery includes a separator; a negative electrode active material layer which is fixed to the separator and can store and emit lithium ions; and a current collector layer formed on the side of the separator opposite to the negative electrode active material layer. The negative electrode active material layer contains at least one selected from the group consisting of silicon, silicon alloys, compounds containing silicon and oxygen, compounds containing silicon and nitrogen, compounds containing silicon and fluorine, tin, tin alloys, compounds containing tin and oxygen, compounds containing tin and nitrogen, and compounds containing tin and fluorine. | 01-15-2009 |
20090029252 | ANODE, BATTERY, AND METHODS OF MANUFACTURING THEM - A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution. The anode has a coat on an anode active material layer provided on an anode current collector. The anode active material layer contains an anode material that is capable of inserting and extracting an electrode reactant and has at least one of a metal element and a metalloid element. The coat contains a metal salt having sulfur and oxygen. | 01-29-2009 |
20090047577 | NEGATIVE ELECTRODE ACTIVE MATERIAL AND NEGATIVE ELECTRODE USING THE SAME AND LITHIUM ION SECONDARY BATTERY - In a negative electrode active material for a lithium ion secondary battery including a silicon oxide capable of absorbing and desorbing lithium ions, a silicon oxide having structural units each in the form of a tetrahedron in which a silicon atom is located at its center and silicon or oxygen atoms are located at its four vertices is used. The structural units are arranged randomly to form an amorphous structure. In the case that the number of oxygen atoms located at the four vertices in the structural units is represented by n (n=0, 1, 2, 3 or 4) and the structural units are represented by Si(n), the number of the structural units NSi(n) in the silicon oxide satisfies the following relations (1) to (3). | 02-19-2009 |
20090061314 | Method of Processing Active Materials For Use In Secondary Electrochemical Cells - The present invention provides a method for the processing of particles of metal phosphates or particles of mixed metal phosphates and in particular lithiated metal phosphates and mixed metal phosphates. The processing occurs, for example using a mechanofusion system as depicted in FIGS. | 03-05-2009 |
20090061315 | Nonaqueous electrolyte battery - A nonaqueous electrolyte battery includes a negative electrode composed of a metallic lithium foil and a positive electrode, the negative electrode and the positive electrode being arranged so as to face each other with an ion-conducting medium therebetween. The positive electrode is formed by a method in which a conductive agent and a binder are mixed, and then the mixture is press-formed onto a current collector. The ion-conducting medium contains, in addition to a lithium salt such as lithium hexafluorophosphate, a halogen such as iodine, and a halogen compound (e.g., lithium iodide). Furthermore, the positive electrode may contain a lithium halide. | 03-05-2009 |
20090075173 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND METHOD OF PREPARING THE SAME - An negative active material for a rechargeable lithium battery includes a nano-composite including a Si phase, a SiO | 03-19-2009 |
20090081546 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, PROCESS FOR PREPARING THE SAME, AND POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode employs a positive electrode active material wherein oxide containing Al and/or hydroxide containing Al having a protruding-shape is uniformly distributed and adhered to the surface of a positive electrode active material particle. | 03-26-2009 |
20090087744 | METHOD OF MAKING CATHODE COMPOSITIONS - Provided is a method for preparing compositions useful as cathodes in lithium-ion electrochemical cells. The method includes blending a transition metal oxide or hydroxide with a mixed transition metal oxide, adding lithium carbonate, lithium hydroxide, or a combination to form a mixture and then sintering the mixture. | 04-02-2009 |
20090117462 | ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY COMPRISING SUCH ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode for a non-aqueous electrolyte secondary battery | 05-07-2009 |
20090136847 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND METHOD OF PREPARING THE SAME - A negative active material for a rechargeable lithium battery with a composite phase particle has a chemical formula, SiO | 05-28-2009 |
20090155687 | COMPOSITE ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, ANODE CONTAINING THE COMPOSITE ANODE ACTIVE MATERIAL, AND LITHIUM BATTERY CONTAINING THE COMPOSITE ANODE ACTIVE MATERIAL - A composite anode active material including: a metal capable of alloy formation with lithium; an intermetallic compound; and a solid solution, in which the solid solution is an alloy of the metal capable of alloy formation with lithium and the intermetallic compound, and the solid solution and the intermetallic compound have a same crystal structure. | 06-18-2009 |
20090162750 | METHOD OF PRODUCING LITHIUM ION-STORING/RELEASING MATERIAL, LITHIUM ION-STORING/RELEASING MATERIAL, AND ELECTRODE STRUCTURE AND ENERGY STORAGE DEVICE USING THE MATERIAL - A method of producing a material capable of electrochemically storing and releasing a large amount of lithium ions is provided. The material is used as an electrode material for a negative electrode, and includes silicon or tin primary particles composed of crystal particles each having a specific diameter and an amorphous surface layer formed of at least a metal oxide, having a specific thickness. Gibbs free energy when the metal oxide is produced by oxidation of a metal is smaller than Gibbs free energy when silicon or tin is oxidized, and the metal oxide has higher thermodynamic stability than silicon oxide or tin oxide. The method of producing the electrode material includes reacting silicon or tin with a metal oxide, reacting a silicon oxide or a tin oxide with a metal, or reacting a silicon compound or a tin compound with a metal compound to react with each other. | 06-25-2009 |
20090169994 | COMPOSITE FOR ANODE MATERIAL, ANODE MATERIALS AND LITHIUM BATTERY USING THE SAME - Provided is a composite for anode material, a method of manufacturing the composite for anode material, and a cathode and a lithium battery that includes the composite for anode material, and more particularly, to a composite for anode material that has a large charge and discharge capacity and a high capacity retention, a method of manufacturing the composite for anode material, and a cathode and a lithium battery that includes the composite for anode material. Also, the composite for anode material in which Si or Si and carbon are distributed in silicon oxide particles is provided. | 07-02-2009 |
20090202908 | CURRENT COLLECTOR, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode capable of effectively dispersing or relieving the stress generated in association with expansion and contraction of an active material is provided. The electrode is produced by forming an active material layer on a predetermined current collector. This current collector includes a base and a plurality of projections formed so as to extend outwardly from a surface of the base. The cross section of the projections in a thickness direction of the current collector has a tapered shape in which a width in a direction parallel to the surface of the base narrows from the surface of the base along an extending direction of the projections. | 08-13-2009 |
20090208844 | Secondary battery material - Embodiments of the invention relate to materials used in secondary batteries and the method for manufacturing the same. To address the problems of the prior art, an object of the present invention is to provide a negative electrode material for a non-aqueous Li-ion cell comprising active component particles capable of reversibly intercalating or alloying with lithium ions with a carbon coating layer containing an electronically conductive, elastic, carbon material capable of reversibly expanding and contracting to maintain electrical contact between the particles within an electrode matrix as the material is cycled electrochemically. Accordingly, several objects and advantages of embodiments of the invention include improved cycle life of high capacity active materials suitable for use in secondary batteries and the high capacity, long life cells. | 08-20-2009 |
20090233173 | COBALT OXYHYDROXIDE, METHOD FOR PRODUCING THE SAME AND ALKALINE STORAGE BATTERY USING THE SAME - Novel cobalt oxyhydroxide is provided with which a positive electrode of an alkaline storage battery having conductivity higher than that of the conventional positive electrodes can be produced, and a method for producing the same is provided. Furthermore, an alkaline storage battery having a high capacity and that can be manufactured easily is provided. The cobalt oxyhydroxide is used for a positive electrode of an alkaline storage battery, in which a first peak corresponding to a crystal plane (003) of the cobalt oxyhydroxide and a second peak corresponding to a crystal plane (012) of the cobalt oxyhydroxide are present on a diffraction line obtained by X-ray diffraction measurement when employing copper Kα radiation as a radiation source, a half-power band width of the first peak is 0.6° or less, and a value obtained by dividing a strength of the first peak by a strength of the second peak is 10 or less. | 09-17-2009 |
20090263717 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY ANODE MATERIAL WITH A UNIFORM METAL-SEMICONDUCTOR ALLOY LAYER - The present invention relates to nonaqueous electrolyte secondary batteries and durable anode materials and anodes for use in nonaqueous electrolyte secondary batteries. The present invention also relates to methods for producing these anode materials. 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 displacement solution. The displacement solution contains ions of the metal to be deposited and a dissolution component for dissolving a part of the semiconductor in the anode material. When the anode material is contacted with the displacement solution, the dissolution component dissolves a part of the semiconductor in the anode material thereby providing electrons to reduce the metal ions 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. | 10-22-2009 |
20090297947 | Nano-sized structured layered positive electrode materials to enable high energy density and high rate capability lithium batteries - Nano-sized structured dense and spherical layered positive active materials provide high energy density and high rate capability electrodes in lithium-ion batteries. Such materials are spherical second particles made from agglomerated primary particles that are Li | 12-03-2009 |
20090311601 | NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY - In the negative electrode of the present invention, the negative electrode current collector includes a substrate and a plurality of protrusions, and the protrusions are formed on the surface of the substrate. The negative electrode active material layer includes a columnar active material layer and a stacked active material layer containing an alloy-based negative electrode active material. The columnar active material layer includes one or more columns that extend outwardly from the surface of the protrusions. The stacked active material layer is formed by stacking a thin film in a zigzag manner on the substrate surface between the protrusions. By using this negative electrode, negative electrode deformation, and separation of the negative electrode active material layer from the negative electrode current collector are suppressed, and a lithium ion secondary battery that has excellent charge and discharge cycle performance and output performance can be obtained. | 12-17-2009 |
20090317719 | Material With Core-Shell Structure - Disclosed is a material having a composite particle. The composite particle includes an outer shell containing an element such as carbon, nitrogen, oxygen or sulfur and an inner core made from a lithium alloying material such as tin, silicon, aluminum and/or germanium. If the outer shell is made from carbon, the outer shell of the composite particle has an average thickness of less than 20 nanometers and the composite particle has an outer mean diameter of less than 100 nanometers. In some instances, the inner core is made from tin, a tin binary alloy, a tin tertiary alloy or a tin quaternary alloy. | 12-24-2009 |
20090325070 | Primary aluminum hydride battery - A primary aluminum hydride cell and a battery formed with a plurality of the cells is described herein.. In some embodiments, the cells are constructed of: | 12-31-2009 |
20100035152 | ELECTROCHEMICAL CELL INCLUDING FUNCTIONALLY GRADED AND ARCHITECTURED COMPONENTS AND METHODS - Electrochemical cells or batteries featuring functional gradations, and having desirable, periodic configurations, and methods for making the same. One or more methods, in alone or in combination, are utilized to fabricate components of such electrochemical cells or batteries, which are designed to achieve certain thermal, mechanical, kinetic and spatial characteristics, and their effects, singly and in all possible combinations, on battery performance. The thermal characteristics relate to temperature distribution during charge and discharge processes. The kinetic characteristics relate to rate performance of the cells or batteries such as the ionic diffusion process and electron conduction. The mechanical characteristics relate to lifetime and efficiency of the cells or batteries such as the strength and moduli of the component materials. Finally, the spatial characteristics relate to the energy and power densities, stress and temperature mitigation mechanisms, and diffusion and conduction enhancements. The electrochemical cells or batteries constructed according to the methods presented in this invention are useful for all applications that require high rate performance, high energy/power density, good durability, high safety and long lifetime. | 02-11-2010 |
20100112442 | ELECTRODE FOR ELECTROCHEMICAL DEVICE AND ELECTROCHEMICAL DEVICE USING THE SAME - An electrode for an electrochemical device according to the present invention includes a current collector and an active material layer formed on the current collector. The active material layer includes an active material capable of reversibly absorbing and desorbing lithium ions and having a theoretical capacity density of more than 833 mAh/cm | 05-06-2010 |
20100151320 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode for nonaqueous electrolyte secondary battery capable of reversible occlusion and release of lithium ions, comprising current collector ( | 06-17-2010 |
20100151321 | NEGATIVE ELECTRODE FOR COIN-SHAPED LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND COIN-SHAPED LITHIUM SECONDARY BATTERY - An object of the present invention resides in that under the use of an active material capable of attaining a high capacity, the volume expansion of the negative electrode is alleviated, the maintenance of the structure of the negative electrode is achieved, and the degradation of the battery capacity is suppressed. The present invention relates to a negative electrode for a coin-shaped lithium secondary battery, a coin-shaped lithium secondary battery including the negative electrode, and a method for producing the negative electrode for a coin-shaped lithium secondary battery, wherein: the negative electrode includes a molded negative electrode including a negative electrode active material capable of absorbing and desorbing lithium; the molded negative electrode is of a coin shape having two flat faces and a side edge, and has cracks along the thickness direction thereof; at least one of the two flat faces has recessed portions; and the cracks start from the recessed portions. | 06-17-2010 |
20100151322 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING NEGATIVE ELECTRODE THEREOF - Disclosed is a method for producing a negative electrode for nonaqueous electrolyte batteries, which comprises the following three steps: (A) a step for forming a negative electrode by depositing a negative electrode active material on a collector; (B) a step for subjecting the negative electrode to a heat treatment; and (C) a step for providing the negative electrode active material with lithium after the step (B). | 06-17-2010 |
20100209774 | Non-aqueous electrolyte secondary battery and method of manufacturing the same - An inorganic particle layer, provided on a surface of a positive electrode, containing inorganic particles, a dispersion stabilizer made of at least one of a polyacrylic acid and a polyacrylate, and a water-system binder that is different from the dispersion stabilizer. A non-aqueous electrolyte secondary battery that has the inorganic particle layer, a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a non-aqueous electrolyte, and a separator provided between the positive electrode and the negative electrode. | 08-19-2010 |
20100209775 | NEGATIVE ELECTRODE INCLUDING GROUP 14 METAL/METALLOID NANOTUBES, LITHIUM BATTERY INCLUDING THE NEGATIVE ELECTRODE, AND METHOD OF MANUFACTURING THE NEGATIVE ELECTRODE - A negative electrode and a lithium battery including the same, the negative electrode including nanotubes including a Group 14 metal/metalloid, disposed on a conductive substrate. | 08-19-2010 |
20100233539 | METHOD OF ETCHING A SILICON-BASED MATERIAL - A method is described of selectively etching a silicon substrate in small local areas in order to form columns or pillars in the etched surface. The silicon substrate is held in an etching solution of hydrogen fluoride, a silver salt and an alcohol. The inclusion of the alcohol provides a greater packing density of the silicon columns. | 09-16-2010 |
20100285358 | Electrode Including Nanostructures for Rechargeable Cells - A lithium ion battery electrode includes silicon nanowires used for insertion of lithium ions and including a conductivity enhancement, the nanowires growth-rooted to the conductive substrate. | 11-11-2010 |
20110008677 | ELECTRODE AND BATTERY HAVING THE SAME - Disclosed are an electrode and a battery comprising the electrode. The electrode comprises a nano composite comprising nano particles capable of being oxidized and reduced and a carbonaceous material covering the nano particles. | 01-13-2011 |
20110027650 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided are a negative electrode | 02-03-2011 |
20110039157 | ANODIC CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING THE SAME, LITHIUM SECONDARY BATTERY ANODE, AND LITHIUM SECONDARY BATTERY - The invention aims to improve the charge/discharge cycle characteristics of an anodic carbon material for a lithium secondary battery. An anodic carbon material for a lithium secondary battery according to the present invention comprises: particles containing carbon, or a metal or metalloid, or an alloy, oxide, nitride, or carbide thereof, the particle capable of absorbing and releasing lithium ions; a resinous carbon material enclosing the particles; and a network structure formed from carbon nanofibers and/or carbon nanotubes that bond to the surfaces of the particles and that enclose the particles. | 02-17-2011 |
20110059361 | ELECTROCHEMICAL CELLS COMPRISING POROUS STRUCTURES COMPRISING SULFUR - The present invention relates to the use of porous structures comprising sulfur in electrochemical cells. Such materials may be useful, for example, in forming one or more electrodes in an electrochemical cell. For example, the systems and methods described herein may comprise the use of an electrode comprising a conductive porous support structure and a plurality of particles comprising sulfur (e.g., as an active species) substantially contained within the pores of the support structure. The inventors have unexpectedly discovered that, in some embodiments, the sizes of the pores within the porous support structure and/or the sizes of the particles within the pores can be tailored such that the contact between the electrolyte and the sulfur is enhanced, while the electrical conductivity and structural integrity of the electrode are maintained at sufficiently high levels to allow for effective operation of the cell. Also, the sizes of the pores within the porous support structures and/or the sizes of the particles within the pores can be selected such that any suitable ratio of sulfur to support material can be achieved while maintaining mechanical stability in the electrode. The inventors have also unexpectedly discovered that the use of porous support structures comprising certain materials (e.g., metals such as nickel) can lead to relatively large increases in cell performance. In some embodiments, methods for forming sulfur particles within pores of a porous support structure allow for a desired relationship between the particle size and pore size. The sizes of the pores within the porous support structure and/or the sizes of the particles within the pores can also be tailored such that the resulting electrode is able to withstand the application of an anisotropic force, while maintaining the structural integrity of the electrode. | 03-10-2011 |
20110070491 | ELECTROCHEMICAL CELLS COMPRISING POROUS STRUCTURES COMPRISING SULFUR - The present invention relates to the use of porous structures comprising sulfur in electrochemical cells. Such materials may be useful, for example, in forming one or more electrodes in an electrochemical cell. For example, the systems and methods described herein may comprise the use of an electrode comprising a conductive porous support structure and a plurality of particles comprising sulfur (e.g., as an active species) substantially contained within the pores of the support structure. The inventors have unexpectedly discovered that, in some embodiments, the sizes of the pores within the porous support structure and/or the sizes of the particles within the pores can be tailored such that the contact between the electrolyte and the sulfur is enhanced, while the electrical conductivity and structural integrity of the electrode are maintained at sufficiently high levels to allow for effective operation of the cell. Also, the sizes of the pores within the porous support structures and/or the sizes of the particles within the pores can be selected such that any suitable ratio of sulfur to support material can be achieved while maintaining mechanical stability in the electrode. The inventors have also unexpectedly discovered that the use of porous support structures comprising certain materials (e.g., metals such as nickel) can lead to relatively large increases in cell performance. In some embodiments, methods for forming sulfur particles within pores of a porous support structure allow for a desired relationship between the particle size and pore size. The sizes of the pores within the porous support structure and/or the sizes of the particles within the pores can also be tailored such that the resulting electrode is able to withstand the application of an anisotropic force, while maintaining the structural integrity of the electrode. | 03-24-2011 |
20110070492 | ELECTRODE FOR A LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY EQUIPPED WITH SAME - A method for producing an electrode for a lithium secondary battery according to the present invention includes (A) a step of causing a vaporized vapor deposition material to be incident on a surface of a current collector | 03-24-2011 |
20110076560 | ELECTROCHEMICAL CELLS COMPRISING POROUS STRUCTURES COMPRISING SULFUR - The present invention relates to the use of porous structures comprising sulfur in electrochemical cells. Such materials may be useful, for example, in forming one or more electrodes in an electrochemical cell. For example, the systems and methods described herein may comprise the use of an electrode comprising a conductive porous support structure and a plurality of particles comprising sulfur (e.g., as an active species) substantially contained within the pores of the support structure. The inventors have unexpectedly discovered that, in some embodiments, the sizes of the pores within the porous support structure and/or the sizes of the particles within the pores can be tailored such that the contact between the electrolyte and the sulfur is enhanced, while the electrical conductivity and structural integrity of the electrode are maintained at sufficiently high levels to allow for effective operation of the cell. Also, the sizes of the pores within the porous support structures and/or the sizes of the particles within the pores can be selected such that any suitable ratio of sulfur to support material can be achieved while maintaining mechanical stability in the electrode. The inventors have also unexpectedly discovered that the use of porous support structures comprising certain materials (e.g., metals such as nickel) can lead to relatively large increases in cell performance. In some embodiments, methods for forming sulfur particles within pores of a porous support structure allow for a desired relationship between the particle size and pore size. The sizes of the pores within the porous support structure and/or the sizes of the particles within the pores can also be tailored such that the resulting electrode is able to withstand the application of an anisotropic force, while maintaining the structural integrity of the electrode. | 03-31-2011 |
20110076561 | METHOD FOR MANUFACTURING ELECTRODE, AND METHOD FOR MANUFACTURING POWER STORAGE DEVICE AND POWER GENERATION AND STORAGE DEVICE HAVING THE ELECTRODE - The characteristics of a power storage device are improved and the lifetime of the power storage device is prolonged. An electrode is manufactured through the following steps: a step of forming an electrode film; a step of forming a damage layer by ion doping on the electrode film; and a step of providing a damage region between the damage layer and a surface. Alkali ion insertion and extraction can be performed by dipping of an electrode, in which the damage layer and the damage region are formed, in a solution containing an alkali ion. A space in which the volume of the electrode is expanded can be secured by the formation of the damage layer and the damage region. Note that another lithium may be used instead of an alkali metal. | 03-31-2011 |
20110081576 | Negative electrode for a lithium battery, method of manufacturing the same, and lithium battery including the negative electrode - A negative electrode for a lithium battery, a method of manufacturing the same, and a lithium battery including the negative electrode, the negative electrode including a collector; and an active material layer, wherein the active material layer includes an indium tin oxide material capable of intercalation and deintercalation of lithium ions. | 04-07-2011 |
20110086269 | ANODE AND METHOD OF MANUFACTURING THE SAME, AND BATTERY AND METHOD OF MANUFACTURING THE SAME - An anode in which an anode active material layer is arranged on an anode current collector. The anode active material layer includes anode active material particles made of an anode active material including at least one of silicon and tin as an element. An oxide-containing film including an oxide of at least one kind selected from the group consisting of silicon, germanium and tin is formed in a region in contact with an electrolytic solution of the surface of each anode active material particle by a liquid-phase method such as a liquid-phase deposition method. The region in contact with the electrolytic solution of the surface of each anode active material particle is covered with the oxide-containing film, to thereby improve the chemical stability of the anode and the charge-discharge efficiency. The thickness of the oxide-containing film is preferably within a range from 0.1 nm to 500 nm both inclusive. | 04-14-2011 |
20110111296 | OPEN STRUCTURES IN SUBSTRATES FOR ELECTRODES - Provided are conductive substrates having open structures and fractional void volumes of at least about 25% or, more specifically, or at least about 50% for use in lithium ion batteries. Nanostructured active materials are deposited over such substrates to form battery electrodes. The fractional void volume may help to accommodate swelling of some active materials during cycling. In certain embodiments, overall outer dimensions of the electrode remain substantially the same during cycling, while internal open spaces of the conductive substrate provide space for any volumetric changes in the nanostructured active materials. In specific embodiments, a nanoscale layer of silicon is deposited over a metallic mesh to form a negative electrode. In another embodiment, a conductive substrate is a perforated sheet with multiple openings, such that a nanostructured active material is deposited into the openings but not on the external surfaces of the sheet. | 05-12-2011 |
20110117432 | INORGANIC BINDERS FOR BATTERY ELECTRODES AND AQUEOUS PROCESSING THEREOF - The present invention concerns battery electrodes, and more particularly rechargeable lithium battery electrodes, with active materials, containing an inorganic binder for cohesion between the electrode materials and adhesion to a current collector. These electrodes are produced from an aqueous slurry of active electrode materials, optionally conductive additives and a soluble precursor or nanoparticles or a colloidal dispersion of the inorganic binder by spreading the slurry on a current collector and drying. | 05-19-2011 |
20110143200 | METHOD OF MANUFACTURING CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND 1-D NANOCLUSTER CATHODE ACTIVE MATERIAL WITH CHESTNUT TYPE MORPHOLOGY OBTAINED BY THE METHOD - Provided are a method of manufacturing a cathode active material for a lithium battery, and a cathode active material obtained by the method. The method includes forming a precursor of a one-dimensional nanocluster manganese dioxide with a chestnut-type morphology, inserting lithium into the formed precursor and synthesizing a one-dimensional nanocluster cathode active material particle with a chestnut morphology, coating a water-soluble polymer on a surface of the cathode active material particle, adsorbing a metal ion to the surface of the cathode active material particle coated with the water-soluble polymer, and sintering the cathode active material particle to obtain the one-dimensional nanocluster cathode active material with a chestnut morphology. The cathode active material manufactured by the above method is a one-dimensional nanocluster with a chestnut-type morphology, which has a uniform-thick metal oxide layer on its surface, thereby ensuring an improved capacity of the cathode active material and an excellent cycle characteristic. | 06-16-2011 |
20110143201 | BATTERY - A battery with more superior reliability is provided. The battery includes: a battery element in which a cathode having a cathode active material layer on a strip-shaped cathode current collector and an anode having an anode active material layer on a strip-shaped anode current collector are layered with a separator in between, wherein the anode active material layer is provided to occupy a first region that is overlapped with a cathode active material layer formation region in which the cathode active material layer is provided on the cathode current collector and a peripheral region thereof in the anode, and out of a second region adjacent to the first region in the longitudinal direction in the anode, a width of a third region in which the anode active material layer is not formed and the anode current collector is exposed is smaller than a width of the first region. | 06-16-2011 |
20110143202 | Monolithic Three-Dimensional Electrochemical Energy Storage System on Aerogel or Nanotube Scaffold - A monolithic three-dimensional electrochemical energy storage system is provided on an aerogel or nanotube scaffold. An anode, separator, cathode, and cathodic current collector are deposited on the aerogel or nanotube scaffold. | 06-16-2011 |
20110151326 | ANODE AND BATTERY - An anode capable of relaxing the stress concentration and improving the characteristics and a battery using it are provided. The anode includes an anode current collector and an anode active material layer containing silicon (Si) as an element, wherein the anode active material layer has a metal element increasing and decreasing region in which a metal element is contained as an element, and a concentration of the metal element is increased and then decreased in a thickness direction. | 06-23-2011 |
20110159365 | TEMPLATE ELECTRODE STRUCTURES FOR DEPOSITING ACTIVE MATERIALS - Provided are examples of electrochemically active electrode materials, electrodes using such materials, and methods of manufacturing such electrodes. Electrochemically active electrode materials may include a high surface area template containing a metal silicide and a layer of high capacity active material deposited over the template. The template may serve as a mechanical support for the active material and/or an electrical conductor between the active material and, for example, a substrate. Due to the high surface area of the template, even a thin layer of the active material can provide sufficient active material loading and corresponding battery capacity. As such, a thickness of the layer may be maintained below the fracture threshold of the active material used and preserve its structural integrity during battery cycling. | 06-30-2011 |
20110159366 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A positive electrode for a non-aqueous electrolyte secondary battery, includes a current collector and an active material layer. The positive electrode active material layer includes an olivine-type lithium phosphate with a volume mean particle size of 2 nm to 300 nm, a fluorocarbon resin with a cross-linkable functional group, and a conductive agent. The fluorine atom concentration of the positive electrode active material layer decreases from the outer surface of the positive electrode active material layer toward the interface between the positive electrode active material layer and the positive electrode current collector. The fluorocarbon resin with the cross-linkable functional group is in an area from the interface up to 10 μm toward the outer surface. | 06-30-2011 |
20110165460 | LITHIUM SECONDARY BATTERY - A lithium secondary battery has a positive electrode ( | 07-07-2011 |
20110183205 | Process for Fabricating a Silicon-Based Electrode, Silicon-Based Electrode and Lithium Battery Comprising Such an Electrode - The invention relates to a process for manufacturing a silicon-based electrode and to a silicon-based electrode. It also relates to a lithium battery comprising such an electrode. The process of the invention consists in fabricating a silicon-based electrode of the type that includes a step of electrochemically depositing silicon on a substrate by cyclic voltammetry in a solution comprising at least one ionic liquid and a silicon precursor of formula Si | 07-28-2011 |
20110183206 | APPARATUS, SYSTEM, AND METHOD FOR CARBON NANOTUBE TEMPLATED BATTERY ELECTRODES - An apparatus, system, and method are disclosed for a carbon nanotube templated battery electrode. The apparatus includes a substrate, and a plurality of catalyst areas extending upward from the substrate, the plurality of catalyst areas forming a patterned frame. The apparatus also includes a carbon nanotube forest grown on each of the plurality of catalyst areas and extending upward therefrom such that a shape of the patterned frame is maintained, and a coating attached to each carbon nanotube in the carbon nanotube forest, the coating formed of an electrochemically active material. The system includes the apparatus, and a particulate cathode material distributed evenly across the apparatus such that the particulate cathode material fills the passages, a current collector film formed on top of the particulate cathode material, and a porous spacer disposed between the apparatus and the cathode. | 07-28-2011 |
20110183207 | LITHIUM ION SECONDARY BATTERY AND ANODE FOR LITHIUM ION SECONDARY BATTERY - There is provided a lithium ion secondary battery including: a cathode; an anode: and an electrolytic solution. The anode has an anode active material layer on an anode current collector, the anode active material layer contains an anode active material having silicon (Si) as an element and a metal conductive material having a metal element as an element, and a void ratio of the anode active material layer measured by mercury intrusion method (pressure: 90 MPa) is 10% or less. | 07-28-2011 |
20110183208 | NEGATIVE-ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NEGATIVE ELECTRODE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative-electrode active material for nonaqueous electrolyte secondary battery, comprising a silicon compound capable of inserting and extracting lithium ion, wherein the silicon compound contains silicon-hydrogen bonds and the silicon-hydrogen bonds are introduced into the compound by reduction of at least one compound selected from the group consisting of silicon oxide, silicon nitride and silicon carbide with hydrogen, and a negative electrode for nonaqueous electrolyte secondary battery having a layer containing the negative-electrode active material in the above arrangement formed on a current collector. | 07-28-2011 |
20110200876 | Positive electrode and lithium battery using same - A positive electrode having a surface on which a positive electrode active material composition including a positive electrode active material is formed. The positive electrode includes a first lithium compound having an open-circuit voltage less than 3V with respect to lithium metal, and a second lithium compound having an open-circuit voltage of 3 V or greater with respect to lithium metal. The first lithium compound includes a solid solution represented by Formula 1: | 08-18-2011 |
20110200877 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a positive electrode ( | 08-18-2011 |
20110217592 | CATHODE FOR LITHIUM-ION SECONDARY BATTERY, LITHIUM-ION SECONDARY BATTERY, VEHICLE AND POWER STORAGE SYSTEM EQUIPPED WITH THE BATTERY - A cathode for a lithium-ion secondary battery is provided, which not only efficiently absorbs oxygen released from a solid solution based cathode active material when initial charging is applied but prevents a cathode energy density from lowering. Further, a lithium-ion secondary battery, a vehicle and a power storage system equipped with the lithium-ion secondary battery are provided. The cathode for a lithium-ion secondary battery comprises a cathode active material represented by the general formula: xLi | 09-08-2011 |
20110223480 | NANOPARTICLE DECORATED NANOSTRUCTURED MATERIAL AS ELECTRODE MATERIAL AND METHOD FOR OBTAINING THE SAME - The present invention refers to a nanostructured material comprising nanoparticles bound to its surface. The nanostructured material comprises nanoparticles which are bound to the surface, wherein the nanoparticles have a maximal dimension of about 20 nm. Furthermore, the nanostructured material comprises pores having a maximal dimension of between about 2 nm to about 5 μm. The nanoparticles bound on the surface of the nanostructured material are noble metal nanoparticles or metal oxide nanoparticles or mixtures thereof. The present invention also refers to a method of their manufacture and the use of these materials as electrode material. | 09-15-2011 |
20110229761 | INTERCONNECTING ELECTROCHEMICALLY ACTIVE MATERIAL NANOSTRUCTURES - Provided are various examples of lithium electrode subassemblies, lithium ion cells using such subassemblies, and methods of fabricating such subassemblies. Methods generally include receiving nanostructures containing electrochemically active materials and interconnecting at least a portion of these nanostructures. Interconnecting may involve depositing one or more interconnecting materials, such as amorphous silicon and/or metal containing materials. Interconnecting may additionally or alternatively involve treating a layer containing the nanostructures using various techniques, such as compressing the layer, heating the layer, and/or passing an electrical current through the layer. These methods may be used to interconnect nanostructures containing one or more high capacity materials, such as silicon, germanium, and tin, and having various shapes or forms, such as nanowires, nanoparticles, and nano-flakes. | 09-22-2011 |
20110236753 | SECONDARY BATTERY AND METHOD FOR MANUFACTURING ELECTRODE OF THE SAME - A secondary battery to be provided includes an electrode including silicon or a silicon compound, and the electrode includes, for example, a current collector formed using metal and a silicon film as an active material provided over the current collector. The hydrogen concentration in the silicon film of the electrode may be higher than or equal to 1.0×10 | 09-29-2011 |
20110236754 | SECONDARY BATTERY AND METHOD FOR FORMING ELECTRODE OF SECONDARY BATTERY - An object is to provide a secondary battery having excellent charge-discharge cycle characteristics. A secondary battery including an electrode containing silicon or a silicon compound is provided, in which the electrode is provided with a layer containing silicon or a silicon compound over a layer of a metal material; a mixed layer of the metal material and the silicon is provided between the metal material layer and the layer containing silicon or a silicon compound; the metal material has higher oxygen affinity than that of ions which give and receive electric charges in the secondary battery; and an oxide of the metal material does not have an insulating property. The ions which give and receive electric charges are alkali metal ions or alkaline earth metal ions. | 09-29-2011 |
20110236755 | ENERGY STORAGE DEVICE AND MANUFACTURING METHOD THEREOF - An electrode of an energy storage device with less deterioration by charge and discharge can be manufactured. In addition, an energy storage device which has large capacity and high endurance can be manufactured. A manufacturing method of an electrode of an energy storage device is provided in which a high-wettability regions and a low-wettability region are formed at a surface of a current collector, a composition containing silicon, germanium, or tin is discharged to the high-wettability regions and then baked to form separate active materials over a surface of the current collector. Thus, an electrode of an energy storage device with less deterioration due to charge and discharge can be manufactured. | 09-29-2011 |
20110244327 | LITHIUM SECONDARY BATTERY - A lithium secondary battery includes a negative electrode, a positive electrode, and an electrolyte. The negative electrode includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is provided on the negative electrode current collector. The negative electrode active material layer contains silicon and oxygen. A low oxygen content layer is provided in a portion of the negative electrode active material layer on the negative electrode current collector side, the low oxygen content layer having an oxygen content lower than that of the remaining portion of the negative electrode active material layer. The thickness of the low oxygen content layer is 25% or less of the thickness of the negative electrode active material layer. | 10-06-2011 |
20110244328 | NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME, AND METHOD FOR MANUFACTURING NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - There is provided a negative electrode for a nonaqueous electrolyte secondary battery in which when a battery is formed, the energy density is high, and moreover, the decrease in charge and discharge capacity is small even if charge and discharge are repeated. By using silicon oxide particles having a particle diameter in a particular range as a starting raw material, and heating these particles in the range of 850° C. to 1050° C., Si microcrystals are deposited on the surfaces of the particles. Then, by performing doping of Li, a structure comprising a plurality of protrusions having height and cross-sectional area in a particular range is formed on the surfaces. The average value of the height of the above protrusions is 2% to 19% of the average particle diameter of the above lithium-containing silicon oxide particles. By using the lithium-containing silicon oxide particles obtained by the above means as a negative electrode active material, a negative electrode for a nonaqueous electrolyte secondary battery is fabricated. | 10-06-2011 |
20110250498 | METHOD OF FABRICATING STRUCTURED PARTICLES COMPOSED OF SILICON OR A SILICON-BASED MATERIAL - A process of etching silicon includes treating silicon, e.g. granules or bulk material, with an etching solution, including HF, Ag | 10-13-2011 |
20110256451 | NANOTUBE-BASED NANOMATERIAL MEMBRANE - As consistent with various embodiments, an electronic device includes a carbon nanotube film having a plurality of carbon nanotubes. In certain embodiments, a coating, such as an inorganic coating, is formed on a surface of carbon nanotube. The nanotube film supports the device and facilitates electrical conduction therein. The coated nanotube is amenable to implementation with devices such as thin film batteries, a battery separator, thin film solar cells and high-energy Lithium ion batteries. | 10-20-2011 |
20110256452 | METHOD OF PREPARING NEGATIVE ACTIVE MATERIAL FOR A RECHARGEABLE LITHIUM BATTERY AND A RECHARGEABLE LITHIUM BATTERY - The present invention provides a method of preparing a negative active material for a rechargeable lithium battery, comprising the steps of: mixing a silicon precursor, a surfactant comprising an ammonium halide salt having a organic group, an initiator, and a solvent; heat-treating the mixture; cooling the heat-treated mixture to room temperature; washing the cooled, heat treated mixture; and calcining the washed product. | 10-20-2011 |
20110269019 | A METHOD OF FABRICATING STRUCTURED PARTICLES COMPOSED OF SILICON OR A SILICON-BASED MATERIAL AND THEIR USE IN LITHIUM RECHARGEABLE BATTERIES - A process for etching silicon to form silicon pillars on the etched surfaces, includes treating silicon with an etching solution that includes 5 to 10M HF 0.01 to 0.1M Ag | 11-03-2011 |
20110269020 | ELECTROCHEMICAL ELEMENT ELECTRODE PRODUCING METHOD, ELECTROCHEMICAL ELEMENT ELECTRODE, AND ELECTROCHEMICAL ELEMENT - Provided is a method for easily and surely removing projections formed on the surface of an active material layer by a vacuum process when producing an electrochemical element electrode. Carried out to produce the electrochemical element electrode are: a first step of forming an active material layer on a current collector by a vacuum process, the active material layer being capable of storing and emitting lithium; a second step of storing the lithium in the active material layer; and a third step of removing projections on the surface of the active material layer storing the lithium. | 11-03-2011 |
20110287317 | METHOD FOR MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention is a method for manufacturing a negative electrode active material for a non-aqueous electrolyte secondary battery comprising at least depositing silicon on a substrate by vapor deposition by using a metallic silicon as a raw material, the substrate having a temperature controlled to 300° C. to 800° C. under reduced pressure, and pulverizing and classifying the deposited silicon. As a result, there is provided a method for manufacturing a negative electrode active material composed of silicon particles that is an active material useful as a negative electrode of a non-aqueous electrolyte secondary battery in which high initial efficiency and high battery capacity of silicon are kept, cycle performance is superior, and an amount of a change in volume decreases at the time of charge and discharge. | 11-24-2011 |
20110287318 | MULTIDIMENSIONAL ELECTROCHEMICALLY ACTIVE STRUCTURES FOR BATTERY ELECTRODES - Provided are novel multidimensional electrode structures containing high capacity active materials for use in rechargeable electrochemical cells. These structures include main support structures and multiple nanowires attached to the support structures and extending into different directions away from these supports. The active material may be deposited as a layer (uniform or non-uniform) surrounding the nanowires and, in certain embodiments, the main supports and even substrate. The active material layer may be sufficiently thin to prevent pulverization of the layer at given operating conditions. Interconnections between the electrode structures and/or substrate may be provided by overlaps formed during deposition of the active layer. Silicide-based nano wires structures may be formed on the main supports in a fluidized bed reactor by suspending the metal-containing main supports in a silicon-containing process gas. A layer of silicon may be then deposited over these silicide nanowires. | 11-24-2011 |
20110294011 | ENERGY STORAGE DEVICE AND MANUFACTURING METHOD THEREOF - An energy storage device is provided in which a discharge capacity can be high and/or in which degradation of an electrode due to repetitive charge and discharge can be reduced. An electrode of the energy storage device which includes a crystalline silicon layer serving as an active material layer is provided. The crystalline silicon layer includes a crystalline silicon region and a whisker-like crystalline silicon region having a plurality of protrusions projected upward from the crystalline silicon region. The protrusions include a first protrusion and a second protrusion; the second protrusion has a larger length along the axis and a sharper tip than the first protrusion. | 12-01-2011 |
20110294012 | ANODE FOR LITHIUM-ION RECHARGEABLE BATTERY AND LITHIUM-ION RECHARGEABLE BATTERY INCLUDING SAME - It is an objective of the present invention to provide a lithium-ion rechargeable battery anode which can control the volume change of a primary particle of a negative-electrode active material other than a carbon-based material and that can prevent cracks due to stress caused by the volume change from occurring and extending. There is provided an anode for a lithium-ion rechargeable battery including a primary particle of a negative-electrode active material, a conductive material, and a binder, the negative-electrode active material including at least one of silicon and tin, and at least one element selected from elements that do not chemically react with lithium, in which holes are present both in an inner core region in the central region of the primary particle of the negative-electrode active material and in a periphery region that covers the inner core region. | 12-01-2011 |
20110300445 | POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME - A power storage device which can have an improved performance such as higher discharge capacity and in which deterioration due to peeling of an active material layer or the like is difficult to occur, and a method for manufacturing the power storage device are provided. The power storage device includes a current collector, a mixed layer formed over the current collector, and a crystalline silicon layer which is formed over the mixed layer and functions as an active material layer. The crystalline silicon layer includes a crystalline silicon region and a whisker-like crystalline silicon region including a plurality of protrusions projecting over the crystalline silicon region. The whisker-like crystalline silicon region includes a protrusion having a bending or branching portion. | 12-08-2011 |
20120003534 | POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY WITH HIGH VOLTAGE AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - A positive electrode for a rechargeable lithium battery capable of providing a high voltage and a high voltage rechargeable lithium battery including the same, wherein the positive electrode includes a positive active material and a capacitor-reactive carbonaceous material having a specific surface area at or between 10 m | 01-05-2012 |
20120003535 | ENERGY STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME - Provided are an energy storage device including an electrode in which lithium is introduced into a silicon layer and a method for manufacturing the energy storage device. A silicon layer is formed over a current collector, a solution including lithium is applied on the silicon layer, and heat treatment is performed thereon; thus, at least lithium can be introduced into the silicon layer. By using the solution including lithium, even when the silicon layer includes a plurality of silicon microparticles, the solution including lithium can enter a space between the microparticles and lithium can be introduced into the silicon microparticles which are in contact with the solution including lithium. Moreover, even when the silicon layer is a thin silicon film or includes a plurality of whiskers or whisker groups, the solution can be uniformly applied; accordingly, lithium can be included in silicon easily. | 01-05-2012 |
20120003536 | STRUCTURED SILICON ANODE - A battery can be fabricated from a substrate including silicon. This allows the battery to be produced as an integrated unit. The battery includes a anode formed from an array of spaced elongated structures, such as pillars, which include silicon and which can be fabricated on the substrate. The battery also includes a cathode which can include lithium. | 01-05-2012 |
20120015247 | SILICON CRYSTAL BODY AND POWER STORAGE DEVICE USING THE SILICON CRYSTAL BODY - It is difficult to obtain discharge capacity as high as the theoretical capacity in the case where silicon is used as a negative electrode active material. Therefore, objects are to provide a negative electrode active material capable of increasing discharge capacity and to provide a high-performance power storage device including the negative electrode active material. As the negative electrode active material with which the objects are achieved, a silicon crystal body including a plurality of crystalline regions is provided. The silicon crystal body has one extension direction. The plurality of crystalline regions have respective crystal orientations that are substantially the same (also referred to as a preferred orientation). The extension direction and the preferred direction are substantially the same. | 01-19-2012 |
20120021283 | Silicon Clathrate Anodes For Lithium-Ion Batteries - The present disclosure is directed at an electrode and methods for forming such electrode for a battery wherein the electrode comprises silicon clathrate. The silicon clathrate may include silicon clathrate Si | 01-26-2012 |
20120021284 | POSITIVE ELECTRODE AND LITHIUM BATTERY INCLUDING THE SAME - Disclosed is a positive electrode and a lithium battery including the positive electrode. The positive electrode includes a current collector, a first layer irreversibly deintercalating lithium ions, and a second layer allowing reversible intercalation and deintercalation of lithium ions. In one embodiment, the first layer further comprises a first sublayer and a second sublayer, in which the first sublayer is interposed between the current collector and the second sublayer. The first sublayer comprises a first active material represented by Formula 1 Li | 01-26-2012 |
20120021285 | NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND LITHIUM ION SECONDARY BATTERY - A negative electrode for a lithium ion secondary battery includes a current collector and a negative electrode active material layer supported on a surface of the current collector. The negative electrode active material layer includes a plurality of granular particles that include an alloyable active material. The granular particles are supported on a region of the current collector excluding a peripheral region that has a width of 20 μm to 500 μm from the edge thereof. | 01-26-2012 |
20120021286 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode having a negative active material, and a non-aqueous electrolyte; characterized in that the negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B), and carbon material (D), wherein the weight of the electronic conductive additive (B) falls within the range of 0.5 wt. % to 60 wt. % to the weight of the composite particle (C). The negative active material contains silicon which is capable of performing high discharge capacity, so that a non-aqueous electrolyte secondary battery having a large discharge capacity can be obtained. In addition, since the negative active material contains the electronic conductive additive (B) and the carbon material (D), the contact conductivity between the silicon-containing particle (A) or between the negative active material improves and, as a result, a non-aqueous electrolyte secondary battery having satisfactory cycle performance can be attained. | 01-26-2012 |
20120028118 | ELECTRODE COMPOSITE MATERIAL, METHOD FOR MAKING THE SAME, AND LITHIUM ION BATTERY USING THE SAME - A cathode composite material includes a cathode active material particle having a surface and a continuous aluminum phosphate layer. The continuous aluminum phosphate layer is coated on the surface of the cathode active material particle. The present disclosure also relates to a lithium ion battery including the cathode composite material. | 02-02-2012 |
20120070738 | NEEDLE-LIKE MICROSTRUCTURE AND DEVICE HAVING NEEDLE-LIKE MICROSTRUCTURE - A needle-like structure of silicon is provided. A crystalline silicon region is formed over a metal substrate by an LPCVD method, whereby whisker-like crystalline silicon which is a polycrystalline body and grows in the < | 03-22-2012 |
20120070739 | GALVANIC ELEMENT HAVING A MERCURY-FREE NEGATIVE ELECTRODE - A galvanic element includes a mercury-free negative electrode which consists essentially of a metal or a metal alloy and a nonmetallic conductive agent. A method for producing a galvanic element includes a mercury-free negative electrode produced from a powder of metal or metal alloy particles, surfaces of which are at least partially coated with a nonmetallic conductive agent. | 03-22-2012 |
20120070740 | NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY - Disclosed is a negative electrode for a lithium ion secondary battery, the negative electrode including a negative electrode current collector with protrusions formed on a surface thereon, and columnar bodies being carried on the protrusions and comprising an alloy active material capable of absorbing and releasing lithium ions. The columnar bodies each have a multilayer structure in which a plurality of unit layers comprising the alloy active material are stacked sequentially on the surface of the protrusion, and the average layer thickness of the unit layer in a region within 20% of the thickness of the columnar body extending from the surface of the protrusion is smaller than that in a region within 80% of the thickness of the columnar body extending from the top of the columnar body. | 03-22-2012 |
20120100427 | METHOD OF FABRICATING FIBRES COMPOSED OF SILICON OR A SILICON-BASED MATERIAL AND THEIR USE IN LITHIUM RECHARGEABLE BATTERIES - An electrically interconnected mass includes elongated structures. The elongated structures are electrochemically active and at least some of the elongated structures cross over each other to provide intersections and a porous structure. The elongated structures include doped silicon. | 04-26-2012 |
20120237827 | POROUS METAL BODY, METHOD FOR PRODUCING THE SAME, AND MOLTEN-SALT BATTERY - A porous metal body includes a porous skeleton that forms a three-dimensional network structure and includes an aluminum layer having a thickness of 1 to 100 μm, and tin layers disposed on an internal surface and an external surface of the aluminum layer. Such a porous metal body can be produced by an internal-tin-layer formation step of forming a tin layer on a surface of a resin molded body having a three-dimensional network structure; an aluminum-skeleton formation step of forming an aluminum layer serving as an aluminum skeleton on a surface of the internal tin layer; an external-tin-layer formation step of forming a tin layer on a surface of the aluminum skeleton; and a resin removal step of removing the resin molded body, the resin removal step being performed after the aluminum-skeleton formation step or after the external-tin-layer formation step. | 09-20-2012 |
20120244441 | SILICON FILM AND LITHIUM SECONDARY BATTERY - Provided are a silicon film which can give an electrode suitable for use in high-capacity lithium secondary batteries, and a process for easily producing the silicon film. The silicon film comprises a columnar aggregate which is an aggregate of columnar structures made of Si or a Si compound. The silicon film may be a film wherein the diameter of the columnar structures is from 10 nm to 100 nm and the film thickness is from 0.2 μm to 100 μm. In the process for preparing a silicon film on a substrate by vapor deposition using a vapor deposition source made of Si or a Si compound, the temperature of the vapor deposition source is 1700 K or higher, the temperature of the substrate is lower than that of the vapor deposition source, and the temperature difference between the vapor deposition source and the substrate is 700 K or larger. In the process for preparing the silicon film, the distance (D) between the vapor deposition source and the substrate is shorter than the minimum diameter (P) of the substrate, the minimum diameter (P) being determined by viewing the substrate from the perpendicular direction. Also provided are an electrode comprising the silicon film, and a lithium secondary battery comprising the electrode as a negative electrode. | 09-27-2012 |
20120258361 | ANODE ACTIVE MATERIAL, ANODE AND LITHIUM BATTERY CONTAINING THE SAME, AND PREPARATION METHOD THEREOF - An anode active material. The anode active material includes a core including SiO | 10-11-2012 |
20120264017 | ENCAPSULATED SULFUR CATHODE FOR LITHIUM ION BATTERY - Methods of making a cathode element for an electrochemical cell. The methods comprise providing hollow carbon nanotubes and a sulfur source in a closed environment. Sulfur is deposited within an interior of the hollow carbon nanotube. The method includes cleaning an exterior surface of the carbon nanotubes and incorporating the carbon nanotubes into a cathode element. A cathodic material for a lithium-sulfur electrochemical cell is also provided. The material comprises a plurality of stacked-cone carbon nanotubes. Each nanotube defines a hollow interior and has a substantially continuous exterior surface area. Elemental sulfur is disposed within the hollow interior of each nanotube. | 10-18-2012 |
20120276452 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR ELECTRICITY STORAGE DEVICE, AND METHOD FOR PRODUCING SAME - A negative electrode active material for an electricity storage device comprises at least SnO as a composition thereof. When a binding energy value of an electron on a Sn 3d | 11-01-2012 |
20120295160 | Clathrate Allotropes For Rechargeable Batteries - The present disclosure is directed at clathrate (Type I) allotropes of silicon, germanium and tin. In method form, the present disclosure is directed at methods for forming clathrate allotropes of silicon, germanium or tin which methods lead to the formation of empty cage structures suitable for use as electrodes in rechargeable type batteries. | 11-22-2012 |
20120301785 | PROCESS FOR FABRICATING NANOWIRE ARRAYS - A process is provided for etching a silicon-containing substrate to form nanowire arrays. In this process, one deposits nanoparticles and a metal film onto the substrate in such a way that the metal is present and touches silicon where etching is desired and is blocked from touching silicon or not present elsewhere. One submerges the metallized substrate into an etchant aqueous solution comprising HF and an oxidizing agent. In this way arrays of nanowires with controlled diameter and length are produced. | 11-29-2012 |
20120321951 | METHOD FOR PRODUCING POROUS METAL BODY, POROUS ALUMINUM BODY, BATTERY ELECTRODE MATERIAL INCLUDING POROUS METAL BODY OR POROUS ALUMINUM BODY, AND ELECTRODE MATERIAL FOR ELECTRICAL DOUBLE LAYER CAPACITOR - A porous metal body containing continuous pores and having a low oxygen content is provided by decomposing a porous resin body that contains continuous pores and has a layer of a metal thereon by heating the porous resin body at a temperature equal to or less than the melting point of the metal while the porous resin body is immersed in a first molten salt and a negative potential is applied to the metal layer; and a method for producing the porous metal body is provided. | 12-20-2012 |
20120321952 | METHOD FOR PRODUCING POROUS METAL BODY, POROUS ALUMINUM BODY, BATTERY ELECTRODE MATERIAL INCLUDING POROUS METAL BODY OR POROUS ALUMINUM BODY, AND ELECTRODE MATERIAL FOR ELECTRICAL DOUBLE LAYER CAPACITOR - A porous metal body containing continuous pores and having a low oxygen content is provided by decomposing a porous resin body that contains continuous pores and has a layer of a metal thereon by heating the porous resin body at a temperature equal to or less than the melting point of the metal while the porous resin body is immersed in a first molten salt and a negative potential is applied to the metal layer; and a method for producing the porous metal body is provided. | 12-20-2012 |
20130040199 | METHOD FOR MANUFACTURING ELECTRODE ACTIVE MATERIAL - In the method for manufacturing a particulate electrode active material provided by the present invention, a compound comprising phosphorus or boron is added to a mixed material prepared by mixing a carbon source supply material prepared by dissolving a carbon source ( | 02-14-2013 |
20130052533 | NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - In one aspect, a negative active material for a lithium secondary battery including silicon oxide represented by a chemical formula SiO | 02-28-2013 |
20130065127 | MULTICOMPONENT ELECTRODES FOR RECHARGEABLE BATTERIES - The present invention pertains to sulfur cathodes for use in an electric current producing cells or rechargeable batteries. The sulfur cathode comprises an electroactive sulfur containing material, an electrically conductive filler and a non-electroactive component. The invention further pertains to rechargeable batteries comprising said sulfur cathode. | 03-14-2013 |
20130065128 | ENCAPSULATED SULFUR CATHODES FOR RECHARGEABLE LITHIUM BATTERIES - A battery includes an anode, a cathode, and an electrolyte disposed between the anode and the cathode. The cathode includes a hollow structure defining an internal volume and a sulfur-based material disposed within the internal volume. A characteristic dimension of the internal volume is at least 20 nm, and the sulfur-based material occupies less than 100% of the internal volume to define a void. | 03-14-2013 |
20130089785 | NEGATIVE-ELECTRODE MATERIAL POWDER FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR CAPACITOR, LITHIUM-ION SECONDARY BATTERY, AND CAPACITOR - Provided is a negative-electrode material powder used for a lithium-ion secondary battery having a large discharge capacity and sufficient cycle characteristics as being durable in use. The powder for the battery includes a conductive carbon film on a lower silicon oxide powder, surface and satisfies requirements that: Si in SiC is 15.1 wt % or less in content, or A3 (=A2−A1) is 15.1 or less, given A1 (wt %): Si content measured by acid solution process, and A2 (wt %): Si content measured by alkali solution process; and a specific resistance is 30,000 Ωcm or less. In the lower silicon oxide powder, a maximum value P1 of SiO | 04-11-2013 |
20130122368 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERIES - A negative electrode material is provided for lithium ion batteries offering a high capacity and a long cycle life. It is an alloy material consisting essentially of Si, Al, M1, and M2 wherein M1 is a transition metal, and M2 is a metal element of Groups 4 and 5, and having an Si—Al-M1−M2 alloy phase constituting fine crystal grains and an Si phase precipitating along crystal grain boundaries to form a network. | 05-16-2013 |
20130149606 | NEGATIVE ELECTRODE MATERIAL POWDER FOR LITHIUM-ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND NEGATIVE ELECTRODE FOR CAPACITOR USING THE SAME, AND LITHIUM-ION SECONDARY BATTERY AND CAPACITOR - Provided is a negative-electrode material powder for a lithium-ion secondary battery including a conductive carbon film on the surface of a silicon oxide powder, in which the total content of tar components is not less than 1 ppm and not more than 4000 ppm, and in the Raman spectrum, peaks exist at 1350 cm | 06-13-2013 |
20130164620 | CATHODE FOR LITHIUM-SULFUR SECONDARY BATTERY CONTAINING SULFUR-INFILTRATED MESOPOROUS NANOCOMPOSITE STRUCTURE AND MESOPOROUS NANO CONDUCTIVE MATERIAL - Disclosed is a cathode for a lithium-sulfur secondary battery. The cathode for the lithium-sulfur secondary battery includes a sulfur-infiltrated mesoporous nanocomposite structure and a mesoporous conductive material. The sulfur-infiltrated mesoporous nanocomposite structure includes a mesoporous conductive material with pores infiltrated with sulfur particles. The mesoporous conductive material has vacant pores and the same type of mesoporous conductive material as the sulfur-infiltrated mesoporous nanocomposite structure. Here, the sulfur-infiltrated mesoporous nanocomposite structure and the mesoporous conductive material are disposed at a volume ratio of about 1:0.1 to 0.9 and are adjacent to each other. | 06-27-2013 |
20130164621 | NEGATIVE ELECTRODE MATERIAL POWDER FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR CAPACITOR, LITHIUM ION SECONDARY BATTERY, AND CAPACITOR - A negative electrode material powder for a lithium ion secondary battery having a conductive carbon film on the surface of a lower-silicon-oxide powder; wherein a specific surface area in BET measurement ranges from more than 0.3 m | 06-27-2013 |
20130209883 | NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - According to an embodiment of the present invention, a negative active material for a rechargeable lithium battery includes silicon oxide particles represented by SiO | 08-15-2013 |
20130224593 | COMPLIANT SEAL STRUCTURES FOR PROTECTED ACTIVE METAL ANODES - Protected anode architectures have ionically conductive protective membrane architectures that, in conjunction with compliant seal structures and anode backplanes, effectively enclose an active metal anode inside the interior of an anode compartment. This enclosure prevents the active metal from deleterious reaction with the environment external to the anode compartment, which may include aqueous, ambient moisture, and/or other materials corrosive to the active metal. The compliant seal structures are substantially impervious to anolytes, catholyes, dissolved species in electrolytes, and moisture and compliant to changes in anode volume such that physical continuity between the anode protective architecture and backplane are maintained. The protected anode architectures can be used in arrays of protected anode architectures and battery cells of various configurations incorporating the protected anode architectures or arrays. | 08-29-2013 |
20130224594 | Core-Shell Composites for Sulfur-Based Cathodes in Metal-Ion Batteries - A battery cathode electrode composition is provided comprising core-shell composites. Each of the composites may comprise a sulfur-based core and a multi-functional shell. The sulfur-based core is provided to electrochemically react with metal ions during battery operation to store the metal ions in the form of a corresponding metal-sulfide during discharging or charging of the battery and to release the metal ions from the corresponding metal-sulfide during charging or discharging of the battery. The multi-functional shell at least partially encases the sulfur-based core and is formed from a material that is (i) substantially permeable to the metal ions of the corresponding metal-sulfide and (ii) substantially impermeable to electrolyte solvent molecules and metal polysulfides. | 08-29-2013 |
20130252103 | POROUS SUPPORT STRUCTURES, ELECTRODES CONTAINING SAME, AND ASSOCIATED METHODS - Electrodes comprising metal support structures and methods for making the same are generally described. In certain embodiments, the electrodes described herein comprise a metal porous support structure, and an electrode active material at least partially contained within the pores of the porous support structure. In some embodiments, the electrical conductivity of the porous support structure material can ensure that electrons are efficiently transferred through and/or out of the electrode (e.g., to a current collector and/or to an external circuit). The pores within the porous support structure can ensure, in certain embodiments, that the electrode active material is accessible to the electrolyte, thereby enhancing performance of the electrochemical cell in which the electrode is used. | 09-26-2013 |
20130260242 | NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY AND LITHIUM-ION SECONDARY BATTERY - The negative electrode for lithium-ion secondary battery is used in which a product of tensile strength and thickness of a negative electrode having a negative electrode active material layer containing silicon and silicon oxide as main components is 3.8 to 9.0 N/mm and a value obtained by dividing the product of the tensile strength and the thickness of the negative electrode by a product of tensile strength and thickness of a negative electrode current collector is 1.06 to 1.29. | 10-03-2013 |
20130260243 | NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY - A negative electrode includes a negative electrode active material layer containing a negative electrode active material mainly containing silicon and silicon oxide. In the negative electrode, the ratio of the film thickness of the negative electrode active material layer to the particle size distribution D99 is in the range of 1.2 to 2.0, the value of the D99 is in the range of 7 to 27 μm, and the negative electrode active material layer has a density ranging from 1.2 to 1.6 g/cm | 10-03-2013 |
20130280609 | Alloys Of Clathrate Allotropes For Rechargeable Batteries - The present disclosure is directed at an electrode for a battery wherein the electrode comprises clathrate alloys of silicon, germanium or tin. In method form, the present disclosure is directed at methods of forming clathrate alloys of silicon, germanium or tin which methods lead to the formation of empty cage structures suitable for use as electrodes in rechargeable type batteries. | 10-24-2013 |
20130309573 | LITHIUM ION SECONDARY BATTERY - The present invention intends to provide a lithium ion secondary battery that has a high capacity and excellent charge/discharge cycle characteristics. A lithium ion secondary battery includes: a positive electrode; and a negative electrode, wherein the negative electrode includes a negative electrode active material of which initial charge capacity is 1800 mAh/g or more and initial efficiency (initial discharge capacity/initial charge capacity) is 0.70 to 0.85, the positive electrode includes a positive electrode active material of which initial charge capacity is 160 mAh/g or more and initial efficiency (initial discharge capacity/initial charge capacity) is 0.75 to 0.90, and an initial discharge capacity ratio of the negative electrode and the positive electrode (initial discharge capacity of the negative electrode/initial discharge capacity of the positive electrode) is 0.90 to 1.30. | 11-21-2013 |
20130316237 | COMPOSITE ACTIVE MATERIAL, METHOD FOR PRODUCING COMPOSITE ACTIVE MATERIAL, AND BATTERY - The problem of the present invention is to provide a composite active material, which may restrain cracking and peeling of a coating layer, when the composite active material having an active material and the coating layer for coating the surface thereof is kneaded. The present invention solves the above-mentioned problem by providing a composite active material including an active material and a coating layer for coating the surface of the above-mentioned active material, in which microparticles are disposed on the surface thereof, characterized in that the above-mentioned microparticles have a smaller particle diameter than the particle diameter of the active material, and contain Si. | 11-28-2013 |
20130323594 | METHOD OF PRODUCING HIGH PURITY SiOx NANOPARTICLES WITH EXCELLENT VOLATILITY AND APPARATUS FOR PRODUCING THE SAME - The present disclosure provides a method of producing high purity SiOx nanoparticles with excellent volatility and an apparatus for producing the same, which enables mass production of SiOx nanoparticles by melting silicon through induction heating and injecting gas to a surface of the molten silicon. The apparatus includes a vacuum chamber, a graphite crucible into which raw silicon is charged, the graphite crucible being mounted inside the vacuum chamber, an induction melting part which forms molten silicon by induction heating of the silicon material received in the graphite crucible, a gas injector which injects a gas into the graphite crucible to be brought into direct contact with a surface of the molten silicon, and a collector disposed above the graphite crucible and collecting SiOx vapor produced by reaction between the molten silicon and the injected gas. | 12-05-2013 |
20130337325 | ANODE INCLUDING SILICON-BASED MATERIAL AND CARBON MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Provided is an anode including an anode active material including SiO | 12-19-2013 |
20140030595 | LITHIUM-ION SECONDARY BATTERY - The lithium-ion secondary battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. A positive electrode material mixture layer of the positive electrode has a volume density Vc of 62 vol. % or more and a capacity per unit area of 2 mAh/cm | 01-30-2014 |
20140038050 | SILICON-CONTAINING PARTICLES, NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF MANUFACTURING SILICON-CONTAINING PARTICLES - The present invention intends to provide silicon-containing particles that, when used as a negative electrode active material for a nonaqueous electrolyte secondary battery, can form a nonaqueous electrolyte secondary battery that is less in volume change during charge/discharge and has high initial efficiency and excellent cycle characteristics. The present invention provides silicon-containing particles that are used as a negative electrode active material for a nonaqueous electrolyte secondary battery and have a diffraction line with a peak at 2θ=28.6° in X-ray diffractometry, a negative electrode material for a nonaqueous electrolyte secondary battery therewith, a nonaqueous electrolyte secondary battery, and a method of manufacturing the silicon-containing particles. | 02-06-2014 |
20140106219 | Synthesis of Micro-Sized Interconnected Si-C Composites - Embodiments provide a method of producing micro-sized Si—C composites or doped Si—C and Si alloy-C with interconnected nanoscle Si and C building blocks through converting commercially available SiO | 04-17-2014 |
20140106220 | PHASE SEPARATED SILICON-TIN COMPOSITE AS NEGATIVE ELECTRODE MATERIAL FOR LITHIUM-ION AND LITHIUM SULFUR BATTERIES - A composite of silicon and tin is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery or a lithium-sulfur battery. This negative electrode material is formed such that the silicon is present as a distinct amorphous phase in a matrix phase of crystalline tin. While the tin phase provides electron conductivity, both phases accommodate the insertion and extraction of lithium in the operation of the cell and both phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. In general, roughly equal atomic proportions of the tin and silicon are used in forming the phase separated composite electrode material. | 04-17-2014 |
20140106221 | SILICON OXIDE FOR ANODE ACTIVE MATERIAL OF SECONDARY BATTERY - Provided is silicon oxide for an anode active material of a secondary battery. More particularly, the present invention provides silicon oxide included in an anode active material of a secondary battery, wherein a ratio of a maximum height (h | 04-17-2014 |
20140141330 | METHOD OF PRODUCING SILICON-CONTAINING COMPOSITION, ANODE MATERIAL AND METHOD OF PRODUCING ANODE ELECTRODE OF LITHIUM-ION BATTERY - Provided is a method of producing a silicon-containing composition in mass production, comprising steps of: slicing a silicon substrate with a free-abrasive wire to obtain a mixing slurry; separating the mixing slurry into a liquid mixture and a solid mixture; and sorting the solid mixture by particle size and removing the cutting wire granules from the solid mixture, so as to obtain the silicon-containing composition applicable for a lithium-ion battery. Furthermore, an anode material of a lithium-ion battery and a method of producing an anode electrode of a lithium-ion battery are provided. According to the method, a few abrasives of the wire sawing tool remain in the nano-scale or micro-scale silicon-containing composition, and thus the problems of extreme volumetric expansion under heat and high production cost are overcome. The produced silicon-containing composition is applicable for a lithium-ion battery. | 05-22-2014 |
20140147748 | NEGATIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY - A lithium secondary battery negative electrode material | 05-29-2014 |
20140154574 | NEGATIVE ELECTRODE ACTIVE SUBSTANCE AND LITHIUM BATTERY - A negative electrode active substance for lithium battery is an oxide containing Re at least. | 06-05-2014 |
20140162123 | SILICON OXIDE MATERIAL, MAKING METHOD, NEGATIVE ELECTRODE, LITHIUM ION SECONDARY BATTERY, AND ELECTROCHEMICAL CAPACITOR - A silicon oxide material having a cobalt content of 2-200 ppm is provided. A negative electrode is formed using the silicon oxide material as active material. A nonaqueous electrolyte secondary battery constructed using the negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. | 06-12-2014 |
20140193713 | PASSIVATION OF ELECTRODES IN ELECTROCHEMICAL CELLS - Electrochemical cells having desirable electronic and ionic conductivities, and associated systems and methods, are generally described. | 07-10-2014 |
20140199594 | ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - An anode active material for a lithium secondary battery having high-capacity and high-efficient charge/discharge characteristics. The anode active material includes silicon single phases; and silicon-metal alloy phases surrounding the silicon single phases. A dopant is distributed in the anode active material, and the silicon single phases are formed through rapid-cooling solidification, and the silicon single phases have a fine microstructure due to the dopant. | 07-17-2014 |
20140242462 | CORROSION RESISTANCE METALLIC COMPONENTS FOR BATTERIES - Methods for coating a metal substrate with electrically conductive dots or splats of active materials for use in battery applications that improve the corrosion resistant metallic component electrode activity, or electrical conductivity of those components at reduced or lower costs. | 08-28-2014 |
20140248538 | SILICON OXIDE AND METHOD OF PREPARING THE SAME - The present invention relates to a method of preparing silicon oxide, in which the amounts of silicon and oxygen are appropriately controlled by decreasing the amount of the oxygen from silicon oxide containing a relatively large amount of oxygen, silicon oxide prepared by the method, and a secondary battery including the same. According to the method of preparing silicon oxide, silicon oxide (first silicon oxide) including a relatively large amount of oxygen is heat treated in a reducing atmosphere to decrease the amount of the oxygen in the silicon oxide (first silicon oxide) and to prepare silicon oxide (second silicon oxide) including silicon and oxygen in an appropriate amount (Si:SiO | 09-04-2014 |
20140248539 | ETCHED SILICON STRUCTURES, METHOD OF FORMING ETCHED SILICON STRUCTURES AND USES THEREOF - A method of etching silicon, the method comprising the steps of: partially covering at least one silicon surface of a material to be etched with copper metal; and exposing the at least one surface to an aqueous etching composition comprising an oxidant and a source of fluoride ions. | 09-04-2014 |
20140272576 | METHODS AND APPARATUS FOR HIGH CAPACITY ANODES FOR LITHIUM BATTERIES - An electrode is provided for an electrochemical lithium battery cell. The electrode includes a bulk material that has a plurality of voids dispersed substantially throughout the bulk material. The bulk material is silicon. Numerous other aspects are provided. | 09-18-2014 |
20140272577 | METHODS AND APPARATUS FOR HIGH CAPACITY ANODES FOR LITHIUM BATTERIES - An electrode is provided for an electrochemical lithium battery cell. The electrode includes multiple silicon sheets, each silicon sheet including multiple apertures, each aperture extending all or partly through a thickness of the silicon sheet. Numerous other aspects are provided. | 09-18-2014 |
20140272578 | POROUS, AMORPHOUS LITHIUM STORAGE MATERIALS AND A METHOD FOR MAKING THE SAME - Porous, amorphous lithium storage materials and a method for making these materials are disclosed herein. In an example of the method, composite particles of a lithium storage material in an amorphous phase and a material that is immiscible with the lithium storage material are prepared. Phase separation is induced within the composite particles to precipitate out the amorphous phase lithium storage material and form phase separated composite particles. The immiscible material is chemically etched from the phase separated composite particles to form porous, amorphous lithium storage material particles. | 09-18-2014 |
20140272579 | Complexometric Precursor Formulation Methodology for Industrial Production of Fine and Ultrafine Powders and Nanopowders for Lithium Metal Oxides for Battery Applications - A compound M | 09-18-2014 |
20140272580 | Complexometric Precursor Formulation Methodology For Industrial Production Of Fine And Ultrafine Powders And Nanopowders Of Layered Lithium Mixed metal Oxides For Battery Applications - A battery with improved properties is provided. The battery has a cathode material prepared by the complexometric formulation methodology comprising M | 09-18-2014 |
20140272581 | HIGH ENERGY MATERIALS FOR A BATTERY AND METHODS FOR MAKING AND USE - A method of forming an electrode active material by reacting a metal fluoride and a reactant. The reactant can be a metal oxide, metal phosphate, metal fluoride, or a precursors expected to decompose to oxides. The method includes a milling step and an annealing step. The method can alternately include a solution coating step. Also included is the composition formed following the method. | 09-18-2014 |
20140272582 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY HAVING RARE EARTH HYDROXIDE AND/OR OXYHYDROXIDE - In a non-aqueous electrolyte secondary battery including a positive electrode | 09-18-2014 |
20140295268 | LAYERED TITANIUM DISILICIDE, METHOD OF PREPARATION AND APPLICATIONS THEREOF - The invention generally relates to new materials based on C49 titanium disilicide (TiSi | 10-02-2014 |
20140295269 | CONFORMAL COATING OF NANO-POROUS MATERIAL WITH GROUP IV SEMICONDUCTOR USING NANOPARTICLE INK - A nanostructured composite material includes a substrate, a porous layer including a highly structured material, and a coating including nanoparticles. A method for forming the nanostructured composite material can include forming a porous layer on a substrate, the porous layer including a highly structured material, and applying nanoparticles to the porous layer to form the nanostructured composite material. | 10-02-2014 |
20140295270 | 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 | 10-02-2014 |
20140302391 | Clathrate Allotropes For Rechargeable Batteries - The present disclosure is directed at clathrate (Type I) allotropes of silicon, germanium and tin. In method form, the present disclosure is directed at methods for forming clathrate allotropes of silicon, germanium or tin which methods lead to the formation of empty cage structures suitable for use as electrodes in rechargeable type batteries. | 10-09-2014 |
20140322601 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHUM SECONDARY BATTERY COMPRISING THE SAME - The anode active material of the present invention comprises silicon-based particles obtained from at least one of silicon, a silicon oxide and a silicon alloy, and the silicon-based particles have a faceted shape, thereby providing high capacity and good life characteristics without causing any deterioration which has been generated in the use of conventional silicon-based particles, and eventually providing a lithium secondary battery having such characteristics. | 10-30-2014 |
20140335411 | ETCHED SILICON STRUCTURES, METHOD OF FORMING ETCHED SILICON STRUCTURES AND USES THEREOF - A method of etching silicon, the method comprising the steps of: electrolessly depositing a first metal onto a silicon surface to be etched, wherein the electrolessly deposited first metal partially covers the surface of the silicon to be etched; depositing a second metal that is different from the first metal over the silicon surface and the electrolessly deposited first metal, wherein a film of the deposited second metal covers the silicon surface to be etched; removing the first metal and the second metal from regions of the film of the deposited second metal that overlie the first metal to leave the second metal partially covering the silicon surface to be etched; and etching the silicon by exposing the silicon surface to an aqueous etching composition comprising an oxidant and a source of fluoride ions. | 11-13-2014 |
20140335412 | PROCESS FOR FABRICATING NANOWIRE ARRAYS - A process is provided for etching a silicon-containing substrate to form nanowire arrays. In this process, one deposits nanoparticles and a metal film onto the substrate in such a way that the metal is present and touches silicon where etching is desired and is blocked from touching silicon or not present elsewhere. One submerges the metallized substrate into an etchant aqueous solution comprising HF and an oxidizing agent. In this way arrays of nanowires with controlled diameter and length are produced. | 11-13-2014 |
20140342227 | LITHIUM-SULPHUR CELL CATHODE WITH A LAYER SYSTEM - A cathode for a lithium-sulphur cell includes a current collector. A cathode layer system is applied to the current collector in order to achieve a high energy density, current rate and cycle stability. This layer system includes at least one conductive layer and at least one layer that contains sulphur. The at least one conductive layer is in electrical contact with the current collector. | 11-20-2014 |
20140370385 | ELECTRODE, METHOD FOR PRODUCING AN ELECTRODE AND ENERGY STORE HAVING AN ELECTRODE - A method for producing an electrode with an electrically conductive main body on which an active material having a silicon nano-structure is arranged includes introducing a precursor mixture having a silicon-containing material and a basic matrix into a spinning unit and arranging the main body at a defined distance from a discharge device of the spinning unit. At least part of the precursor mixture from the discharge device is discharged. An electrical voltage is applied between at least one part of the spinning unit and the main body for laminating a silicon-containing nano-structure on the main body. The silicon-containing nano-structure is then tempered. The method produces an electrode with an especially high capacity coupled with good cycle resistance. An energy store includes the electrode. | 12-18-2014 |
20140377653 | POROUS SILICON BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - The present invention relates to a method of preparing a porous silicon-based negative electrode active material comprising: mixing a porous silica (SiO | 12-25-2014 |
20140377654 | NEGATIVE ELECTRODE INCLUDING GROUP 14 METAL/METALLOID NANOTUBES, LITHIUM BATTERY INCLUDING THE NEGATIVE ELECTRODE, AND METHOD OF MANUFACTURING THE NEGATIVE ELECTRODE - A negative electrode and a lithium battery including the same, the negative electrode including nanotubes including a Group 14 metal/metalloid, disposed on a conductive substrate. | 12-25-2014 |
20150030924 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - [Object] To provide a positive electrode for a nonaqueous electrolyte secondary battery with which characteristics of the nonaqueous electrolyte secondary battery, such as a charge/discharge efficiency, a capacity retention ratio, and a discharge capacity retention ratio are not easily degraded even in the case where the nonaqueous electrolyte secondary battery is continuously charged at a high temperature. | 01-29-2015 |
20150050556 | ETCHED SILICON STRUCTURES, METHOD OF FORMING ETCHED SILICON STRUCTURES AND USES THEREOF - A method of etching silicon of a material comprising silicon, the method comprising the steps of partially covering a silicon surface of the material comprising silicon with an elemental metal and then carrying out a metal-assisted chemical etching of the silicon by exposing the partially covered silicon surface to an etching composition, wherein at least some of the elemental metal for the metal-assisted chemical etching is formed by either: (a) exposing the silicon surface to a composition comprising metal ions, wherein the elemental metal forms by reduction of the metal ions and wherein the composition comprising metal ions is substantially free of HF, or (b) depositing the elemental metal directly onto the silicon surface. | 02-19-2015 |
20150056507 | LITHIUM-BASED BATTERY ELECTRODES - An example of a positive electrode includes sulfur based active material particles, a carbon coating encapsulating the sulfur based active material particles, and a structure coating formed on a surface of the carbon coating. The structure coating is selected from the group consisting of a metal oxide composite structure, a mixed carbon and metal oxide composite structure, and a polymeric structure coating. | 02-26-2015 |
20150072235 | POWDER MANUFACTURING APPARATUS AND ANODE ACTIVE MATERIAL FOR SECONDARY BATTERY MANUFACTURED BY THE APPARATUS - Provided is an apparatus for manufacturing a powder alloy used as an anode active material of a secondary battery. The apparatus includes a nozzle unit for melting and spraying an alloy, a cooling unit for cooling down the alloy sprayed from the nozzle unit, a grinding unit for grinding the alloy cooled by the cooling unit, and a first chamber accommodating the nozzle unit, the cooling unit, and the grinding unit, and maintained to be a vacuum state. | 03-12-2015 |
20150086870 | ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An electrode material for nonaqueous electrolyte secondary battery of an embodiment includes a silicon nanoparticle, and a coating layer coating the silicon nanoparticle. The coating layer includes an amorphous silicon oxide and a silicon carbide phase. At least a part of the silicon carbide phase exists on a surface of the silicon nanoparticle. | 03-26-2015 |
20150099172 | SYNTHESIS OF METAL NANOPARTICLES - Methods for synthesizing metal nanoparticles and the nanoparticles so produced are provided. The methods include addition of surfactant to a novel reagent complex between zero-valent metal and a hydride. The nanoparticles produced by the method include oxide-free, zero-valent tin nanoparticles useful in fabricating a battery electrode. | 04-09-2015 |
20150099173 | METHOD FOR MASS PRODUCTION OF SILICON NANOWIRES AND/OR NANOBELTS, AND LITHIUM BATTERIES AND ANODES USING THE SILICON NANOWIRES AND/OR NANOBELTS - This invention provides a method for mass production of silicon nanowires and/or nanobelts. The invented method is a chemical etching process employing an etchant that preferentially etches and removes other phases from a multiphase silicon alloy, over a silicon phase, and allows harvesting of the residual silicon nanowires and/or nanobelts. The silicon alloy comprises, or is treated so as to comprise, one-dimensional and/or two-dimensional silicon nanostructures in the microstructure of the multi-phase silicon alloy prior to etching. When used as anode for secondary lithium batteries, the silicon nanowires or nanobelts produced by the invented method exhibit high storage capacity. | 04-09-2015 |
20150099174 | Silicon Monoxide Composite Negative Electrode Material used for Lithium Ion Battery, the Preparation Method Thereof and a Lithium Ion Battery - The present invention relates to a silicon monoxide composite negative electrode material, which comprises silicon monoxide substrate. Nano-Silicon material uniformly deposited on the silicon monoxide substrate and nanoscale conductive material coating layer on the surface of the silicon monoxide/Nano-Silicon. The preparation method of the silicon monoxide composite negative electrode material includes Nano-Silicon chemistry vapour deposition, nanoscale conductive material coating modification, screening and demagnetizing. The silicon monoxide composite negative electrode material has properties of high specific capacity (>1600 mAh/g), high charge-discharge efficiency of the first cycle (>80%) and high conductivity. | 04-09-2015 |
20150104705 | METHOD OF FORMING SILICON - A method of forming a particulate material comprising silicon, the method comprising the step of reducing a particulate starting material comprising silica-containing particles having an aspect ratio of at least 3:1 and a smallest dimension of less than 15 microns, or reducing a particulate starting material comprising silica-containing particles comprising a plurality of elongate structural elements, each elongate structural element having an aspect ratio of at least 3:1 and a smallest dimension of less than 15 microns. | 04-16-2015 |
20150111102 | NEGATIVE ACTIVE MATERIAL, NEGATIVE ELECTRODE INCLUDING THE NEGATIVE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE NEGATIVE ELECTRODE - A negative active material including graphite; silicon nanowires; and silicon nanoparticles, wherein a silicon nanowire of the silicon nanowires and a silicon nanoparticle of the silicon nanoparticles are each disposed on a particle of the graphite to form a composite with the graphite. | 04-23-2015 |
20150111103 | NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY - Provided are an anode active material for lithium ion rechargeable batteries and an anode, which are capable, when used in a lithium ion rechargeable battery, of providing excellent charge/discharge capacity and cycle characteristics, and also high rate performance, as well as a lithium ion rechargeable battery using the same. The anode active material contains particles having a crystal phase represented by RAx, wherein R is at least one element selected from the group consisting of rare earth elements including Sc and Y but excluding La, A is Si and/or Ge, and x satisfies 1.0≦x≦2.0, and a crystal phase consisting of A. The material is thus useful as an anode material for lithium ion rechargeable batteries. | 04-23-2015 |
20150132648 | ELECTRODE MEMBER, SECONDARY BATTERY, AND METHOD FOR MANUFACTURING ELECTRODE MEMBER - To inhibit degradation of charge and discharge cycle characteristics of a secondary battery. To suppress generation of defects due to expansion and contraction of an active material in a negative electrode. To inhibit deterioration of an electrode due to changes in its form. An electrode member including a current collector, an active material, and a porous body is used. The porous body is in contact with one surface of the current collector and includes a plurality of spaces. The active material is located in the space in the porous body. The space has a larger size than the active material. | 05-14-2015 |
20150132649 | NEGATIVE ELECTRODE FOR POWER STORAGE DEVICE, POWER STORAGE DEVICE, AND ELECTRICAL DEVICE - A power storage device having high capacitance is provided. A power storage device with excellent cycle characteristics is provided. A power storage device with high charge and discharge efficiency is provided. A power storage device including a negative electrode with low resistance is provided. A negative electrode for the power storage device includes a current collector and an active material layer including a plurality of active material particles over the current collector. The active material particle is silicon, and the size of the silicon particle is greater than or equal to 0.001 μm and less than or equal to 7 μm. | 05-14-2015 |
20150140426 | METHOD FOR PREPARING SILICON-BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY CONTAINING SAME - The present invention relates to a method for preparing a silicon-based negative electrode active material, a negative electrode active material for a lithium secondary battery, and a lithium secondary battery comprising the same. More particularly, the method for preparing the silicon-based negative electrode active material comprises: preparing a porous silica (SiO | 05-21-2015 |
20150140427 | Nanoporous Silicon Network Thin Films as Anodes for Lithium Ion Batteries - Various embodiments of the invention describe nanoporous silicon (Si) network thin films with controllable porosity and thickness that are fabricated by a robust and scalable electrochemical process, and then released from Si wafers and transferred to flexible and conductive substrates. These nanoporous Si network thin films serve as high performance Li-ion battery electrodes, with an initial discharge capacity of 2570 mA h g | 05-21-2015 |
20150295235 | ANODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND LITHIUM SECONDARY BATTERY INCLUDING THE ANODE ACTIVE MATERIAL - An anode active material including a porous silicon having pores with a uniform average pore diameter, wherein the average pore diameter of the pores is in a range of about 50 nm to about 80 nm, a method of preparing the anode active material, and a lithium secondary battery including an anode including the anode active material. | 10-15-2015 |
20150303449 | METHOD FOR MANUFACTURING OF METAL OXIDE NANOPARTICLES AND METAL OXIDE NANOPARTICLES THEREBY - The present invention relates to a method for preparing metal oxide nanoparticles and metal oxide nanoparticles prepared thereby, and more particularly, to an method for preparing metal oxide nanoparticles, the method including: dipping a cathode and an anode formed of a metal for forming oxide, in an inorganic electrolyte solution containing halogen salt (step 1); and applying voltage to the anode and the cathode to form, on the anode, metal oxide forming an anode surface (step 2). According to a method for preparing metal oxide nanoparticles of the present invention, disadvantages of typical nanoparticle synthesizing methods may be solved to cheaply and rapidly manufacture nanoparticles having various structures through a simple and single process without using a surfactant. Since an anodizing method requires only a power supply device having a low voltage of 30 V or less and an electrolyte, and is performed at room temperature, the anodizing method does not require an additional device or installation. Also, from just after the power supply device is turned on, metal oxide nanoparticles may be rapidly formed, nanoparticles having excellent crystallinity may be produced, and factors of the anodizing method, such as voltage, temperature, an electrolyte, and an electrolyte concentration may be changed to simply adjust a shape of the nanoparticles. Therefore, the present technology is expected to improve economical efficiency of the metal oxide nanoparticles to also contribute to the mass production of the metal oxide nanoparticles. | 10-22-2015 |
20150303459 | TIN BASED ANODE MATERIAL FOR A RECHARGEABLE BATTERY AND PREPARATION METHOD - A tin based anode material for a rechargeable battery comprises nanoparticles of composition SnM | 10-22-2015 |
20150357640 | ENERGY STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME - Provided are an energy storage device including an electrode in which lithium is introduced into a silicon layer and a method for manufacturing the energy storage device. A silicon layer is formed over a current collector, a solution including lithium is applied on the silicon layer, and heat treatment is performed thereon; thus, at least lithium can be introduced into the silicon layer. By using the solution including lithium, even when the silicon layer includes a plurality of silicon microparticles, the solution including lithium can enter a space between the microparticles and lithium can be introduced into the silicon microparticles which are in contact with the solution including lithium. Moreover, even when the silicon layer is a thin silicon film or includes a plurality of whiskers or whisker groups, the solution can be uniformly applied; accordingly, lithium can be included in silicon easily. | 12-10-2015 |
20150380735 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The invention provides a nonaqueous electrolyte secondary battery having a large battery capacity and excellent charge/discharge cycle characteristics. The nonaqueous electrolyte secondary battery includes a negative electrode including a particulate negative electrode active material ( | 12-31-2015 |
20160006022 | NEGATIVE-ELECTRODE ACTIVE MATERIAL, PRODUCTION PROCESS FOR THE SAME AND ELECTRIC STORAGE APPARATUS - A negative-electrode active material is used, the negative-electrode active material including: a nanometer-size silicon material produced by heat treating a lamellar polysilane having a structure in which multiple six-membered rings constituted of a silicon atom are disposed one after another, and expressed by a compositional formula, (SiH) | 01-07-2016 |
20160028085 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD OF PREPARING THE SAME - Provided are an anode active material for a lithium secondary battery including a silicon-based composite formed of silicon (Si) and crystalline SiO | 01-28-2016 |
20160036052 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode having a negative active material, and a non-aqueous electrolyte, characterized in that the negative active material contains composite particle (C), which has silicon-containing particle (A) and electronic conductive additive (B), the silicon-containing particle (A) has a content of carbon, and when measured at a temperature rising rate of 10±2° C./min by thermogravimetry, said composite particle (C) exhibits two stages of weight loss in the range of 30 to 1000° C. | 02-04-2016 |
20160072127 | LITHIUM SECONDARY BATTERY NEGATIVE ELECTRODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING SAME - Problem: To provide a lithium secondary battery negative electrode active material consisting of a Sn—Sb based sulfide that delivers a high electrode capacity density, excellent output characteristics, and excellent cycle life characteristics and also provide a method for manufacturing the lithium secondary battery negative electrode active material, said method being capable of easily manufacturing the high performance lithium secondary battery negative electrode active material at low cost without requiring a high-temperature processing step and special facilities as required in a glass melting method. | 03-10-2016 |
20160079596 | LITHIUM-ION SECONDARY BATTERY AND METHOD OF MANUFACTURINGTHE SAME - A lithium-ion secondary battery includes a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode includes a positive active material layer. The negative electrode includes a negative active material layer. The positive active material layer contains a positive active material and an inorganic phosphate compound. A BET specific surface area of the positive active material is 0.3 m | 03-17-2016 |
20160087270 | NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND SECONDARY BATTERY - The present invention relates to a negative electrode material for nonaqueous electrolyte secondary batteries, which is composed of a silicon composite body that has a structure wherein microcrystals or fine particles of silicon are dispersed in a substance having a composition different from that of the microcrystals or fine particles, said silicon composite body having a crystallite size of the microcrystals or fine particles of 8.0 nm or less as calculated using Scherrer's equation on the basis of the half width of the diffraction peak belonging to Si(220) in an X-ray diffraction. The present invention is able to provide a negative electrode material for nonaqueous electrolyte secondary batteries, which has excellent coulombic efficiency, and a nonaqueous electrolyte secondary battery. | 03-24-2016 |
20160104882 | NANOCOMPOSITE BATTERY ELECTRODE PARTICLES WITH CHANGING PROPERTIES - Battery electrode compositions and methods of fabrication are provided that utilize composite particles. Each of the composite particles may comprise, for example, a high-capacity active material and a porous, electrically-conductive scaffolding matrix material. The active material may store and release ions during battery operation, and may exhibit (i) a specific capacity of at least 220 mAh/g as a cathode active material or (ii) a specific capacity of at least 400 mAh/g as an anode active material. The active material may be disposed in the pores of the scaffolding matrix material. According to various designs, each composite particle may exhibit at least one material property that changes from the center to the perimeter of the scaffolding matrix material. | 04-14-2016 |
20160111711 | SILICON-CONTAINED MATERIAL, NEGATIVE ELECTRODE FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF PRODUCING THE SAME, NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF PRODUCING THE SAME - A silicon-contained material capable of being doped with lithium and de-doped, wherein when a three-electrode cell produced by using a working electrode including the silicon-contained material as an active material, a reference electrode made of metallic lithium, a counter electrode made of metallic lithium, and an electrolyte having lithium ionic conductivity is charged and discharged to graph a relationship between a derivative of a charging or discharging capacity with respect to an electric potential of the working electrode on the basis of the reference electrode and the electric potential, a ratio B/A is 2 or less while current flows in a direction in which the lithium of the silicon-contained material is de-doped in the discharge, A being the derivative maximum value with respect to a potential range from 260 to 320 mV, and B is the derivative maximum value with respect to a potential range from 420 to 520 mV. | 04-21-2016 |
20160118660 | POSITIVE ELECTRODE MIXTURE AND ALL-SOLID-STATE LITHIUM SULFUR CELL - The present invention aims to maximize the advantageous physical properties of sulfur and provide a cathode mixture that can be suitably used in a cathode mixture layer of an all-solid-state lithium sulfur battery exhibiting excellent charge/discharge capacity. The present invention also aims to provide an all-solid-state lithium sulfur battery including a cathode mixture layer containing the cathode mixture. The present invention provides a cathode mixture for use in a cathode mixture layer of an all-solid-state lithium sulfur battery, the cathode mixture containing: (A) an ion-conductive material containing phosphorus at a weight ratio of 0.2 to 0.55; (B) sulfur and/or its discharge product (B); and (C) a conductive material, the amount of the component (B) being 40% by weight or more of the total amount of the components (A), (B), and (C). | 04-28-2016 |
20160141605 | TRANSITION METAL HYDROXY-ANION ELECTRODE MATERIALS FOR LITHIUM-ION BATTERY CATHODES - A transition metal hydroxy-anion electrode material for lithium-ion battery cathodes includes the charge-neutral structure M | 05-19-2016 |
20160141610 | Submicron Sized Silicon Powder with Low Oxygen Content - A submicron sized Si based powder having an average primary particle size between 20 nm and 200 nm, wherein the powder has a surface layer comprising SiO | 05-19-2016 |
20160141612 | ANODES COMPRISING GERMANIUM FOR LITHIUM-ION DEVICES - An anode material for a lithium ion device includes an active material including germanium and boron. The weight percentage of the germanium is between about 45 to 80 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to 20 weight % of the total weight of the anode material. The active material may include carbon at a weight percentage of between 0.5 to about 5 weight % of the total weight of the anode material. Additional materials, methods of making and devices are taught. | 05-19-2016 |
20160149206 | METHODS FOR FORMING ELECTRODE MATERIALS FOR LITHIUM-BASED BATTERIES - In an example of the method disclosed herein, a precipitate is formed in an aqueous mixture by mixing an SiO | 05-26-2016 |
20160156031 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE ANODE ACTIVE MATERIAL | 06-02-2016 |
20160164085 | METHOD FOR SIZE-REDUCTION OF SILICON AND USE OF THE SIZE-REDUCED SILICON IN A LITHIUM-ION BATTERY - The invention relates to a method for size-reducing silicon, wherein a mixture containing a suspension containing silicon to be size-reduced and silicon grinding media is set in motion in the grinding space of a grinding media mill. The size-reduced silicon is used as the active material in the anode of a lithium-ion battery. | 06-09-2016 |
20160164104 | ELECTRODE MATERIAL AND SECONDARY CELL - An electrode material for a secondary cell includes a porous carbon material having an absolute value of a differential value of a mass using a temperature as a parameter exceeding 0 at 360° C. and being 0.016 or more at 290° C. provided by thermally analyzing a mixture of the porous carbon material and S | 06-09-2016 |
20160181601 | COMPOSITE PARTICLES, METHOD FOR MANUFACTURING SAME, ELECTRODE, AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL | 06-23-2016 |
20160190560 | NEGATIVE ELECTRODE ACTIVE MATERIAL, AND NEGATIVE ELECTRODE AND LITHIUM ION SECONDARY BATTERY USING THE NEGATIVE ELECTRODE ACTIVE MATERIAL - A negative electrode active material with sufficiently high discharge capacity at a high rate, and a negative electrode and a lithium ion secondary battery using the negative electrode active material. A negative electrode active material according to the invention includes a negative electrode active material particle containing silicon and silicon oxide, wherein a surface layer part of the negative electrode active material particle is a layer with lower density than a core part of the negative electrode active material particle. With such a structure of the negative electrode active material, the sufficiently high discharge capacity at a high rate can be obtained. | 06-30-2016 |
20160190570 | ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, COMPOSITION FOR ANODE INCLUDING SAME, AND LITHIUM SECONDARY BATTERY - Provided are an anode active material for a lithium secondary battery, and an anode composition and a lithium secondary battery including the anode active material. Silicon secondary particles, in which amorphous silicon primary particles and crystalline silicon primary particles are agglomerated, are used as an anode active material. The structural characteristics and internal pores of the silicon secondary particles act as a buffer for a volumetric change of particles, leading to a decrease in the volumetric expansion of an active material during charging and discharging. Accordingly, pulverization of silicon particles may be prevented, and ultimately, even when a charge and discharge cycle is repeatedly performed, the capacity is maintained, and thus, cycle lifespan characteristics are substantially improved. | 06-30-2016 |
20160190596 | COMPOSITE ANODE ACTIVE MATERIAL, PREPARING METHOD THEREOF, ANODE INCLUDING THE COMPOSITE ANODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE ANODE - A composite anode active material includes a first core member including a silicon-containing material; a second core member including at least one selected from metal nitride and metal carbide; and a coating layer on at least one of the first core member and the second core member. The coating layer contains metal silicide. | 06-30-2016 |
20160190597 | COMPOSITE ANODE ACTIVE MATERIAL, ANODE INCLUDING THE COMPOSITE ANODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE ANODE - A composite anode active material includes a silicon-based material, a metal fluoride, and a carbon-based material. The metal fluoride may be a compound represented by the following formula: MFx, where M is at least one selected from magnesium (Mg), aluminum (Al), titanium (Ti), copper (Cu), zinc (Zn), barium (Ba) and bismuth (Bi), and 006-30-2016 | |
20160204416 | Nanocubic Co3O4/Few-Layer Graphene Composites and Related Anode Components | 07-14-2016 |
20160204431 | NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES | 07-14-2016 |
20160254535 | Electrodes incorporating composites of graphene and selenium-sulfur compounds for improved rechargeable lithium batteries | 09-01-2016 |
20190148713 | METHODS OF PREPARING ANODES USING TIN AS ACTIVE MATERIAL | 05-16-2019 |
20190148722 | METHODS FOR PREPARING ANODES FROM ANODE ACTIVE MATERIAL PARTICLES WITH LITHIUM BORATES AND PHOSPHATES COATINGS | 05-16-2019 |
20220140327 | NEGATIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY - Provided is a negative electrode material for a secondary battery. The negative electrode material for a secondary battery contains: a matrix containing a silicon oxide, a complex oxide of one or more doping elements selected from the group consisting of an alkali metal, an alkaline earth metal and a post-transition metal, and silicon, or a mixture thereof; and silicon nanoparticles dispersed and impregnated in the matrix, wherein the negative electrode material for a secondary battery satisfies the following Equation: 105-05-2022 | |