Entries |
Document | Title | Date |
20080199781 | METHOD OF PRODUCING AN ELECTROCHEMICAL CELL AND ARTICLES PRODUCED THEREFROM - A method of producing an electrode assembly comprises positioning a first adhesive between a first surface of a first electrode layer having a width W | 08-21-2008 |
20080206645 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME - Provided is a non-aqueous electrolyte battery with excellent volume energy density and high safety. The battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. Between the positive and negative electrodes is interposed a microporous layer including insulating inorganic particles and a polyolefin. It is preferable that the microporous layer has a thickness of 1 to 10 μm, the polyolefin is polyethylene having a weight-average molecular weight of 500000 or greater, and the insulating inorganic particles have an average particle size of 0.1 to 2 μm. | 08-28-2008 |
20080206646 | ALKALINE SECONDARY BATTERY WITH SEPARATOR CONTAINING AROMATIC POLYAMIDE FIBER - An electrode assembly of an alkaline secondary battery includes positive and negative electrodes disposed to face each other via a separator sandwiched therebetween. The separator has a dual-layer structure composed of a main-fiber nonwoven layer and an aromatic-polyamide-fiber nonwoven layer that are laminated in the thickness direction. The main-fiber nonwoven layer contains nylon as main fiber and does not contain aromatic-polyamide-fiber. In the electrode assembly, the separator is so disposed that the aromatic-polyamide-fiber nonwoven fabric layer faces toward the negative electrode. | 08-28-2008 |
20080213671 | NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY - A negative electrode including a negative electrode current collector, first protrusions on a surface of the negative electrode current collector, a separation-stopping area on at least a part of a surface of each first protrusion, and a negative electrode active material layer including a negative electrode active material and formed on at least a top face of the first protrusion. This structure suppresses the separation of the negative electrode active material layer from the negative electrode current collector, the degradation of the current collecting ability, and the deformation of the negative electrode itself. A lithium ion secondary battery including this negative electrode has a high battery capacity, a high energy density, and an excellent charge/discharge cycle characteristic, and is capable of stably maintaining a high power over an extended period of time. | 09-04-2008 |
20080241697 | NON-AQUEOUS ELECTROLYTE BATTERY - In a non-aqueous electrolyte battery having a positive electrode ( | 10-02-2008 |
20080268344 | Pouch type secondary battery and fabrication method thereof - A pouch type secondary battery, in which a bent state of a cathode tap and an anode tap is maintained by eliminating a restoration phenomenon caused by an elastic force of the insulating tape when the cathode tap and the anode tap are bent by forming bending grooves on cathode and anode insulating tapes, includes: an electrode assembly which includes a cathode electrode plate where a cathode tap is connected, a anode electrode plate where an anode tap is connected, and a separator interposed between the cathode electrode plate and the anode electrode plate; a pouch containing the electrode assembly therein such that the cathode tap and the anode tap are exposed to the outside; a cathode insulation tape forming a first bending groove on at least one side portion and wrapped around the cathode tap so as to insulate a region where the cathode tap is in contact Ii with the pouch; and an anode insulation tape forming a second bending groove on at least one side portion and wrapped around the anode tap so as to insulate a region where the anode tap is in contact with the pouch. | 10-30-2008 |
20080292965 | RECHARGEABLE LITHIUM ION BATTERY AND METHOD FOR PRODUCING THE SAME - The present invention relates to a rechargeable lithium ion battery having an electrode plate with a high active material density and high electrolyte permeability. Upon producing the rechargeable lithium ion battery, hollow resin particles that can be collapsed by rolling are incorporated in a positive electrode mixture layer or a negative electrode mixture layer before the electrode mixture layer is rolled. The hollow resin particles are collapsed in the course of rolling the positive electrode mixture layer or the negative electrode mixture layer, so that the active material density can be easily increased. Further, the collapsed resin particles form unevenness on the surface of the electrode plate and also form open pores in the electrode plate, so that electrolyte permeability can be enhanced. As a result, the discharge capacity and rate characteristics of rechargeable lithium ion batteries can be increased. | 11-27-2008 |
20080292966 | ELECTRODE ASSEMBLY AND SECONDARY BATTERY USING THE SAME - An electrode assembly and a secondary battery including the same. The electrode assembly includes: a positive electrode plate including a positive electrode active material applied to a positive electrode collector; a negative electrode plate including a negative electrode active material applied to a negative electrode collector; a separator disposed between the positive electrode plate and the negative electrode plate; and a ceramic layer disposed on a portion of the positive or negative electrode plate, adjacent to an outer surface of the electrode assembly. The positive electrode plate, the negative electrode plate, ceramic layer, and the separator are wound together. The ceramic layer prevents a short-circuit between the positive electrode plate and the negative electrode plate, and extends along between about 40% and 90% of the length of the positive or negative electrode plate, from a winding end thereof. | 11-27-2008 |
20080292967 | Method and Device for Producing a Battery and Battery - A method and a device for manufacturing a battery having a plurality of electrodes, wherein the method includes the step of forming non-formed active material on each electrode. The invention is distinguished in that the electrodes and thereby initially non-formed active material are held under a mechanical pressure during the formation step in order to limit the volume change of the active material during this step. The invention also concerns a battery. | 11-27-2008 |
20080305398 | STACKED NONAQUEOUS ELECTROLYTE BATTERY, MANUFACTURING METHOD THEREOF AND STACKING APPARATUS THEREFOR - A stacked nonaqueous electrolyte battery, a method of manufacturing the battery, and a stacking apparatus for the battery are provided. The stacked nonaqueous electrolyte battery includes a plurality of electrode bodies alternately stacked, each of the electrode bodies including an anode and a cathode laminated through a separator. The separator has a raised edge portion leading along an edge portion of one of the anode and the cathode, and the raised edge portions of the plurality of the separators overlap one another. | 12-11-2008 |
20090004570 | Electrode for Non-Aqueous Electrolylte Secondary Battery, Method for Producing the Same, and Non-Aqueous Electrolyte Secondary Battery - An electrode for a non-aqueous electrolyte secondary battery including a current collector and an electrode material mixture layer formed on the current collector, and having a plurality of discontinuous slits through the current collector and the electrode material mixture layer. | 01-01-2009 |
20090023073 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a porous insulating layer, and nonaqueous electrolyte. The porous insulating layer is interposed between the positive electrode and the negative electrode. The nonaqueous electrolyte is contained at least in the porous insulating layer. The mixture layer of the positive electrode and the porous insulating layer each include a structure retainer. | 01-22-2009 |
20090029259 | BATTERY - A battery of this invention includes: a separator which is folded in a zigzag manner, thereby forming a layered structure having at least one first-electrode holding part and at least one second-electrode holding part which are alternately aligned; a first electrode accommodated in the first-electrode holding part; and a second electrode accommodated in the second-electrode holding part. At least one of the first electrode and the second electrode has at least one protruding part. The first electrode is connected to a first terminal, and the second electrode is connected to second terminal. | 01-29-2009 |
20090029260 | ELECTROCHEMICAL DEVICE AND METHOD OF MANUFACTURING THE SAME - An electrochemical device includes four or more electrodes which are laminated with separators provided between the respective electrodes, an electrolyte filled between the respective electrodes, and a sealing member which covers the periphery. The electrodes are arranged so that the polarities alternately change in the lamination direction, and each of the electrodes has projections projecting from diagonally opposite positions on the peripheral edge so that the positions of the projections of the electrodes of different polarities are opposite to each other in the lateral direction and the projections of the electrodes of the same polarity are aligned and connected with each other. | 01-29-2009 |
20090047580 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery is provided and includes a battery element in which a positive electrode having a positive electrode active material layer provided on a positive electrode collector and a negative electrode having a negative electrode active material layer provided on a negative electrode collector are stacked via a separator, and an edge of the negative electrode is disposed so as to protrude along the planar direction relative to an edge of the positive electrode. A positive electrode terminal is connected to the positive electrode, and a negative electrode terminal is connected to the negative electrode. The negative electrode terminal has a contact piece intersecting with the continuous direction of the edge of the negative electrode and intersecting with the planar direction of the negative electrode. The contact piece comprehensively cleaves and contacts a plurality of the edges of the negative electrode. | 02-19-2009 |
20090098464 | Reactive polymer-supporting porous film for battery separator and use thereof - The invention provides a reactive polymer-supporting porous film for use as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film, the partially crosslinked reactive polymer being obtained by the reaction of a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule with a monocarboxylic acid. | 04-16-2009 |
20090117472 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SUCH NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY - A negative electrode | 05-07-2009 |
20090197180 | SPACERS BETWEEN TABS OF ELECTRODE PLATES IN AN ELECTROCHEMICAL CELL FOR AN IMPLANTABLE MEDICAL DEVICE - A battery (or cell) in an implantable medical device is presented. The cell includes a first electrode element with a first tab extending therefrom and a second electrode element with a second tab extending therefrom. A spacer is coupled to the first and second tabs. | 08-06-2009 |
20090202915 | NEGATIVE ELECTRODE FOR NONAQUEOUS SECONDARY BATTERY - A negative electrode ( | 08-13-2009 |
20090233177 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - One width end of an electrode of a nonaqueous electrolyte secondary battery is provided with an exposed portion. A reinforcing element for reinforcing the exposed portion is provided between adjacent parts of the exposed portion when seen in the longitudinal cross section of the battery. | 09-17-2009 |
20090246637 | SECONDARY BATTERY - The invention provides a secondary battery having positive electrode plates | 10-01-2009 |
20090246638 | Electrochemical Device - An electrochemical device comprises an electrode matrix including a multilayer structure composed of a positive electrode, a negative electrode, and a first separator, and first and second dummy electrodes electrically connected to the positive and negative electrodes, respectively. The first and second dummy electrodes have respective opposing parts opposing each other through a second separator at an outer peripheral part of the electrode matrix. One or each of the first and second dummy electrodes has a resistance control layer at least on a side where the opposing parts oppose each other. The resistance control layer has such a resistance value that an estimated internal short circuit current between the first and second dummy electrodes is equivalent to 0.09 C to 1.00 C. The first and second dummy electrodes are adapted to short-circuit each other at a lower temperature than the positive and negative electrodes do. | 10-01-2009 |
20090246639 | SECONDARY BATTERY - An electrode assembly for a secondary battery comprising an adiabatic plate attached to the negative electrode plate is disclosed. The electrode assembly comprises a positive electrode plate having a positive electrode collector, a positive electrode coating, and a non-coated area on the positive electrode collector. The negative electrode plate has a negative electrode collector, a negative electrode coating, and a non-coated area on the negative electrode collector. A separator insulates the positive and negative electrode plates. Positive and negative electrode tabs are attached to the non-coated areas of the positive and negative electrode collectors. The negative electrode plate has an adiabatic plate attached to the surface of a non-coated area of the negative electrode collector that is opposite the surface to which the negative electrode tab is attached. This construction improves battery stability and prevents short circuits caused either by heat generated during overcharging or by an internal short circuit. | 10-01-2009 |
20090246640 | ELECTRODE ASSEMBLY AND LITHIUM ION SECONDARY BATTERY HAVING THE SAME - An electrode assembly includes a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; and a separator separating the positive electrode and the negative electrode from each other, and the separator including a porous layer formed by a combination of a barium titanate (BaTiO | 10-01-2009 |
20090253043 | ELECTRODE ASSEMBLY AND SECONDARY BATTERY HAVING THE SAME - A secondary battery, which may include an electrode assembly, a can having an upper opening to receive the electrode assembly and a cap assembly finishing the opening of the can is disclosed. The electrode assembly may include a positive electrode plate provided with a positive electrode active material layer, a negative electrode plate provided with a negative electrode active material layer, a separator interposed between the positive electrode plate and the negative electrode plate and an insulation coating layer coated on the positive electrode plate. The insulation coating layer may includes a first coating layer coated on the positive electrode coating portion. The insulation coating layer may contain olivine type lithium phosphate compound. A second coating layer coated on the first coating layer may contain ceramic powder and a binder. | 10-08-2009 |
20090311607 | BATTERY ELECTRODE SHEET - A battery electrode sheet comprises a conductive substrate and an electrode material coated on at least a portion of the conductive substrate. The coated portion of the conductive substrate comprises a first region, a second region, and a transition region between the first and second regions. The electrode material on the first region has a first thickness; and the electrode material on the second region has a second thickness, which is smaller than the first thickness. The electrode material on the transition region has a thickness that decreases between the first and second regions. | 12-17-2009 |
20100009264 | HIGH RATE DISCHARGE BATTERY CELL - A high rate discharge battery cell | 01-14-2010 |
20100015529 | ELECTROLYTE ASSEMBLY FOR SECONDARY BATTERY OF NOVEL LAMINATED STRUCTURE - Disclosed herein is an electrode assembly for secondary batteries, wherein the electrode assembly is constructed in a structure in which a cathode, having an active material layer coated on one major surface of a current collector, and an anode, having an active material layer coated on one major surface of another current collector, are bent in a zigzag fashion in vertical section, and the cathode and the anode are fitted to each other, such that the electrode active material layers face each other, while a separator is disposed between the cathode and the anode. The electrode assembly according to the present invention has the effect of simplifying a process for manufacturing a battery, thereby reducing the manufacturing costs and the manufacturing time, and therefore, improving the productivity. | 01-21-2010 |
20100015530 | SEPARATOR FOR ELECTROCHEMICAL DEVICE, ELECTRODE FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE - A separator for an electrochemical device of the present invention includes a porous film including: a filler; an organic binder; and at least one resin selected from resin A that has a melting point of 80 to 140° C. and resin B that absorbs a non-aqueous electrolyte and swells upon heating and whose swelling degree increases with increasing temperature, and the filler contains boehmite having a secondary particle structure in which primary particles are connected. | 01-21-2010 |
20100028781 | ELECTRODE PACK OF AN ELECTRICHEMICAL CELL AND ELECTROCHEMICAL CELL WITH AN ELECTRODE PACK - The invention relates to an electrode pack of an electrochemical cell ( | 02-04-2010 |
20100086858 | SECONDARY BATTERY - An electrode assembly for a secondary battery comprising an adiabatic layer attached to the negative electrode layer is disclosed. The electrode assembly comprises a positive electrode layer having a positive electrode collector, a positive electrode coating, and a non-coated area on the positive electrode collector. The negative electrode layer has a negative electrode collector, a negative electrode coating, and a non-coated area on the negative electrode collector. A separator insulates the positive and negative electrode layers. Positive and negative electrode tabs are attached to the non-coated areas of the positive and negative electrode collectors. The negative electrode layer has an adiabatic layer attached to the surface of a non-coated area of the negative electrode collector that is opposite the surface to which the negative electrode tab is attached. This construction improves battery stability and prevents short circuits caused either by heat generated during overcharging or by an internal short circuit. | 04-08-2010 |
20100104945 | SECONDARY BATTERY AND METHOD FOR MANUFACTURING SECONDARY BATTERY - In a secondary battery, a current collector plate ( | 04-29-2010 |
20100112454 | 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. | 05-06-2010 |
20100129720 | POLYOLEFIN MICROPOROUS MEMBRANE - Provided are a polyolefin microporous membrane having a thickness of from 1 to 100 μm, a pore diameter of from 0.01 to 1 μm, and protrusions having a height of from 0.5 to 30 μm formed by embossing on at least one of the surfaces of the membrane; a production method of the membrane; and a separator for battery made of the membrane. | 05-27-2010 |
20100173205 | ELECTRODE GROUP FOR USE IN A LITHIUM ION BATTERY - An electrode group is configured for use in a lithium ion battery. The electrode group includes an anode plate and a cathode plate wound with a separator interposed therebetween. At least one metal oxide layer is disposed between the anode plate and the cathode plate. The metal oxide layer is provided at two length edges of the anode plate and/or the cathode plate, corresponding to the cutting edge of the cathode current collector where the cut burr formed in cutting process. Even though the cut burrs can pierce through the separator, the cut burrs still cannot contact the anode film. Any internal circuit short, caused by contact between the aluminum foil and the anode film, may therefore be avoided and, therefore, the performance of the lithium ion battery is remarkably improved. | 07-08-2010 |
20100190063 | METHOD AND APPARATUS FOR MANUFACTURING MEMBER FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME - At least (i) dispersing and mixing inorganic oxide filler, solvent and binder so as to produce a coating paint; (ii) supplying the coating paint to a gravure coater; and (iii) coating the coating paint to member via a gravure roll are included. The (i) or (ii) includes allowing the coating paint to stand still and removing an aggregate and a precipitate of inorganic oxide filler. | 07-29-2010 |
20100203393 | Device for Storing Electric Power Compring a Protective Barrier Layer for the Collector - The invention concerns a device for storing electric power comprising an electrode layer ( | 08-12-2010 |
20100203394 | THIN METAL-AIR BATTERIES - Thin metal-air batteries are described. The batteries do not have an enclosure. | 08-12-2010 |
20100216026 | Thin film electrochemical energy storage device with three-dimensional anodic structure - A method for forming a battery from via thin-film deposition processes is disclosed. A mesoporous carbon material is deposited onto a surface of a conductive substrate that has high surface area, conductive micro-structures formed thereon. A porous, dielectric separator layer is then deposited on the layer of mesoporous carbon material to form a half cell of an energy storage device. The mesoporous carbon material is made up of CVD-deposited carbon fullerene “onions” and carbon nano-tubes, and has a high porosity capable of retaining lithium ions in concentrations useful for storing significant quantities of electrical energy. Embodiments of the invention further provide for the formation of an electrode having a high surface area conductive region that is useful in a battery structure. In one configuration the electrode has a high surface area conductive region comprising a porous dendritic structure that can be formed by electroplating, physical vapor deposition, chemical vapor deposition, thermal spraying, and/or electroless plating techniques. | 08-26-2010 |
20100216027 | ELECTRIC STORAGE DEVICE, AND PRODUCTION METHOD THEREOF - A negative electrode mixture member accommodated in a bag-like separator includes a negative electrode provided with a negative electrode current collector and a negative electrode mixture layer formed on one surface of the negative electrode current collector, and a metal lithium foil adhered onto the negative electrode. Accordingly, even when the metal lithium is dropped from the negative electrode current collector of the negative electrode, the diffusion of the metal lithium in the electric storage device can be prevented. Consequently, short-circuit in the electric storage device or the corrosion of the outer casing caused by the free metal lithium can be prevented, whereby the safety of the electric storage device can be enhanced. Even when the metal lithium is dropped from the negative electrode current collector of the negative electrode, the metal lithium can be retained in the vicinity of the negative electrode. Therefore, the doping amount of the lithium ions can be secured as designed. | 08-26-2010 |
20100233547 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE BATTERY AND NONAQUEOUS ELECTROLYTE BATTERY - To obtain a separator for a nonaqueous electrolyte battery that has an excellent nonaqueous electrolyte permeability into an electrode and an excellent electrolyte retentivity of the electrode and achieves a large capacity, a high energy density and a good high-temperature charge characteristic. A separator 3 used for a nonaqueous electrolyte battery is formed by disposing a porous layer 2 made of inorganic fine particles and a resin binder on a porous separator substrate 1, the resin binder is made of at least one resin selected from the group consisting of polyimide resins, polyamide resins and polyamideimide resins and the molecular chain of the resin has a halogen atom content of 10% to 30% by weight, and the content of the resin binder in the porous layer is 5% by weight or more. | 09-16-2010 |
20100255380 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE BATTERY AND NONAQUEOUS ELECTROLYTE BATTERY - To obtain a nonaqueous electrolyte battery that has an excellent nonaqueous electrolyte permeability into an electrode and an excellent electrolyte retentivity of the electrode and achieves a large capacity, a high energy density and a good high-temperature charge characteristic. A separator used for a nonaqueous electrolyte battery is formed by disposing a porous layer made of inorganic fine particles and a resin binder on a porous separator substrate. The resin binder is made of at least one resin selected from the group consisting of polyimide resins and polyamideimide resins, the resin having an acid value of 5.6 to 28.0 KOHmg/g and a logarithmic viscosity of 0.5 to 1.5 dl/g. The content of the resin binder in the porous layer is 5% by weight or more. | 10-07-2010 |
20100255381 | All -electron battery having area-enhanced electrodes - Improved energy storage is provided by exploiting two physical effects in combination. The first effect can be referred to as the All-Electron Battery (AEB) effect, and relates to the use of inclusions embedded in a dielectric structure between two electrodes of a capacitor. Electrons can tunnel through the dielectric between the electrodes and the inclusions, thereby increasing the charge storage density relative to a conventional capacitor. The second effect can be referred to as an area enhancement effect, and relates to the use of micro-structuring or nano-structuring on one or both of the electrodes to provide an enhanced interface area relative to the electrode geometrical area. Area enhancement is advantageous for reducing the self-discharge rate of the device. | 10-07-2010 |
20100261064 | HIGH POWER LITHIUM UNIT CELL AND HIGH POWER LITHIUM BATTERY PACK HAVING THE SAME - Disclosed herein are a high power lithium unit cell and a high power lithium battery pack having the high power lithium unit cell. The present invention increases the width of an electrode terminal of a lithium battery, thus reducing heat generation and a potential drop due to resistance of the electrode terminal, therefore efficiently eliminating the generated heat. | 10-14-2010 |
20100261065 | LAMINATED BATTERY CELL AND METHODS FOR CREATING THE SAME - Electrodes with a multilayer or monolayer composite separator are described. The multilayer composite separator comprises multiple individual composite separator layers. Each individual composite separator layer comprises inorganic particulate material(s) and organic polymer(s) with different inorganic particulate material/polymer weight ratios. The multilayer composite separator layer is constructed in a way such that the composite separator layer adjacent to the electrode active material contains a higher weight percentage of the inorganic particulate material and lower weight percentage of the organic polymer than the composite separator layer outermost from the electrode current collector. Laminated cells comprising a positive electrode, a negative electrode, a laminated multilayer or monolayer composite separator layer are described, wherein at least one of the electrodes has a multilayer or monolayer composite separator disposed onto the surface of the electrode. Methods of making such laminated cells are also described. | 10-14-2010 |
20100261066 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - The present invention has an object to provide a non-aqueous electrolyte secondary battery having a high capacity and favorable charge/discharge characteristics at a high current density. In order to achieve this object, the positive electrode for a non-aqueous electrolyte secondary battery in accordance with the present invention includes a current collector and an active material layer, the active material layer has a first active material layer including dendritic active material particles, and the dendritic active material particles branch out into a plurality of branch portions from a bottom portion of the current collector side toward a surface side of the first active material layer. In the first active material layer, it is preferable that an active material density of the bottom portion side is larger than an active material density of the surface side. | 10-14-2010 |
20100285370 | ELECTRODE GROUP WITH DESIRABLE HEAT DISSIPATING PERFORMANCE FOR USE IN LITHIUM ION BATTERIES - An electrode group for use in lithium ion batteries includes an anode plate, a cathode plate and a separator disposed between the anode plate and the cathode plate. The anode plate includes an anode current collector and an anode film containing anode active material formed on the anode current collector. The cathode plate includes a cathode current collector and a cathode film containing cathode active material formed on the cathode current collector. The anode current collector is formed with a number of anode extending portions extending along a width direction thereof and the anode extending portions are coupled together to form an anode lead. The cathode current collector is formed with a number of cathode extending portions extending along a width direction thereof and the cathode extending portions are coupled together to form a cathode lead. | 11-11-2010 |
20100297507 | METHOD AND APPARATUS FOR POROUS INSULATIVE FILM FOR INSULATING ENERGY SOURCE LAYERS - Some embodiments include an anode having an elongate ribbon shape, a cathode having an elongate ribbon shape, the cathode disposed adjacent to and in alignment with the anode, a separator disposed between the anode and the cathode and an edge film means for insulating the edge of the cathode from the anode. | 11-25-2010 |
20100316911 | MULTILAYER STRUCTURE AND METHOD OF PRODUCING THE SAME - A multilayer structure, in particular a trench capacitor, is provided comprising a patterned layer structure comprising trenches, and a first electrode, wherein the patterned layer structure comprises a FASS-curve structure, and wherein at least parts of the first electrode are formed on the FASS-curve structure. | 12-16-2010 |
20110003209 | SEPARATOR FOR BATTERY, METHOD FOR MANUFACTURING THE SAME, AND LITHIUM SECONDARY BATTERY - The separator for a battery according to the present invention is a separator for a battery including an insulator layer containing a fibrous material having a heat resistant temperature of equal to or higher than 150° C., insulating inorganic fine particles and a binder, or a separator for a battery including a porous layer formed of a thermal melting resin and an insulator layer containing insulating inorganic fine particles and a binder, wherein water content per unit volume is equal to or smaller than 1 mg/cm | 01-06-2011 |
20110008679 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR FABRICATING THE SAME - A nonaqueous electrolyte secondary battery includes an electrode group | 01-13-2011 |
20110020709 | POROUS FILM AND SECONDARY BATTERY ELECTRODE - The present invention is intended for providing a porous film having excellent film uniformity, and is capable to contribute for improving cyclic and rate properties, which is provided on a surface of electrode used for a secondary battery and the like. | 01-27-2011 |
20110027656 | ELECTROPHORETIC ASSEMBLY OF ELECTROCHEMICAL DEVICES - Methods are provided for making bipolar electrochemical devices, such as batteries, using electrophoresis. A bipolar device is assembled by applying a field that creates a physical separation between two active electrode materials, without requiring insertion of a discrete separator film or electrolyte layer. | 02-03-2011 |
20110027657 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a separator between the positive electrode and the negative electrode, in which at least one of the positive electrode and the negative electrode has an active material layer containing a material whose electric resistance increases at a high temperature, and the material is unevenly distributed in proximity to the separator of the active material layer. | 02-03-2011 |
20110059368 | SEPARTOR FOR HIGH-POWER DENSITY LITHIUM ION SECONDARY BATTERY (AS AMENDED) - There is provided a separator for a high-power density lithium ion secondary battery, the separator comprising a polyolefin microporous membrane, wherein the polyolefin microporous membrane has a tensile strength in the longitudinal direction (MD) of 50 MPa or higher and a tensile strength in the transverse direction (TD) of 50 MPa or higher, and a sum total of an MD tensile elongation and a TD tensile elongation of 20 to 250%; and the polyolefin microporous membrane comprises a polypropylene. | 03-10-2011 |
20110076567 | METHOD FOR FORMING A THIN-FILM LITHIUM-ION BATTERY - A method for forming a lithium-ion type battery including the steps of forming, over an at least locally conductive substrate, an insulating layer having a through opening; successively and conformally depositing a stack comprising a cathode collector layer, a cathode layer, an electrolyte layer, and an anode layer, this stack having a thickness smaller than the thickness of the insulating layer; forming, over the structure, an anode collector layer filling the space remaining in the opening; and planarizing the structure to expose the upper surface of the insulating layer. | 03-31-2011 |
20110076568 | METHOD FOR FORMING A VERTICAL THIN-FILM LITHIUM-ION BATTERY - A method for forming a lithium-ion type battery, including the successive steps of: forming, in a substrate, a trench; successively and conformally depositing a stack including a cathode collector layer, a cathode layer, an electrolyte layer, and an anode layer, this stack having a thickness smaller than the depth of the trench; forming, over the structure, an anode collector layer filling the space remaining in the trench; and planarizing the structure to expose the upper surface of the cathode collector layer. | 03-31-2011 |
20110076569 | CURRENT CARRYING BLOCK FOR RESISTANCE WELDING, AND METHOD FOR MANUFACTURING SEALED BATTERY AND SEALED BATTERY EACH USING THE CURRENT CARRYING BLOCK - In a sealed battery, a metal current carrying block | 03-31-2011 |
20110086276 | Polymeric Material And Its Manufacture And Use - Disclosed herein is a polymer composition, its manufacture and use, said composition may comprise greater than about 90 mole % propylene monomer, and having a unique combination of properties, including one or more of the following: a heat of fusion of more than about 108 J/g, a melting point of 165° C. or higher, a Melt Flow Rate so low that it is essentially not measurable and a molecular weight of greater than about 1.5×10 | 04-14-2011 |
20110091774 | POROUS FILM AND SECONDARY BATTERY ELECTRODE - Provided is a porous film that can contribute to improving the cycle characteristics of an electric cell by improving binding characteristics, for a porous film provided on a surface of an electrode used in a secondary cell and the like. The porous film comprises a water-soluble polymer, an inorganic filler, and a water-insoluble particulate polymer including 0.5-40 mass % of a monomer unit having a hydrophilic group selected from the group consisting of carboxylic acid groups, hydroxyl groups, and sulfonate groups. | 04-21-2011 |
20110097630 | METHOD FOR MANUFACTURING LITHIUM ION POLYMER BATTERY, BATTERY CELL, AND LITHIUM ION POLYMER BATTERY INCLUDING THE SAME - A method for manufacturing a lithium ion polymer battery is provided in which in injecting electrolyte into a lithium ion polymer battery, the battery cell is immersed in an electrolyte impregnation bath to allow the electrolyte to be impregnated into the cell. The electrolyte can be impregnated simultaneously, and as the battery cell is activated, the electrolyte is settled down in the interior of the battery cell. Thus, when the battery cell is sealed, a phenomenon that the electrolyte is present at the sealed portion can be prevented. | 04-28-2011 |
20110104572 | ELECTRODE ASSEMBLY FOR SECONDARY BATTERY AND METHOD OF MAKING THE ELECTRODE ASSEMBLY - An electrode assembly for a secondary battery and a method of manufacturing the same are disclosed. An electrode assembly comprises: a plurality of separator members formed by winding a central separator member, wherein the central separator member is a predeterminated portion of the separator; and a plurality of electrode members positioned between each of the separator members; wherein the separator including the plurality of separator members and the central separator member is one of the plurality of separator members, and wherein both opposite ends of the central separator member is curved in opposite directions, respectively. | 05-05-2011 |
20110117438 | ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY USING THE SAME - An electrode assembly and a rechargeable battery using the same include a positive electrode including a positive current collector and a positive active material on the positive current collector; a negative electrode including a negative current collector and a negative active material on the negative current collector; an outer electrode including an outer current collector and an outer active material on the outer current collector, wherein the outer current collector includes an outer surface facing away from an outer separator and an inner surface facing toward the outer separator, and the outer active material is on both the outer surface and the inner surface, and wherein a thickness of the outer active material is less than at least one of a thickness of the positive active material or a thickness of the negative active material. | 05-19-2011 |
20110151332 | SYSTEM AND METHOD FOR SEALING BATTERY SEPARATOR - One embodiment of the present subject matter includes a battery having a stack of substantially planar battery electrodes, the stack including a first electrode including a first tab, and a second electrode including a second tab, with the first tab electrically connected to the second tab. The embodiment includes a first separator layer and a second separator layer sandwiching the first electrode, with the edges of the first separator layer and the second separator connected with a weld, the first separator layer and the second separator layer defining an interior space in which the first electrode is disposed, with the first tab extending outside the interior space. The embodiment includes a battery housing having electrolyte disposed therein, the housing including at least a first aperture and a feedthrough aperture; a lid conformed and sealed to the first aperture; and a feedthrough conformed and sealed to the feedthrough aperture. | 06-23-2011 |
20110159373 | ELECTROCHEMICAL CELL - An electrochemical cell, membrane, and method for making the membrane and electrochemical cell are disclosed in which ion passage channels of the membrane have advantageous characteristics relating to dimensions, positioning, and patterning. The ion passage channels are formed by selected means of radiation, many of which require post-radiation manipulation. | 06-30-2011 |
20110171534 | Long lasting high current density charging & discharging, temperature-resistant batteries and related methods - Secondary batteries are disclosed, which comprise a separator of dielectric material permeable to ion flow in combination with aligned Carbon or Zirconium nanotubes extending between an anode and a cathode comprised of Zirconium and aligned nanotubes and having high surface areas, and one or two electrolytes comprising Bismuth in colloidal suspension and when two are used they are confined to two independent chambers to prevent comingling. | 07-14-2011 |
20110177395 | FIBER ASSEMBLY, COMPOSITE OF ELECTRO CONDUCTIVE SUBSTRATE AND FIBER ASSEMBLY, AND PRODUCTION METHODS THEREOF - The present invention relates to a fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber, wherein the ultrafine composite fiber includes at least two polymeric components and the ultrafine composite fiber includes at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 10 | 07-21-2011 |
20110223485 | MICROPOROUS MEMBRANES, METHODS FOR MAKING THESE MEMBRANES, AND THE USE OF THESE MEMBRANES AS BATTERY SEPARATOR FILMS - A membrane includes a first polyethylene having an Mw<1.0×10 | 09-15-2011 |
20110236762 | POROUS MEMBRANES AND METHODS OF MAKING THE SAME - The instant disclosure relates to porous membranes and methods of making the same. An example of the method includes exposing a polymeric film (including a polymer and i) a gel-forming polymer, ii) ceramic particles, or iii) combinations of i and ii) established on a carrier belt to a non-solvent or a slightly miscible solvent of a polymer in the polymeric film, thereby inducing formation of a porous structure in the polymeric film. The method further includes transporting the polymeric film on the carrier belt into a bath of a non-solvent or a slightly miscible solvent of the polymer for a predetermined time thereby finalizing the formation of the porous structure and forming the porous membrane. The porous membrane is removed from the non-solvent or slightly miscible solvent bath. | 09-29-2011 |
20110244335 | SEPARATION MEMBRANE FOR BATTERY, AND BATTERY - An object of the present invention is to provide a separation membrane for a battery, which is excellent in heat resistance, does not expand and shrink depending on a temperature history, has no problem that, even when pressure is applied at a point due to external pressure, dendrite growth or the like, it is broken at the pressure point and its function is damaged at the broken part, and has no problem that the ionic conductivity decreases to decrease the battery performance, and to provide a battery equipped with such a separation membrane for a battery. | 10-06-2011 |
20110274980 | METHOD OF PRODUCING AN ELECTROCHEMICAL CELL AND ARTICLES PRODUCED THEREFROM - A method of producing an electrode assembly comprises disposing a thermoplastic polymer powder between a first surface of a first electrode and a first surface of a microporous separator to form a separator/electrode pre-assembly; and adhering the first surface of the first electrode to the first surface of the microporous separator via the thermoplastic polymer powder to form a separator/electrode assembly, wherein the adhesive thermoplastic polymer does not form a solid layer. | 11-10-2011 |
20110287323 | Electrode and Insulator Structure for Battery and Method of Manufacture - A battery core is made from a strip of insulating material folded longitudinally to form parallel panels. In one embodiment there are four panels and in another five panels. A positive electrode strip has an exposed foil center strip and positive electrode material along both edges. The positive electrode is folded around one fold of the insulator with the strip of foil exposed at the fold. A negative electrode strip has an exposed center strip and negative electrode material along both edges. The negative electrode is folded around a different fold of the insulator with the strip of foil exposed. | 11-24-2011 |
20110287324 | SURFACE MODIFIED GLASS FIBERS - A composition including glass fibers with a surface atomic concentration of oxygen in sp3 bonds with silicon of at least about 34% wherein the fibers are formed into a battery separator. | 11-24-2011 |
20110294015 | Method and Apparatus for Production of a Thin-Film Battery - A method for production of a thin-film battery includes providing a mount structure, applying of a first unmasked flow of a first electrode material to the mount structure in order to form a first electrode layer, applying a second unmasked flow of a battery material in order to form a battery layer, and applying a third unmasked flow of a second electrode material in order to form a second electrode layer. The applying steps are repeated in order to produce a thin-film battery which consists of a plurality of first electrode layers, a plurality of battery layers, and a plurality of second electrode layers. | 12-01-2011 |
20110311878 | POLYOLEFIN MICROPOROUS MEMBRANE AND SEPARATOR FOR LITHIUM ION SECONDARY BATTERY - A polyolefin microporous membrane that can realize a lithium ion secondary battery having favorable resistance against foreign matters or the like, and high cycle characteristics at a high temperature is provided. The present invention provides a polyolefin microporous membrane having a ratio of tensile strength in a length direction to that in a width direction of 0.75 to 1.25, and a thermal shrinkage rate in the width direction at 120° C. of less than 10%. | 12-22-2011 |
20120003545 | METHOD FOR MANUFACTURING ELECTRODE HAVING POROUS COATING LAYER, ELECTRODE MANUFACTURED THEREFROM, AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME - A method for manufacturing an electrode may include (S1) preparing a sol solution containing a metal alkoxide compound, and (S2) forming a porous non-woven coating layer of an inorganic fiber by electroemitting the sol solution onto an outer surface of an electrode active material layer formed on at least one surface of a current collector. The porous non-woven coating layer formed on the outer surface of the electrode active material layer may be made from an inorganic fiber having excellent thermal stability. When an electrochemical device is overheated, the porous non-woven coating layer may contribute to suppression of a short circuit between a cathode and an anode and performance improvement of an electrochemical device due to uniform distribution of pores. | 01-05-2012 |
20120015254 | Method For Manufacturing Separator Including Porous Coating Layers, Separator Manufactured By The Method And Electrochemical Device Including The Separator - Disclosed is a method for manufacturing a separator. The method includes (S1) preparing a slurry containing inorganic particles dispersed therein and a solution of a binder polymer in a solvent, and coating the slurry on at least one surface of a porous substrate to form a first porous coating layer, and (S2) electroprocessing a polymer solution on the outer surface of the first porous coating layer to form a second porous coating layer. The first porous coating layer formed on at least one surface of the porous substrate is composed of a highly thermally stable inorganic material to suppress short-circuiting between an anode and a cathode even when an electrochemical device is overheated. The second porous coating layer formed by electroprocessing improves the bindability of the separator to other base materials of the electrodes. | 01-19-2012 |
20120040251 | BATTERY ELECTRODE AND METHOD FOR MANUFACTURING SAME - A battery electrode with a pasting textile, fabric, or scrim made with an electrode grid (e.g., a stamped grid or expanded metal grid) coated in battery electrode and covered with pasting textile formed of a bonded, non-woven fiber web. The web is formed from one or more fibers with an average length greater than 20 μm. In various embodiments, the web is formed from one or more spun, continuous fibers. The battery electrode may be made in a continuous process where multiple grids are formed in a single sheet, coated with electrode active material, and the scrim before being cut into individual electrodes. | 02-16-2012 |
20120094183 | Battery Separator With Improved Oxidation Stability - The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR | 04-19-2012 |
20120107694 | Positive Electrode Protective Layer Composition, Rechargeable Lithium Battery Including Protective Layer for Positive Electrode and Method of Manufacturing Same - A positive electrode protective layer composition of a rechargeable lithium battery includes a polymer compound and an ionic liquid including a borate-based anion. A rechargeable lithium battery includes the positive electrode protective layer. A method of manufacturing the same is also provided. | 05-03-2012 |
20120141877 | ELECTRODE OF SECONDARY CELL INCLUDING POROUS INSULATING LAYER, AND MANUFACTURING METHOD THEREOF - The present invention provides a manufacturing method of a secondary cell electrode forming a porous insulating layer on at least one surface between a negative electrode and a positive electrode, including coating an electrode layer slurry on the electrode surface, coating the porous insulating layer while in a state in which the electrode layer slurry has not been dried, and simultaneously drying the electrode layer slurry and the porous insulating layer coating slurry so a binder of the porous insulating layer does not block the pores of the electrode layer. | 06-07-2012 |
20120156568 | BATTERY SEPARATORS WITH VARIABLE POROSITY - A porous polymer battery separator is provided that includes variable porosity along its length. Such battery separators can increase the uniformity of the current density within electrochemical battery cells that may normally experience higher current density and higher temperatures near their terminal ends than they do near their opposite ends. By disposing a variable porosity separator between the electrodes of an electrochemical cell such that its terminal end has a lower porosity than its opposite end, the transport of ions, such as lithium ions, through the separator can be more restricted in normally high current regions and less restricted in normally low current regions, thereby increasing the overall uniformity of current density within the battery cell. Variable porosity battery separators may be produced by a dry-stretching process or by a wet process. These processes may include forming a polymer-containing film, producing a uniform distribution of pore sites within the film, and reforming the polymer-containing film to a uniform thickness. | 06-21-2012 |
20120189916 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a non-aqueous electrolyte, a separator interposed between the positive electrode and the negative electrode, and a porous layer provided on a surface of the positive electrode. The porous layer contains titania particles, a dispersing agent, and an aqueous binder. The dispersing agent includes silica having an average particle size of less than 100 nm and less than that of the titania particles. | 07-26-2012 |
20120208090 | MICROPOROUS MEMBRANES, METHODS FOR MAKING SUCH MEMBRANES, AND THE USE OF SUCH MEMBRANES - The invention relates to microporous membranes comprising first and second components, the first component being polymer and the second component being aliphatic paraffin having a backbone and pendent groups. The invention also relates to methods for making such membranes, and the use of such membranes, e.g., as battery separator film. | 08-16-2012 |
20120225358 | HEAT-RESISTANT AND HIGH-TENACITY ULTRAFINE FIBROUS SEPARATION LAYER, METHOD FOR MANUFACTURING SAME, AND SECONDARY CELL USING SAME - Provided is an ultrafine fibrous porous separator with heat resistance and high-strength and a manufacturing method thereof, which enables mass-production of a heat-resistant and high-strength ultrafine fibrous separator by using an air-electrospinning (AES) method, and to a secondary battery using the same. The method of manufacturing a heat-resistant and high-strength ultrafine fibrous porous separator includes the steps of: air-electrospinning a mixed solution of 50 to 70 wt % of a heat-resistant, polymer material and 30 to 50 wt % of a swelling polymer material, to thereby form a porous web of a heat-resistant ultrafine fiber in which the heat-resistant polymer material and the swelling polymer material are consolidated in an ultrafine fibrous form; performing drying to control a solvent and moisture that remain on the surface of the porous web; and performing thermal compression on the dried porous web at a temperature of between 170° C. and 210° C. so as to obtain the separator. | 09-06-2012 |
20120237832 | SEPARATOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - Disclosed is a separator for a non-aqueous electrolyte secondary battery, the separator including a biaxially-oriented polyolefin porous film including extended-chain crystals and folded-chain crystals, wherein the extended-chain crystals and the folded-chain crystals form a shish-kebab structure. The average distance between the extended-chain crystals adjacent to each other is 1.5 μm or more and less than 11 μm, and the average distance between the folded-chain crystals adjacent to each other is 0.3 μm or more and less than 0.9 μm. A heat resistant porous film may be laminated on the polyolefin porous film. The heat resistant porous film includes a resin having heat resistance or a melting point higher than a melting point of the polyolefin porous film. | 09-20-2012 |
20120270110 | COMPOSITE BATTERY SEPARATOR - A microporous silica-filled polyolefin separator ( | 10-25-2012 |
20120295164 | METHOD FOR PRODUCING LITHIUM ION SECONDARY BATTERY - The method for producing a lithium ion secondary battery includes: selecting a positive electrode sheet, negative electrode sheet, and separator sheet; constructing an electrode assembly by superimposing the selected sheets; and housing the above electrode assembly in a battery case along with an electrolyte solution. In the method, at least one of the sheets is selected such that it satisfies the relationship 0.8 | 11-22-2012 |
20120301791 | LAMINATED SECONDARY BATTERY - The present invention aims at providing a laminated secondary battery in which no short circuit occurs even if an electrode sheet is not covered with an insulating resin. The present invention provides a laminated secondary battery in which positive electrode sheet | 11-29-2012 |
20120315545 | LITHIUM-SULFUR BATTERY WITH POLYSULFIDE CONFINING LAYER - The present invention provides a lithium-sulfur battery with a polysulfide confining layer, which can prevent loss of polysulfide formed on the surface of a positive electrode during charge and discharge reactions, thus improving the durability of the battery. For this purpose, the present invention provides a lithium-sulfur battery including a hydrophilic polysulfide confining layer interposed between a positive electrode and a separator to prevent a polysulfide-based material from being lost from the surface of the positive electrode during discharge. | 12-13-2012 |
20130022876 | SURFACE MODIFIED POLYMERIC MATERIALS, MODIFIED FUNCTIONALIZED POLYMERS, FUNCTIONAL POLYMERS, AND METHODS - The present invention relates to new, improved or modified polymer materials, membranes, substrates, and the like and to new, improved or modified methods for permanently modifying the physical and/or chemical nature of surfaces of the polymer materials, membranes, or substrates for a variety of end uses or applications. For example, one improved method uses a carbene and/or nitrene modifier to chemically modify a functionalized polymer to form a chemical species which can chemically react with the surface of a polymer substrate and alter its chemical reactivity. Furthermore, this invention can be used to produce chemically modified membranes, fibers, hollow fibers, textiles, and the like. | 01-24-2013 |
20130149614 | SEPARATOR FOR ALKALINE BATTERY, AND ALKALINE BATTERY - An object of the present invention is to provide a separator for alkaline battery and an alkaline battery capable of reducing the internal resistance of the alkaline battery so as to improve the heavy load discharge performance. The separator for alkaline battery is a separator for separating a positive electrode active material and a negative electrode active material of the alkaline battery from each other, the separator containing 40% or more by weight of cellulose fibers, and 0.05% to 0.5% by weight of polyamine-epichlorohydrin resin in terms of resin solid content. The alkaline battery has its positive electrode active material and negative electrode active material separated from each other by the separator. | 06-13-2013 |
20130164628 | IONICALLY CONDUCTIVE MEMBRANES FOR PROTECTION OF ACTIVE METAL ANODES AND BATTERY CELLS - Disclosed are ionically conductive membranes for protection of active metal anodes and methods for their fabrication. The membranes may be incorporated in active metal negative electrode (anode) structures and battery cells. In accordance with the invention, the membrane has the desired properties of high overall ionic conductivity and chemical stability towards the anode, the cathode and ambient conditions encountered in battery manufacturing. The membrane is capable of protecting an active metal anode from deleterious reaction with other battery components or ambient conditions while providing a high level of ionic conductivity to facilitate manufacture and/or enhance performance of a battery cell in which the membrane is incorporated. | 06-27-2013 |
20130177817 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICES, NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICE, AND PRODUCTION METHODS THEREOF - The present invention aims to provide a method for producing a separator for nonaqueous electrolyte electricity storage devices, the method allowing avoidance of use of a solvent that places a large load on the environment, and also allowing relatively easy control of parameters such as the porosity and the pore diameter. | 07-11-2013 |
20130189587 | MICROPOROUS MEMBRANES, METHODS FOR MAKING SUCH MEMBRANES, AND THE USE OF SUCH MEMBRANES AS BATTERY SEPARATOR FILM - The invention relates to microporous membranes having a thickness 19.0 micrometer or less, the membranes having a relatively high porosity, air permeability and puncture strength. Such membranes can be produced by extrusion and are suitable for use as battery separator film. | 07-25-2013 |
20130202970 | Salt Modified Inherently Electrostatic Dissipative Polymers - The present invention relates to inherently electrostatic dissipative polymers, such as thermoplastic urethanes (TPU), and compositions thereof. The present invention provides a composition comprising: (a) an inherently dissipative polymer and (b) a halogen-free metal salt of an amidoalkanesulfonic acid, a hydrocarbyl-substituted benzenesulfonic acid, or a mixture thereof, or a polymer derived therefrom. The invention also provides a shaped polymeric article comprising the inherently dissipative polymer compositions described herein. The invention also provides a process of making the inherently dissipative polymer compositions described herein. The process includes the step of mixing a halogen-free metal-containing salt into an inherently dissipative polymer. | 08-08-2013 |
20130236792 | SECONDARY BATTERY - The present invention relates to a secondary battery in which a stacked electrode assembly having a cathode, an anode and a separator is accommodated together with an electrolytic solution between exterior members. In the present invention, the secondary battery has a plurality of joint parts at which the outer peripheral portion of the separator is joined with the exterior members and a holding part formed at least between the joint parts so as to hold therein the electrolytic solution, wherein a sum of perimeters of the joint parts is longer than a perimeter of a rectangle of minimum area enclosing therein all of the joint parts. In this configuration, it is possible to refill the stacked electrode assembly with the electrolytic solution and protect the joint parts from breakage while preventing displacement of the stacked electrode assembly in the secondary battery. | 09-12-2013 |
20130260256 | LITHIUM-ION SECONDARY BATTERY - In the invention, a lithium-ion secondary battery, in which a value obtained by dividing average 3% modulus strength of a separator by average 3% modulus strength of a negative electrode including a negative electrode active material layer containing silicon and silicon oxide as a main component is 0.079 or less, is used. | 10-03-2013 |
20130266872 | ELECTRODE SEPARATOR - The present invention provides a separator for use in an alkaline electrochemical cell comprising a polymer material and an inert filler comprising zirconium oxide. Examples of polymer materials useful in this invention include ABS polymer material, halogenated alkylene polymer material, and PE polymer material. | 10-10-2013 |
20130266873 | SECONDARY BATTERY POROUS MEMBRANE, SLURRY FOR SECONDARY BATTERY POROUS MEMBRANE, AND SECONDARY BATTERY - To provide a secondary battery porous membrane that has superior heat resistance and flexibility and contributes to improvements in battery cycle characteristics. Also provided is a secondary battery having high cycle characteristics that uses this porous membrane. [Solution] This secondary battery porous membrane contains nonconductive particles and a binder. The binder is characterized by being formed from a polymer containing a nitrile group, a novel group, and a C | 10-10-2013 |
20130330631 | BATTERY AND METHOD OF MANUFACTURING A BATTERY - Methods of manufacturing a battery include the steps of forming a plurality of cathodes that each include a flag tab of a securing profile, forming a plurality of anodes that each include a tabbed portion of a securing profile, and stacking the cathodes and the anodes to create an electrode stack. The stacking step includes the steps of layering in alternating order the anodes and the cathodes with at least one layer of separator physically insulating each anode from each cathode, aligning the cathodes with a first alignment means, and aligning the anodes with a second alignment means. | 12-12-2013 |
20130330632 | METAL COMPLEXES FOR USE AS DOPANTS AND OTHER USES - The invention relates to electrochemical devices comprising complexes of cobalt comprising at least one ligand with a 5- or six membered, N-containing heteroring. The complex are useful as p- and n-dopants, as over of electrochemical devices, in particular in organic semiconductors. The complexes are further useful as over-discharge prevention and overvoltage protection agents. | 12-12-2013 |
20130330633 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICES, NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICE, AND PRODUCTION METHODS THEREOF - The present invention provides a method for producing a separator for nonaqueous electrolyte electricity storage devices. The method allows: avoidance of use of a solvent that places a large load on the environment; relatively easy control of parameters such as the porosity and the pore diameter; and a relatively high strength of a resultant separator for nonaqueous electrolyte electricity storage devices. The present invention relates to a method for producing a separator for nonaqueous electrolyte electricity storage devices that has a thickness ranging from 5 to 50 μm. The method includes the steps of preparing an epoxy resin composition containing a glycidylamine-type epoxy resin, a curing agent, and a porogen; forming a cured product of the epoxy resin composition into a sheet shape or curing a sheet-shaped formed body of the epoxy resin composition, so as to obtain an epoxy resin sheet; and removing the porogen from the epoxy resin sheet by means of a halogen-free solvent. | 12-12-2013 |
20130337336 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICES, NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICE, AND PRODUCTION METHODS THEREOF - The present invention provides a method for producing a separator for nonaqueous electrolyte electricity storage devices. The method allows: avoidance of use of a solvent that places a large load on the environment; relatively easy control of parameters such as the porosity and the pore diameter; and a high electrochemical stability of a resultant separator for nonaqueous electrolyte electricity storage devices. The present invention relates to a method for producing a separator for nonaqueous electrolyte electricity storage devices that has a thickness ranging from 5 to 50 μm. The method of the present invention includes the steps of: preparing an epoxy resin composition containing an epoxy resin whose molecular structure has no aromatic ring, a curing agent, and a porogen; forming a cured product of the epoxy resin composition into a sheet shape or curing a sheet-shaped formed body of the epoxy resin composition, so as to obtain an epoxy resin sheet; and removing the porogen from the epoxy resin sheet by means of a halogen-free solvent. | 12-19-2013 |
20140011093 | COMPOSITION FOR PREPARING SEPARATOR, METHOD FOR PREPARING SEPARATOR, AND ELECTROCHEMICAL DEVICE HAVING SEPARATOR PREPARED THEREFROM - The present invention relates to a composition for preparing a separator for an electrochemical device, a method preparing a separator for an electrochemical device, and an electrochemical device having a separator prepared therefrom, more particularly, a composition for preparing a separator for an electrochemical device, comprising a polyolefin, a first diluent, and a second diluent, wherein an interaction energy between the first diluent and the second diluent is in the range of 2 to 3.5 cal/cm | 01-09-2014 |
20140023930 | ELECTROCHEMICAL DEVICE INCLUDING CERAMIC SEPARATOR STRUCTURE - An electrochemical device includes a first electrode layer, a separator coating layer on at least a first surface of the first electrode layer, the separator coating layer including a ceramic material and being patterned, and a second electrode layer facing the separator coating layer that is on the first surface of the first electrode layer. | 01-23-2014 |
20140030606 | SEPARATOR FOR ELECTROCHEMICAL DEVICE, METHOD FOR PRODUCING THE SAME, AND ELECTROCHEMICAL DEVICE - The method for producing a separator for an electrochemical device of the present invention includes: obtaining a separator forming composition, wherein the separator forming composition contains a resin raw material including a monomer or an oligomer, a solvent (a) capable of dissolving the resin raw material; and a solvent (b) capable of causing the resin raw material to agglomerate by solvent shock, and V | 01-30-2014 |
20140050989 | SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Disclosed is a separator having surface energy of about 45 mN to about 50 mN/m which can be prepared by radiating plasma on a polymer film under a current of from about 1800 mA to about 2000 mA and electric power of from about 2750 W to about 3000 W. Further disclosed is a rechargeable battery comprising the separator having a surface energy of about 45 mN to about 50 mN/m. | 02-20-2014 |
20140087269 | NONAQUEOUS ELECTROLYTE SECONDARY CELL - Provided is a nonaqueous electrolyte secondary cell including: a case; an element housed in the case, including at least a positive electrode member, a negative electrode member and a separator; and an electrolyte solution poured into the case, wherein when in the state of the case being installed, in the direction perpendicular to the liquid surface of the electrolyte solution, the length between the highest position and the lowest position of the element is represented by L | 03-27-2014 |
20140093782 | NANOMACHINED STRUCTURES FOR POROUS ELECTROCHEMICAL CAPACITORS - Embodiments of the invention describe energy storage devices, porous electrodes, and methods of formation. In an embodiment, an energy storage device includes a porous structure containing multiple main channels that extend into an electrically conductive structure at an acute angle. In an embodiment, an energy storage device includes a porous structure containing an array of V-groove or pyramid recesses. | 04-03-2014 |
20140106234 | MOLTEN-SALT BATTERY - There is provided with a molten-salt battery which can prevent relative positional displacement between a positive electrode or a negative electrode and a separator. Both faces of the negative electrodes are covered with the separators which are formed to bend along a lower end part of the respective positive electrodes. The separators respectively have a V-shaped or U-shaped cross section, a bent part is formed to have a valley-like (groove-like) shape, and the respective bent parts are disposed along a lower side of the positive electrodes. The positive electrodes having both faces covered with the respective separators as described above and the negative electrodes are laminated alternately. The dimension of the separators after being bent is made larger than that of the positive electrodes and the negative electrodes by 1 to 10%. | 04-17-2014 |
20140106235 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICES AND NONAQUEOUS ELECTROLYTE ELECTRICITY STORAGE DEVICE - Provided is a separator for nonaqueous electrolyte electricity storage devices that includes an improved porous epoxy resin membrane. In the separator for nonaqueous electrolyte electricity storage devices, a ratio I/Io between a peak intensity Io of an absorption peak present at 1240 cm | 04-17-2014 |
20140141336 | Methods of Making Single-Layer Lithium Ion Battery Separators Having Nanofiber and Microfiber Components - An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention. | 05-22-2014 |
20140141337 | Versatile Single-Layer Lithium Ion Battery Separators Having Nanofiber and Microfiber Components - An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention. | 05-22-2014 |
20140141338 | RECHARGEABLE LITHIUM BATTERY - Disclosed is a rechargeable lithium battery, including an electrode assembly including a positive electrode, a separator, and a negative electrode; and an electrode tape adhered to an outer surface of the electrode assembly, the electrode tape including a thermosetting resin selected from polyvinylchloride, a mixture of nitrile rubber and phenol resin, epoxy resin, polyurethane, melamine resin, urea resin, or combination thereof. | 05-22-2014 |
20140154582 | LITHIUM BATTERY AND METHOD FOR MANUFACTURING THE SAME - Disclosed is a lithium battery, including a positive electrode plate, a negative electrode plate, and a polyolefin separator disposed therebetween. An organic-inorganic hybrid film disposed between the polyolefin separator and the positive electrode plate, and/or disposed between the polyolefin separator and the negative electrode plate. The organic-inorganic hybrid film includes inorganic oxide particles and a fluorinated polymer binder, wherein the inorganic oxide particles and the fluorinated polymer binder have a weight ratio of about 40:60 to 80:20. | 06-05-2014 |
20140154583 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery | 06-05-2014 |
20140170502 | ELECTRIC STORAGE APPARATUS AND MANUFACTURING METHOD OF ELECTRIC STORAGE APPARATUS - An electric storage apparatus has a positive electrode plate, a negative electrode plate, and a separator. Each of the positive electrode plate and the negative electrode plate has a collector plate and an active material layer containing an electrolytic solution, and the active material layer is formed in a predetermined width on a partial region of a collector plate. The separator is placed between the positive electrode plate and the negative electrode plate and contains an electrolytic solution. At least one of the positive electrode plate and the negative electrode plate, an edge of the active material layer in a width direction has a waveform. A set value Wn of the width of the active material layer and a variation ΔW of the width of the active material layer satisfy a condition of 0.03≦ΔW/Wn≦0.056. | 06-19-2014 |
20140178767 | SECONDARY BATTERY, BATTERY PACK AND CAR - A secondary battery includes a positive electrode, a negative electrode containing a metal compound having a lithium ion absorption potential of 0.2V (vs. Li/Li | 06-26-2014 |
20140186715 | METHOD FOR MANUFACTURING SEPARATOR, SEPARATOR, AND BATTERY USING SEPARATOR - A method for manufacturing a polyolefin-based porous separator includes forming a sheet containing a polyolefin-based resin and a diluent, extracting the diluent from the sheet by using an extracting apparatus, and forming a separator by drying the extracted sheet using a drying apparatus provided with an inlet. The shortest distance between an outlet of the extracting apparatus and an inlet of the drying apparatus may be 100 mm or less. | 07-03-2014 |
20140205908 | ENHANCED-SAFETY GALVANIC ELEMENT - A separator for a galvanic element, more particularly a lithium ion cell, includes at least one positive electrode and at least one negative electrode that are configured to be separated by a separator. The separator includes a substrate composed of at least one high-temperature-resistant, fiber-forming polymer that has a melting point above 200° C. The substrate also includes at least one further polymer that has a lower melting point than the high-temperature-resistant polymer of the substrate and that connects the fibers of the high-temperature-resistant polymer. | 07-24-2014 |
20140212765 | VALVE REGULATED LEAD-ACID BATTERY - A valve-regulated lead acid battery comprises an element including a positive electrode plate which retains a positive active material, a negative electrode plate which retains a negative active material, and a separator. An average pore diameter of the negative active material measured by a bubble point method is 0.2 μm or more and 0.35 μm or less. An average pore diameter of the separator measured by the bubble point method is 10 to 40 times as large as the average pore diameter of the negative active material. | 07-31-2014 |
20140242470 | ADHESIVE RESIN COMPOSITION FOR SECONDARY BATTERY - An adhesive resin composition for a secondary battery for bonding a separator for a secondary battery and an electrode for a secondary battery, wherein the composition comprises an adhesive resin having a unit derived from an aromatic vinyl monomer and having a glass transition temperature of 25° C. or lower. | 08-28-2014 |
20140295285 | METHOD OF PREPARING SEPARATOR, SEPARATOR PREPARED THEREFROM, AND ELECTROCHEMICAL DEVICE HAVING THE SAME - The present invention refers to a method of preparing a separator, comprising: producing a dispersion comprising inorganic particles, a polymer binder, polymer fibers and a solvent; applying the dispersion on the top surface of a substrate to form a non-woven fabric web as a layer comprising the inorganic particles, the polymer binder and the polymer fiber, in which the inorganic particles are positioned in gaps of the polymer fibers and adhered thereto by the polymer binder; and drying and compressing the non-woven fabric web to obtain a non-woven fabric substrate; a separator prepared by the method; and an electrochemical device comprising the separator. | 10-02-2014 |
20140335421 | MICROPOROUS MEMBRANE OF POLYETHYLENE-BASED COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF - A microporous membrane of a polyethylene-based composite material, including high density and high crystallinity of polyethylene as a base material. The polyethylene is modified by a modifying agent accounting for 10-25 wt. % of the membrane and including a moderate molecular weight of rubber selected from polyisobutylene (PIB), ethylene-propylene methylene copolymer (EPM), or a mixture thereof, the rubber having a dynamic viscosity of between 50 and 2000 Pa·S at 100° C. and a weight average molecular weight of between 90,000 and 250,000. The modified polyethylene is dissolved in a solvent and a pore-forming agent for pore formation. | 11-13-2014 |
20140335422 | IMPLANTABLE MEDICAL DEVICE INCLUDING EDDY CURRENT REDUCING BATTERY - An implantable device, such as a pacer, defibrillator, or other cardiac rhythm management device, can include one or more MRI Safe components. In an example, the implantable device includes a battery including a first electrode and a second electrode separate from the first electrode. The second electrode includes a first surface and a second surface. The second electrode includes a slot through the second electrode from the first surface toward the second surface. The slot extends from a perimeter of the second electrode to an interior of the second electrode. The slot is configured to at least partially segment a surface area of the second electrode to reduce a radial current loop size in the second electrode. | 11-13-2014 |
20140349192 | FABRICATING METHOD OF ELECTRODE ASSEMBLY AND ELECTROCHEMICAL CELL CONTAINING THE SAME - A fabricating method of an electrode assembly according to the present invention includes forming a radical unit having a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one, and stacking at least one radical unit one by one to form a unit stack part. | 11-27-2014 |
20140356728 | APPARATUS AND METHOD FOR MANUFACTURING THIN FILM, ELECTRO-CHEMICAL DEVICE AND METHOD FOR MANUFACTURING ELECTRO-CHEMICAL DEVICE - A thin film production apparatus of the present invention includes: a substrate feeding mechanism configured to continuously feed a substrate; a substrate receiving mechanism configured to receive the substrate; a substrate conveying mechanism; a film formation roller; a first film formation source configured to form a first thin film on a film formation surface of the substrate traveling on an upstream side of the film formation roller in a substrate conveyance direction along the substrate conveying mechanism; and a second film formation source configured to form a second thin film on a roller circumferential surface of the film formation roller. The film formation roller is placed so that a surface of the second thin film is joined in a face-to-face manner to a surface of the first thin film formed on the substrate. The substrate receiving mechanism winds thereon or stores therein the substrate, the first thin film, and the second thin film which have been integrated together. The second thin film is formed to a greater thickness and/or at a higher deposition rate than the first thin film. | 12-04-2014 |
20140356729 | Metal Accumulation Inhibiting And Performance Enhancing Supplement And A System For Delivering The Supplement - The invention relates to a metal accumulation inhibiting and performance enhancing isolated or synthesized supplement for use in or in association with rechargeable electrochemical energy storage cells, and a system for delivering the supplement including articles of plastic, articles containing plastic, articles similar to plastic, plastic containers, apparatus, porous electrodes, liquids and electrolytes, in particular, articles, apparatus, electrodes, insolating sheets, liquids and electrolytes associated with rechargeable electrochemical energy storage cells incorporating one or more supplements. An effective amount of the supplement typically exhibits foaming of an electrolyte, providing a visual indicator of activity in attenuating metal deposition on, and thereby reducing metal accumulation on, various surfaces in the rechargeable electrochemical storage cell. | 12-04-2014 |
20150010828 | SEPARATOR FOR ALKALINE BATTERY AND ALKALINE BATTERY - Provided is a separator for an alkaline battery, capable of suppressing reduction in the characteristics of the alkaline battery after storage. The separator for an alkaline battery is interposed between the cathode and anode of the alkaline battery, is used to isolate the active material of both electrodes, and is configured by including 20-90 mass % cellulose fiber and having the remainder being an alkali-resistance synthetic fiber. The cellulose fiber includes a dissolving pulp. | 01-08-2015 |
20150037685 | BATTERY CELL AND METHOD FOR MAKING BATTERY CELL - Embodiments provide a battery cell including a porous membrane, the porous membrane including transformed semiconductor material. The porous membrane separates a first half-cell from a second half-cell of the battery cell. The porous membrane comprises channels allowing ions and/or an electrolyte to move between the first half-cell and the second half-cell. | 02-05-2015 |
20150072241 | ELECTRODE ASSEMBLY - An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit having a same number of electrodes and separators alternately disposed and integrally combined is repeatedly disposed, or (b) a structure in which at least two kinds of radical units having a same number of electrodes and separators alternately disposed and integrally combined are disposed in a predetermined order, and a fixing part extending from a top surface along a side to a bottom surface thereof for fixing the cell stack part. The one kind of radical unit has a four-layered structure in which first electrode, first separator, second electrode and second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked, and each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure. | 03-12-2015 |
20150079478 | EELECTRODE BODY FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In an electrode body for use in non-aqueous electrolyte secondary battery, a first end of a separator is located more interiorly than one positive electrode end of a positive electrode plate in a width direction, located more exteriorly than one end of a coated positive electrode portion of the positive electrode plate, and located more exteriorly than one end of a coated negative electrode portion of a negative electrode plate. The first end of the separator is thicker than an intermediate portion. A second end of the separator is located more interiorly than an other negative electrode end of the negative electrode plate in the width direction, located more exteriorly than the other end of the coated positive electrode portion of the positive electrode plate, and located more exteriorly than an other end of the coated negative electrode portion of the negative electrode plate. The second end of the separator is thicker than the intermediate portion. | 03-19-2015 |
20150099189 | PASTING PAPER MADE OF GLASS FIBER NONWOVEN COMPRISING CARBON GRAPHITE - Embodiments of the invention provide a lead-acid battery having a positive electrode, a negative electrode, and a separator positioned between the electrodes to electrically insulate the electrodes. Battery includes a nonwoven fiber mat positioned adjacent an electrode. Mat includes a mixture of first glass fibers having diameters between 8 μm to 13 μm and second glass fibers having diameters of at least 6 μm and a silane sizing. An acid resistant binder bonds the glass fibers to form mat. A wetting component is applied to increase the wettability such that mat exhibits an average water wick height of at least 1.0 cm after exposure to water for 10 minutes. A conductive material is disposed on a surface of mat such that when mat is adjacent an electrode, the conductive material contacts the electrode. An electrical resistance of less than 100,000 ohms per square enables electron flow about mat. | 04-09-2015 |
20150111108 | SECONDARY BATTERY - Provided is a secondary battery adopting an all-solid-state secondary cell structure with a storage layer sandwiched between a positive electrode layer and a negative electrode layer and which is superior to a conventional secondary battery with respect to at least one of volume, manufacturing, and positioning. The present invention provides a secondary battery including a single-layer secondary cell having a folded structure that a sheet-shaped single-layer secondary cell with a storage layer sandwiched between a positive electrode layer and a negative electrode layer is folded in two or four. Here, it is preferable that a plurality of the single-layer secondary cells each having the folded structure are arranged in parallel and adjacent single-layer secondary cells each having the folded structure are electrically connected directly or via a positive electrode terminal member or a negative electrode terminal member, so that at least one of current capacity increasing and terminal voltage heightening is achieved. | 04-23-2015 |
20150118570 | NON-AQUEOUS ELECTROLYTE BATTERY, SEPARATOR, BATTERY PACK, ELECTRONIC DEVICE, ELECTROMOTIVE VEHICLE, POWER STORAGE APPARATUS, AND ELECTRIC POWER SYSTEM - Batteries, separators, battery packs, electronic devices, electromotive vehicles, power storage apparatus, and electric power systems are provided. In one embodiment, a battery includes a positive electrode, a negative electrode, and an electrolytic solution holding layer between the positive electrode and the negative electrode. The electrolytic solution holding layer includes a porous polymer compound, and an electrolytic solution is held in the porous polymer compound. The porous polymer compound includes a vinylidene fluoride polymer selected from the group consisting of (1) a vinylidene fluoride homopolymer and (2) a copolymer including a vinylidene fluoride monomer unit and a hexafluoropropylene monomer unit. The average molecular weight of the vinylidene fluoride polymer is 500,000 or more to less than 1.5 million, and the air permeability of the porous polymer compound is 500 seconds/100 cc or less. | 04-30-2015 |
20150132659 | ELECTRODE FOR ELECTRICITY-STORING DEVICE, ELECTRICITY STORING DEVICE EMPLOYING SUCH ELECTRODE, AND METHOD OF MANUFACTURING ELECTRODE FOR ELECTRICITY-STORING DEVICE - An electricity-storing device includes a first electrode, a second electrode of opposite polarity as the first electrode, and a separator. The first electrode includes a current collector foil, an active material layer formed on at least one surface of the current collector foil, and an electrical resistance layer formed on the at least one surface of the current collector foil so as to be adjacent to and in direct contact with the active material layer, at least a portion of an interface between the active material layer and the electrical resistance layer including a mixed phase where constituents from the active material layer and the electrical resistance layer intermingle; | 05-14-2015 |
20150318529 | LEAD-ACID BATTERY SEPARATORS, ELECTRODES, BATTERIES, AND METHODS OF MANUFACTURE AND USE THEREOF - New or improved battery separators for lead-acid batteries that include a carbon or mineral additive applied to the separator. In possibly preferred embodiments, the battery separator may include engineered carbon materials applied to the battery separator to modify sulfate crystal formation while decreasing the detrimental consequences of excessive gas evolution into the negative electrode itself. In one embodiment, a method of enhancing the lead-acid energy storage performance of a lead-acid battery may include delivering carbon to the negative active material surface of the battery separator where the carbon may effectively enhance charge acceptance and improve life cycle performance of a lead-acid battery. | 11-05-2015 |
20150325828 | CERAMIC COATING ON BATTERY SEPARATORS - The present invention relates generally to electrochemical energy storage devices such as Li-ion batteries, and more particularly to a method of providing uniform ceramic coatings with controlled thicknesses for separators in such storage devices. Some embodiments of the invention utilize a layer by layer coating of nano/micro-sized particles dispersed in a solvent, which can be aqueous or non-aqueous. Other embodiments of the invention utilize a dry process such as PVD for depositing a ceramic film on a porous polyolefin separator. According to certain aspects of the invention, advantages of this approach include the ability to achieve a denser more uniform film with better controlled thickness with less waste and higher yield than current ceramic coating technology. An advantage of a ceramic coated separator is increased safety of cells. | 11-12-2015 |
20150333314 | Method for Producing a Galvanic Element and Galvanic Element - A method for producing a galvanic element includes applying a first electrode to a substrate, applying a separator to the first electrode, and applying a second electrode to the separator. At least one of the electrodes is applied in the form of a composite electrode using an aerosol separation method. | 11-19-2015 |
20150364764 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The initial charge/discharge efficiency and cycle characteristics of a nonaqueous electrolyte secondary battery are improved. Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, a porous layer placed on the negative electrode, a separator, and a nonaqueous electrolyte. The porous layer has flat voids. The minor axis direction of each flat void is perpendicular to the plane direction of the porous layer and the major axis direction of the flat void is parallel to the plane direction of the porous layer. The ratio of the major axis to the minor axis of the flat void preferably ranges from 1.4 to 2.2. | 12-17-2015 |
20150380705 | METHOD FOR MANUFACTURING SEPARATION FILM AND THE SEPARATION FILM, AND BATTERY USING SAME - The present invention relates to a method for manufacturing a separator in which the tensile strength is enhanced and melt shrinkage is reduced by controlling elongation step from among the manufacturing steps thereof. Additionally, the present invention relates to a separator having superb winding processability as well as superb thermal stability due to the raised the tensile strength while maintaining a low rate of melt shrinkage. Furthermore, the present invention relates to an electrochemical battery having enhanced stability by utilizing a separator having high tensile strength and a low rate of melt shrinkage. | 12-31-2015 |
20160006009 | SEPARATOR HAVING HIGH TENSILE STRENGTH, MANUFACTURING METHOD THEREFOR, AND SECONDARY BATTERY INCLUDING SAME - The present invention relates to a method for manufacturing a separator for batteries, a separator manufactured by the method, and a secondary battery including the separator. More specifically, the present invention relates to a method for manufacturing a separator having enhanced tensile strength by performing a shutdown process stopping a stretch during a process of stretching a base film of the separator. | 01-07-2016 |
20160020436 | Safely Ingestible Batteries - A battery for use in electronic devices and which is safely ingested into a body and a related method of making the battery. The battery includes an anode, a cathode and a quantum tunneling composite coating. The quantum tunneling composite coating covers at least a portion of at least one of the anode or the cathode and provides pressure sensitive conductive properties to the battery including a compressive stress threshold for conduction. The compressive stress threshold may be greater than a pre-determined applied stress in a digestive tract of the body in order to prevent harm if the battery is ingested. The battery may include a waterproof seal that extends between the quantum tunneling composite coating and a gasket separating the anode and cathode to inhibit the battery from short circuiting in a conductive fluid below the compressive stress threshold. | 01-21-2016 |
20160043373 | LITHIUM-ION SECONDARY CELL AND METHOD FOR MANUFACTURING SAME - A lithium ion secondary battery includes a flat-shaped electrode group in which separators are interposed between a positive electrode and a negative electrode. The positive electrode has a positive electrode collector, a positive electrode mixture layer formed on a top surface of the positive electrode collector, and an insulating layer formed on the top surface of the positive electrode collector along an end portion of the positive electrode mixture layer. Further, a mixed layer, formed by mixing of a positive electrode mixture configuring the positive electrode mixture layer, and an insulator configuring the insulating layer, is interposed between the positive electrode mixture layer and the insulating layer. | 02-11-2016 |
20160056435 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME, AND SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A method of manufacturing a nonaqueous electrolyte secondary battery includes: preparing a separator substrate; forming a porous layer, which contains at least a fluorophosphate and a binder, on a surface of the separator substrate; preparing an electrode body by laminating a positive electrode and a negative electrode to face each other with a separator including the porous layer interposed therebetween, in which the separator is arranged such that the porous layer faces the positive electrode; preparing a battery assembly including the electrode body and a nonaqueous electrolyte; and charging the battery assembly at least once. | 02-25-2016 |
20160072120 | CATHODE MIXTURE, CATHODE, SOLID BATTERY AND METHOD FOR PRODUCING CATHODE MIXTURE, CATHODE AND SOLID BATTERY - Provided is a cathode mixture which can have both ion conductivity and electron conductivity and with which a solid battery having an excellent output characteristic can be obtained. | 03-10-2016 |
20160079007 | BINDER COMPOSITION FOR POWER STORAGE DEVICES - A binder composition for power storage devices comprising a polymer which contains at least 3 to 40 mass % of a first recurring unit derived from an unsaturated carboxylic acid ester having an alicyclic hydrocarbon group and 1 to 40 mass % of a second recurring unit derived from an α,β-unsaturated nitrile compound based on 100 mass % of the total of all recurring units. | 03-17-2016 |
20160079580 | OLEFIN RESIN MICROPOROUS FILM, SEPARATOR FOR BATTERIES, BATTERY, AND METHOD OF PRODUCING OLEFIN RESIN MICROPOROUS FILM - An olefin resin microporous film of the present invention is an olefin resin stretched film that contains an olefin resin and is characterized by having a long period of 27 nm or more measured by a small angle X-ray scattering method. | 03-17-2016 |
20160079581 | Multi-Region Battery Separators - Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries. | 03-17-2016 |
20160093913 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery (large size cell) that has high output (low resistance) and high capacity makes it possible to improve the cycle characteristics of a battery by controlling the balance of the resistance between positive and negative electrodes. The non-aqueous electrolyte secondary battery has a positive electrode which comprises an active material and a conductive aid, a negative electrode, and an electrolyte layer, and having battery capacity of 3 Ah or more and an absolute value of battery internal resistance of 30 mΩ or less, in which the non-aqueous electrolyte second battery is characterized in that the zeta (ζ) potential between the active material and the conductive aid is in the range of 0.3 mV to 2 mV as an absolute value. | 03-31-2016 |
20160149203 | Method for performing enrichment of an electrode of an electrochemical device with ionic species - Method for an electrochemical device electrode enrichment, with ionic-species, including steps of: providing a substrate with at least one stack including: a first current-collector covering at least part of the substrate, first electrode covering at least part of the first current-collector, the first electrode being in electric contact with the first current-collector, protective layer totally covering the first electrode and at least part of the first current-collector, the protective layer being electrically insulating and ionically conducting; immersing in an electrolytic solution: the substrate provided with stack, counter-electrode made from conducting material, the electrolytic solution including at least one ionic-species salt and/or counter-electrode including ionic-species, applying electric voltage or current, with voltage or current generator, between first current-collector and counter-electrode making the ionic-species migrate to the first electrode and enrich the first electrode with ionic-species, depositing a second electrode on the protective layer after enrichment of the first electrode with ionic-species. | 05-26-2016 |
20160156008 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY | 06-02-2016 |
20160156009 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY | 06-02-2016 |
20160164058 | MULTI-REGION BATTERY SEPARATORS - Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries. | 06-09-2016 |
20160185932 | PRODUCTION METHOD FOR POROUS POLYIMIDE RESIN FILM, POROUS POLYIMIDE RESIN FILM, AND SEPARATOR EMPLOYING SAME - A porous polyimide resin film having a high aperture ratio, and a method for producing a porous polyimide film. The method includes removing fine particles from a polyimide resin-fine particle composite film to obtain a porous polyimide resin film by either removing at least a part of a polyimide resin portion of the polyimide resin-fine particle composite film prior to removing the fine particles, or by removing at least a part of the porous polyimide resin film subsequent to removing the fine particles. | 06-30-2016 |
20160197372 | WELDING APPARATUS AND A WELDING METHOD FOR SEPARATOR OF ELECTRICAL DEVICE | 07-07-2016 |
20180026247 | MULTI-REGION BATTERY SEPARATORS | 01-25-2018 |
20190148694 | CERAMIC COATING ON BATTERY SEPARATORS | 05-16-2019 |