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Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers)

Subclass of:

429 - Chemistry: electrical current producing apparatus, product, and process

429122000 - CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
429142000 Having plural distinct components 319
429131000 Having electrode enclosing feature 48
429130000 Insulator structure is only spacer of the rod, button, strip, or frame type 6
429146000 Having electrode spacing projections 4
20120219843COMPOSITION, ENERGY STORAGE DEVICE, AND RELATED PROCESSES - A positive electrode composition is provided. The positive electrode composition includes at least one electroactive metal selected from the group consisting of titanium, vanadium, niobium, molybdenum, nickel, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead, iron, and zinc. The composition further includes sodium iodide, present in an amount in a range from about 0.1 weight percent to about 0.9 weight percent, based on the weight of the positive electrode composition; a first alkali metal halide; and an electrolyte salt comprising a reaction product of a second alkali metal halide and an aluminum halide, wherein the electrolyte salt has a melting point of less than about 300 degrees Celsius. Related devices, such as a UPS device, also form embodiments of this invention.08-30-2012
20110177375REINFORCED BATTERY SEPARATOR - Separators for use in batteries are disclosed. In various embodiments, the separators include one or more of raised shoulders, ribs in three or more sizes, thickened mini-ribs on shoulders, and ribs within the shoulder. The disclosed separators are more resistant to failure due to punctures or tears than conventional separators.07-21-2011
20090197160STACK TYPE BATTERY - A stack type battery has a stacked electrode assembly (08-06-2009
20120263995BATTERY MODULE AND BATTERY PACK - A battery module in which a plurality of cells are aligned includes a holder in which the cells are accommodated, a positive electrode current collector plate which is provided to face positive electrode terminals of the cells and electrically connects the positive electrode terminals, and a negative electrode current collector plate which is provided to face negative electrode terminals of the cells and electrically connects the negative electrode terminals, wherein the holder includes a plurality of accommodation sections, the cells are accommodated in the accommodation sections, a spacer made of an elastic member is disposed between the positive electrode current collector plate and the cells, the spacer further includes an extended portion extending toward the negative electrode terminals of the cells, and an edge of the extended portion close to the negative electrode terminals touches the negative electrode current collector plate.10-18-2012
Entries
DocumentTitleDate
20090042097NEGATIVE ELECTRODE CURRENT COLLECTOR FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery includes a negative electrode that is shaped like waves in a section in the thickness direction. In the negative electrode, the ratio t02-12-2009
20100099021BAG-LIKE SEPARATOR, ELECTRODE SEPARATOR ASSEMBLY, AND METHOD OF PRODUCING ELECTRODE SEPARATOR ASSEMBLY - Four sides of a rectangular bag-like separator 04-22-2010
20090155677SEPARATOR FOR NON-AQUEOUS RECHARGEABLE LITHIUM BATTERY - A separator for non-aqueous rechargeable lithium batteries and a non-aqueous rechargeable lithium battery including the separator are provided. The separator includes a separator body and a composite including an organic compound and an inorganic compound supporting the separator body, where the organic compound has a higher melting point than that of the material composing the separator body, and the inorganic compound includes an element selected from the group consisting of 1A, 2A, 3A, 4A, 3B, and 5B elements from the periodic table, and combinations thereof, and at least one moiety selected from the group consisting of oxides, hydroxides, carbonates, phosphates, sulfates, nitrates, alkoxides, and combinations thereof.06-18-2009
20090155676Anode protective layer compositions for lithium metal batteries - The present invention provides a battery cell, comprising: (a) an anode comprising an active metal or a metal ion storage material (e.g., an intercalation compound that accommodates lithium ion); (b) a cathode structure; and (c) an ionically conductive protective layer on a surface of the anode and interposed between the anode and the cathode structure. This protective layer comprises a porous membrane having pores therein and a soft matter phase disposed in at least one of the pores, wherein the soft matter phase comprises oxide particles dispersed in a non-aqueous alkali, alkaline, or transition metal salt solution. Most preferably, this battery cell is a lithium metal secondary cell that is essentially free from dendrite and exhibits a safer and more stable cycling behavior. Such a high-capacity rechargeable battery is particularly useful for powering portable electronic devices and electric vehicles.06-18-2009
20100009249SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND MULTILAYER SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A separator of the present invention for a nonaqueous electrolyte secondary battery is obtained by fluorinating a polyolefin based resin. A contact angle of the separator with a nonaqueous solvent electrolyte is 40° or less a shutdown temperature of the separator is 170° C. or less. Further, a multilayered separator of the present invention for a nonaqueous electrolyte secondary battery includes a plurality of layers, at least one of which is the foregoing separator for a nonaqueous electrolyte secondary battery. These separators for nonaqueous electrolyte secondary battery have both a favorable electrolyte-retaining characteristic and a suitable shutdown performance.01-14-2010
20100092853ALKALINE BATTERY SEPARATOR, PROCESS FOR PRODUCTION THEREOF AND ALKALINE BATTERIES - An alkaline battery separator comprises a fused fiber layer, and a fine fiber layer adjacent to the fused fiber layer and comprising fine fibers and second fusible fibers, which are fused in the fine fiber layer, wherein part of the fine fibers are incorporated into the fused fiber layer, so that in determining a delamination strength between the fused fiber layer and the fine fiber layer, delamination occurs in the fine fiber layer and therefore the determination results in failure. A process for manufacturing the separator includes preparing a fused fiber sheet, preparing a slurry containing fine fibers and second fusible fibers, scooping up the slurry with the fused fiber sheet, to thereby incorporate part of the fine fibers into the fused fiber sheet, and fusing the second fusible fibers in the fused fiber sheet.04-15-2010
20090123824ALKALINE PRIMARY BATTERY - An alkaline primary battery of the present invention includes a positive electrode containing at least one of manganese dioxide and nickel oxyhydroxide; a negative electrode containing zinc; a separator disposed between the positive electrode and the negative electrode; an alkaline electrolyte; a battery case for housing the positive electrode, the negative electrode, the separator, and the alkaline electrolyte; a sealing plate for sealing the opening portion of the battery case; a resin-made gasket disposed between the battery case and the sealing plate; and a negative electrode current collector inserted in the negative electrode and the gasket. Between the battery case and the gasket, a sealing agent is applied. The sealing agent includes a mixture of a hot-melt resin with a weight average molecular weight of 1000 to 3000 and a softening point of 95 to 160° C.; and polybutene with a number average molecular weight of 300 to 700 and a kinematic viscosity at 40° C. of 10 to 1000 mm05-14-2009
20090123822Multi-Layer Microporous Membrane, Battery Separator And Battery - The present invention relates to a particular multi-layer microporous membrane having a good balance of important properties, including excellent electrochemical stability and low heat shrinkage, while maintaining high permeability and heat resistance, with good mechanical strength, compression resistance and electrolytic solution absorption. Of particular importance when used as a battery separator, the present multi-layer microporous membrane exhibits excellent heat shrinkage, melt down temperature and thermal mechanical properties, i.e. low maximum shrinkage in the molten state. The multi-layer microporous membrane of the present invention can be produced (or manufactured) by layering, such as for example by coextrusion, one or more microporous membrane second layers and one or more microporous membrane first layers, such as on one or both sides of a second layer. The invention further relates to battery separators comprising the multi-layer microporous membrane and batteries utilizing the battery separators.05-14-2009
20090123823ELECTRIC STORAGE DEVICE - An electric storage device 05-14-2009
20130052509LITHIUM ION BATTERY WITH ELECTROLYTE-EMBEDDED SEPARATOR PARTICLES - A lithium ion battery in which electrically-non conducting ceramic particles are interposed between the anode and cathode to enforce separation between them and prevent short circuits is described. The particles, preferably equiaxed or monodisperse, may be generally uniformly dispersed in a non-aqueous gelled or high viscosity electrolyte. The electrolyte may be applied to one or both of the anode and cathode in suitable thickness to deposit the particles with the electrolyte and form a layered composite with substantially uniformly spaced particles suitable for holding the opposing anode and cathode faces in spaced-apart relation. The thickness of the applied electrolyte layer will be selected to enable deposition of the particles substantially as a fractional monolayer, a monolayer, or a multilayer as required for the application.02-28-2013
20110003189POROUS FILM MATERIAL COMPRISING AT LEAST ONE CARBONACEOUS SEMIMETAL OXIDE PHASE, AND USE THEREOF AS A SEPARATOR MATERIAL FOR ELECTROCHEMICAL CELLS - The present invention relates to a novel porous film material which comprises at least one carbonaceous semimetal oxide phase, and to a process for production thereof. The invention also relates to the use of these porous film materials as a separator layer or for production of such separator layers in electrochemical cells, particularly in lithium cells and especially in lithium secondary cells.01-06-2011
20110020691ALKALINE BATTERY - The present invention provides an alkaline battery which has high reliability and high cost performance and does not cause an internal short circuit resulting from gel leakage even when the filling densities of the positive and negative electrodes are reduced. In the alkaline battery, a positive electrode 01-27-2011
20090087728BATTERIES HAVING INORGANIC/ORGANIC POROUS FILMS - An electrochemical cell, such as Li-Ion, having (a) a positive electrode; (b) a negative electrode, (c) a porous inorganic/organic composite layer interposed between the positive electrode and the negative electrode, and (d) an electrolyte comprising a lithium salt and a non-aqueous solvent. The composite layer includes inorganic nanoparticles and a binder to form a nanocomposite separator (NCS). In addition to the composite layer, the electrochemical cell includes a porous separator.04-02-2009
20090169985ELECTROLYTIC SOLUTION, SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME, AND SULFONE COMPOUND - A battery capable of improving the cycle characteristics is provided. The battery includes a cathode and an anode oppositely arranged with a separator in between, and an electrolytic solution. At least one of the cathode, the anode, the separator, and the electrolytic solution contains a sulfone compound having an acid anhydride group and a sulfonyl group.07-02-2009
20090130546Battery module and its method of manufacture - A rechargeable battery that prevents a concentration of stress on a coupling portion of a lead tab and a cap assembly at a time of bending the lead tab so as to not damage the coupling portion includes: an electrode assembly having a first electrode, a second electrode, and a separator interposed between the first and second electrodes; a case to receive the electrode assembly and having an open top portion; a cap assembly arranged on the top portion of the case; a lead tab having one end affixed to the cap assembly to electrically connect the cap assembly to the first electrode; and a stopper fixed to the cap assembly and having one end arranged on the lead tab, the stopper allowing a portion of the lead tab contacting the one end of the stopper to be bent when the lead tab is bent.05-21-2009
20090098447RESIN COMPOSITION FOR FUEL CELL SEPARATOR, AND FUEL CELL SEPARATOR - The present invention provides a resin composition for fuel cell separator, comprising: (A) an epoxy resin; (B) a curing agent; (C) a curing accelerator; and (D) a carbon material, wherein the epoxy resin (A) or the curing agent (B) has a softening temperature of from 40 to 90° C., and wherein the carbon material (D) comprises a low crystalline artificial graphite having an average particle diameter of from 60 to 500 μm in an amount of from 5 to 100% by mass of the carbon material (D).04-16-2009
20100112430Electrochemical Cells Employing Expandable Separators - An electrochemical cell is provided comprising a first electrode and a second electrode. A separator, which includes an expansion joint, surrounds and seals the first electrode. The separator may comprise a first major surface and a second major surface substantially opposite the first major surface, and the expansion joint may be coupled between the first major surface and the second major surface.05-06-2010
20100266888Spacing Element for Lead Gel Batteries or for Lead-Acid Batteries - Spacing element for lead batteries with gel electrolyte or for lead-acid batteries, comprising at least one layer of non-woven fabric made from fibers of one or more organic polymers suitable to absorb said electrolyte. Said layer will be associated to a separating element placed between the two electrodes of inverse polarity.10-21-2010
20110151307RECHARGEABLE BATTERY - A rechargeable battery comprises: an electrode assembly comprising a plurality of positive electrode plates, a plurality of negative electrode plates, and a plurality of separators; and a case enclosing the electrode assembly; wherein each separator in the plurality of separators comprises a central portion facing at least one of the positive and negative electrode plates, and an extended portion that extends past the positive and negative electrode plates, and wherein each of the extended portion comprises an adhered portion that is adhered to adjacent extended portions.06-23-2011
20090169984COMPOSITE SEPARATOR FILMS FOR LITHIUM-ION BATTERIES - A composite separator film using polyethylene terephthalate (PET) substrate coated with an organic polymeric film to reduce apertures and pores disposed about the substrate. The organic polymeric film includes an organic polymeric material having high thermal stability and low shrinkage rate. The organic polymeric film can also include a plasticizer to distribute and render the apertures and pores more uniform. The resulting composite separator film can serve to divide the cathode and anode terminals of a lithium-ion battery with enhanced capacity and discharge rate at various current densities and temperatures.07-02-2009
20090104515LITHIUM SECONDARY BATTERY - A lithium secondary battery of this invention includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; a separator; and a non-aqueous electrolyte. The negative electrode active material includes a first portion capable of absorbing and desorbing lithium ions and a second portion covering at least a part of a surface of the first portion. The second portion includes at least one material that is less reactive with oxygen than the first portion.04-23-2009
20100136409Battery cell with a partial dielectric barrier for improved battery pack mechanical and thermal performance - The adverse effects of the dielectric material covering the cylindrical case of a conventional 18650 cell are eliminated by replacing it with a ring-shaped dielectric material, wherein the ring-shaped dielectric material does not extend down or otherwise cover the cylindrical outer surface of the cell's casing. The ring-shaped dielectric material provides access to the battery terminal corresponding to the cap assembly while preventing shorting between the battery terminal and the edge of the cell casing.06-03-2010
20080274398Electrode assembly and secondary battery having the same - An electrode assembly and a secondary battery including the same. The electrode assembly is constructed with a positive electrode plate including a positive electrode coating portion, a negative electrode plate including a negative electrode coating portion, a separator interposed between the positive electrode plate and the negative electrode plate, and at least one mesh layer disposed on at least one of the positive electrode plate and the negative electrode plate. The mesh layer is wider than either the positive electrode coating portion or the negative electrode coating portion to prevent a detachment of either the positive electrode coating portion or the negative electrode coating portion. Since the mesh layer prevents the detachment of the electrode coating portions when subjected to an external impact, it is possible to improve the stability and reliability of a battery.11-06-2008
20080280197SPIRALLY WOUND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A spirally-wound non-aqueous electrolyte secondary battery including a staked electrode assembly is disclosed. The stacked electrode assembly has first and second current collectors facing region disposed at a winding start end and at a winding terminal end, respectively. A positive electrode current collector exposed portion and a negative electrode current collector exposed portion face each other through the separator in each of the first and second current collector facing regions. At least one of the positive or negative electrode current collector exposed portion has a first insulating member formed thereon in the first current collector facing region at the winding start end. At least one of the positive or negative electrode current collector exposed portion has a second insulating member formed thereon in the second current collector facing region at the winding terminal end. The second insulating member has a melting point lower than that of the first insulating member.11-13-2008
20080286646Electrolytes for Lithium Ion Batteries and Their Fabrication Methods - Electrolytes for lithium ion batteries are provided. The electrolytes include lithium salts, organic solvents and additives. In particular, the additives include halogeno-benzene and/or its homologs, the S═O bond compounds, biphenyl and/or its homologs, phenylcyclohexane and/or its homologs, teraklylbenzenes, and di-cycladipate and/or its homologs. Lithium ion batteries using said electrolytes exhibit improved overcharging safety properties, high temperature storage stability properties and cycle life properties simultaneously.11-20-2008
20080233473MEMBRANE AND METHOD FOR MAKING THE SAME - A membrane includes a fiber material (e.g., in fabric form) and an agar material distributed so as to surround the fiber material. Another membrane includes an agar material and a fiber material (e.g., non-woven fibers) dispersed in the agar. Moreover, a method for making the membrane includes the steps of: (a) mixing the agar material with water to form a slurry of agar; (b) immerging a fiber material into the slurry of agar to form a pre-composite; (c) molding the pre-composite to form a composite and solidifying the composite to obtain the membrane.09-25-2008
20090162745ALKALINE BATTERY - An alkaline battery of the present invention includes a positive electrode, a negative electrode containing zinc particles or zinc alloy particles, and an alkaline electrolyte solution, wherein the ratio of the zinc particles or zinc alloy particles of the negative electrode capable of passing through a 200-mesh sieve is 10 to 80% by mass, and the ratio of a negative electrode capacity to a positive electrode capacity is 1.05 to 1.10. Furthermore, it is preferred that the ratio of the negative electrode capacity to the positive electrode capacity is 1.08 or less.06-25-2009
20090029242BATTERY PACK - A battery pack (01-29-2009
20090181293AA ALKALINE BATTERY - An AA alkaline battery includes: a positive electrode; a negative electrode; a separator; and an alkaline electrolyte. The negative electrode contains 4.0 g or more of zinc as an active material and an indium compound in the range from 50 ppm to 1000 ppm, both inclusive, with respect to the weight of zinc. Zinc contained in the negative electrode includes zinc particles which has a size of 200 meshes or less and is in the range from 20 wt. % to 50 wt. %, both inclusive, with respect to the weight of zinc contained in the negative electrode.07-16-2009
20090075165CATHODE AND LITHIUM BATTERY INCLUDING THE SAME - A cathode active material composition of a cathode of a lithium battery includes a conducting agent, a binder, and a cathode active material coated on one surface of a current collector, wherein the cathode active material composition is coated with a vanadium oxide.03-19-2009
20100178544POLYOLEFIN MICROPOROUS MEMBRANE BASE FOR NONAQUEOUS SECONDARY BATTERY SERARATOR, METHOD FOR PRODUCING THE SAME, NONAQUEOUS SECONDARY BATTERY SEPARATOR AND NONAQUEOUS SECONDARY BATTERY - A nonaqueous secondary battery separator is provided that is excellent in heat resistance, shutdown characteristics, membrane resistance and handling property. The present invention is a polyolefin microporous membrane used for a nonaqueous secondary battery separator containing the polyolefin microporous membrane at least one surface of which is coated and integrated with a heat resistant porous layer, characterized in that the membrane has (A) a thickness of 5 to 20 μm, (B) a porosity of 35 to 50%, (C) an air permeability per unit thickness (JIS P8117) of 10 to 30 sec/100 cc·μm and a total air permeability of the membrane (JIS P8117) of 400 sec/100 cc or less, and (D) Y/X of 1×1007-15-2010
20100227210NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a non-aqueous electrolyte secondary battery and a manufacturing method thereof. An object of the present invention is to obtain a non-aqueous electrolyte secondary battery that has an improved non-aqueous electrolyte impregnation ability into a flat wound electrode group that includes a porous insulating layer that contains inorganic oxide particles and a binder, little deterioration of charge/discharge cycle characteristics, high voltage discharge ability and favorable productivity.09-09-2010
20100035140ELECTRODE PLATE FOR BATTERY, ELECTRODE GROUP FOR BATTERY, LITHIUM SECONDARY BATTERY, AND METHOD FOR PRODUCING ELECTRODE PLATE FOR BATTERY - In an electrode plate 02-11-2010
20110117413Alkaline Battery Separators with Ion-Trapping Molecules - Battery separators are disclosed which include an ion selective polymeric film, composite film, or multi-layer containing an immobilized chelating agent.05-19-2011
20100316902Microporous Multilayer Membrane, System And Process For Producing Such Membrane, And The Use Of Such Membrane - The invention relates to a microporous membrane having an improved balance of important properties such as melt down temperature and thickness fluctuations. The invention also relates to a system and method for producing such a membrane, the use of such a membrane as a battery separator film, batteries containing such a membrane, and the use of such batteries as a power source in, e.g., electric and hybrid electric vehicles.12-16-2010
20090068554SEPARATOR FOR LEAD-ACID RECHARGEABLE BATTERY - A separator for separation of opposite-polarity electrode plates in a lead-acid rechargeable battery includes two separator leaves connected together at rim areas which rest on one another to form a pocket which is open on one side for insertion of an electrode plate. A basic material thickness of the separator leaves at the rim areas increases from an outer edge of a rim area in the direction of the contact area of the separator leaf for an electrode plate, and the basic material thickness in the rim area adjacent to the contact area is greater than the basic material thickness in the contact area.03-12-2009
20100136410SEPARATOR FOR LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - A separator for a lithium ion secondary battery with an alloy based negative electrode, wherein a dynamic friction coefficient of at least one surface is 0.1 or more and 0.4 or less, and a method for manufacturing the same.06-03-2010
20090311588ELECTRODE ASSEMBLY AND SECONDARY BATTERY HAVING THE SAME - An electrode assembly for a battery. The electrode assembly includes a positive electrode with a positive electrode active material layer and a negative electrode with a negative electrode active material layer. The assembly further includes a separator that has a porous layer formed of a ceramic material and a binder and a polyolefin resin layer. The porous layer has a thickness of about 4 to 6 μm and the polyolefin resin layer has a thickness of about 12 to 16 μm12-17-2009
20100003588SEPARATOR FOR ENERGY DEVICE AND ENERGY DEVICE HAVING THE SAME - Disclosed is a separator for energy devices, which hardly allows an internal short circuit, while excellent in electrolyte solution retention. Also disclosed is an energy device comprising such a separator. Specifically disclosed is a separator for energy devices, which comprises a nonwoven fabric laminate composed of two or more melt-blown nonwoven fabric layers arranged on top of one another. Each of the melt-blown nonwoven fabric layers has an average fiber diameter of 0.5-3 μm, and the weight per square meter of the nonwoven fabric laminate is not more than 50 g/m01-07-2010
20100015514LITHIUM SECONDARY BATTERIES AND NONAQUEOUS ELECTROLYTE FOR USE IN THE SAME - A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output.01-21-2010
20110159343MICROPOROUS POLYMERIC MEMBRANES, METHODS FOR MAKING SUCH MEMBRANES, AND THE USE OF SUCH MEMBRANES AS BATTERY SEPARATOR FILM - A microporous membrane includes polyolefin, and has a shutdown temperature ≦133.0° C. and a self-discharge capacity ≦110.0 mAh.06-30-2011
20090029243Battery and Method for Manufacturing Battery - A battery (01-29-2009
200901426563-D MICROBATTERIES BASED ON INTERLACED MICRO-CONTAINER STRUCTURES - An electrical energy storage device (06-04-2009
20080254355NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A lithium ion secondary battery includes a positive electrode, a negative electrode, a porous insulating layer and a nonaqueous electrolyte. The porous insulating layer is provided between the positive electrode and the negative electrode and contains a material which does not have a shutdown function. Each of the positive electrode and the negative electrode includes an expandable element.10-16-2008
20100330410NONAQUEOUS ELECTROLYTE RECHARGEABLE BATTERY - A nonaqueous electrolyte secondary battery according to the present invention includes: a negative-electrode current collector 12-30-2010
20100159318LAMINATED POROUS FILM - Provided is a laminated porous film comprising a laminate of a heat-resistant porous layer containing a heat-resistant resin and a shutdown layer containing a thermoplastic resin, wherein the film has a free chlorine content of 1×1006-24-2010
20100068612SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, PROCESS FOR PRODUCING SAME, AND NON-AQUEOUS SECONDARY BATTERY - A first object of the present invention is to provide a separator including a polyethylene microporous membrane and a heat-resistant porous layer, and that has a sufficient shutdown function and a sufficient heat resistance, and can be formed with a reduced thickness and can overcome the problem of slidability. A first aspect of the present invention is a separator for a non-aqueous secondary battery. The separator includes a microporous membrane of primarily polyethylene, and a heat-resistant porous layer of a primarily heat-resistant polymer formed on at least one surface of the microporous membrane. (1) The microporous membrane has a Gurley number of 25 to 35 sec/100 cc·μm per unit thickness. (2) The heat-resistant porous layer contains inorganic fine particles having an average particle diameter of 0.1 to 1.0 μm. (3) The inorganic fine particles are 40% to 80% in volume with respect to a total volume of the heat-resistant polymer and the inorganic fine particles. (4) The heat-resistant porous layer has a total thickness of 3 to 12 μm.03-18-2010
20100068613NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes: a positive electrode including a transition metal oxide capable of absorbing and desorbing lithium ions; a negative electrode capable of absorbing and desorbing lithium ions; a separator; and a non-aqueous electrolyte. A polyamide film or a porous film containing an inorganic oxide is disposed at least between the positive electrode and the negative electrode, and an unsaturated sultone is added to the non-aqueous electrolyte. This can suppress deterioration in the rate characteristics of the non-aqueous electrolyte secondary battery after storage at a high temperature and improve the storage characteristics of the battery, while maintaining the initial rate characteristics of the battery.03-18-2010
20090214943ELECTRICAL CONNECTION FOR A STORAGE CELL - An electrical storage cell is provided comprising a container (08-27-2009
20090176151ELECTRODE ASSEMBLY AND LITHIUM SECONDARY BATTERY HAVING THE SAME - A lithium secondary battery including an electrode assembly that includes a positive electrode including a positive electrode active material layer, a negative electrode including a negative electrode active material layer, and a separator disposed between the negative electrode and the positive electrode. The negative electrode active material layer includes a metallic material capable of forming an alloy with lithium, and the separator including a porous layer comprising a ceramic material and a binder. The separator is formed to a thickness that is 7 to 20% of the thickness of the negative electrode active material layer. The binder makes up 5 to 20% of the weight of the porous layer.07-09-2009
20100021807ENERGY STORAGE DEVICE - Disclosed is an energy storage device, in which an electrode material including an aqueous solvent, a binder and a transition metal oxide containing lithium is used to form one electrode, and an electrode material including activated carbon is used to form the other electrode. In particular, the energy storage device ensures reliability and maximum capacitance efficiency by optimizing density and thickness values of the electrode materials for the cathode electrode and the anode electrode.01-28-2010
20100178545MICROPOROUS POLYMER SEPARATORS FOR LITHIUM ION BATTERIES AND METHOD FOR PRODUCING THE SAME - Provided are separators used in power accumulators such as lithium ion secondary batteries and a preparation method thereof. The said separators are obtained through following steps: providing a polymer colloidal emulsion through a polymerization reaction of polyvinyl alcohol, hydrophobic monomer and hydrophilic monomer in water solution initiated by an initiator; coating a plastic substrate with the said polymer colloidal emulsion using tape-casting method; drying the plastic substrate coated with the polymer colloidal emulsion, and then obtaining the said separators by delaminating them from the substrate. The said separators have good liquid absorbability, high liquid absorption rate and retention, low resistivity, good mechanical strength and good thermal stability (little thermal shrinkage and little size distortion) as well as electrochemical stability. The prepared lithium ion batteries have good cycle stability and long service life.07-15-2010
20100173187SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS SECONDARY BATTERY - The present invention is to provide a separator that is excellent in heat resistance, shutdown function, flame retardancy and handling property. The separator for a nonaqueous secondary battery of the invention is a separator for a nonaqueous secondary battery that has a polyolefin microporous membrane at least one surface of which is laminated with a heat resistant porous layer containing a heat resistant resin, and is characterized by containing an inorganic filler containing a metallic hydroxide that undergoes dehydration reaction at a temperature of 200 to 400° C.07-08-2010
20100173186ORGANIC ELECTROLYTE FOR LITHIUM-ION BATTERY AND LITHIUM-ION BATTERY COMPRISING THE SAME - Disclosed are an organic electrolyte for a lithium-ion battery and a lithium-ion battery comprising the same, wherein the electrolyte includes a base electrolyte containing a lithium salt dissolved in an organic solvent, and diphenyloctyl phosphate added thereto in an amount of 0.1 to 20 wt %. As compared to a conventional organic electrolyte using only a carbonate ester-based solvent, such as ethylene carbonate, ethyl methyl carbonate, etc., the lithium-ion battery employing the organic electrolyte can improve thermal stability of an electrolyte solution, high-rate performance, and charge/discharge cyclability of a battery, while maintaining battery performance of the base electrolyte.07-08-2010
20090186267Porous silicon particulates for lithium batteries - An anode structure for lithium batteries includes nanofeatured silicon particulates dispersed in a conductive network. The particulates are preferably made from metallurgical grade silicon powder via HF/HNO07-23-2009
20080248382Deposited Microarchitectured Battery and Manufacturing Method - A battery includes a first portion including a substrate having formed thereon a current collector and an anode electrode material. A second portion is formed on a substrate and includes a current collector and a cathode electrode material. The first portion is joined to the second portion and a separator is disposed between the first portion and the second portion as joined to separate the anode electrode material from the cathode electrode material. An electrolyte is placed in contact with the anode electrode material, the cathode electrode material and the separator.10-09-2008
20090136835LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery comprises a case; a positive electrode foil having a current collector foil on which a positive electrode material is coated; an negative electrode film having a current collector film on which an negative electrode material is coated; a separator sandwiched between the positive electrode film and the negative electrode film, the films and the separator being arranged in multiple layers to form a group of electrodes enclosed in the case, a positive collector disc plate connected to the positive electrode side of the group of the electrodes, and an negative collector disc plate connected to the negative electrode side of the group of the electrodes. Each of the current collector foils has a non-coated portion extended along one side of the foils, a part or the entire of the non-coated portion being exposed from a side of the separator. At least one of the collector disc plate is welded to the side of the exposed non-coated portion of the group of the electrodes. The periphery of the collector disc plate has an annular portion, which is bent towards the group of electrodes.05-28-2009
20120070712BATTERIES UTILIZING ANODE COATINGS DIRECTLY ON NANOPOROUS SEPARATORS - Provided is a separator/anode assembly for use in an electric current producing cell, wherein the assembly comprises an anode current collector layer interposed between a first anode layer and a second anode layer and a porous separator layer on the side of the first anode layer opposite to the anode current collector layer, wherein the first anode layer is coated directly on the separator layer. Also provided are methods of preparing such separator/anode assemblies.03-22-2012
20120077070COMPOSITION AND ENERGY STORAGE DEVICE - A cathode composition is provided. The cathode composition includes at least one electroactive metal, wherein the electroactive metal is at least one selected from the group consisting of titanium, vanadium, niobium, molybdenum, nickel, iron, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead and zinc; a first alkali metal halide; an electrolyte salt comprising a reaction product of a second alkali metal halide and a metal halide, wherein the electrolyte salt has a melting point of less than about 300 degrees Centigrade; and a metal chlorosulfide compound having a formula (I) M03-29-2012
20090098448COMPOSITE NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PREPARING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY INCLUDING THE SAME - The present invention can provide a composite negative electrode active material including a fused matter of a graphite material and a graphitizable carbon material undergoing graphitization. Such a composite negative electrode active material is prepared by heating a mixture of a graphite material and a graphitizable carbon material undergoing graphitization at 700° C. to 1300° C., and crushing the obtained fused matter. The use of the composite negative electrode active material makes it possible to provide a non-aqueous electrolyte secondary battery being excellent in output-input characteristics and having a high energy density and a long life.04-16-2009
20100291430SEPARATOR HAVING POROUS COATING LAYER AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - A separator includes a porous substrate having a plurality of pores, and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a plurality of filler particles and a binder polymer. The filler particles include electrode active material particles that are electrochemically oxidized and reduced. The binder polymer includes a copolymer having (a) a first monomer unit with a contact angle to water of 0 to 49° and (b) a second monomer unit with a contact angle to water of 50 to 130°. This separator is useful for an electrochemical device, particularly a lithium secondary battery. This separator ensures improved thermal stability and increased capacity of the electrochemical device. Also, inorganic particles in the porous coating layer formed on the porous substrate are not disintercalated due to excellent peeling resistance of the porous coating layer while the electrochemical is assembled.11-18-2010
20090017370Electrochemical Cell with Singular Coupling and Method for Making Same - An electrochemical cell (01-15-2009
20080299450LITHIUM SECONDARY BATTERY - A lithium secondary battery that can improve safety of the battery. The lithium secondary battery comprises a jelly-roll type electrode assembly including first and second electrode plates having different polarities, and a separator interposed between the electrode plates. A porous ceramic film is coated on an active material of the first electrode plate, and the porous ceramic film is coated on one surface of an active material uncoated part of the first an outmost electrode plate and the porous ceramic film is not coated on another surface thereof.12-04-2008
20080248381Ceramic Separator for Electrochemcial Cells With Improved Conductivity - Separator for an electrochemical cell comprising a flexible perforate carrier having a ceramic coating on and in the carrier, the ceramic coating comprising from 75 to 99 parts by mass of oxidic particles selected from particles of ZrO10-09-2008
20080233474Rechargeable battery and its fabrication method - A rechargeable battery and its fabrication method prevents electrical shorts between the electrode plates by decreasing shrinkage of the separator, the battery includes: an electrode assembly including: a wound electrode jelly roll having a first electrode plate with a first electrode tab attached thereto, a second electrode plate with a second electrode tab attached thereto and a separator interposed between the first electrode plate and the second electrode plate, and an upper tape arranged to surround an upper end of the electrode jelly roll where the first electrode tab and second electrode tab extend outward therefrom; a case having an upper end opening arranged to receive the electrode assembly and an electrolyte; and a cap assembly arranged to seal the upper end opening of the case after the electrode assembly has been received in the case; the upper tape 1I is attached to the upper end of the electrode jelly roll and surrounds the separator adjacent to an end of an innermost electrode plate of the first and second electrode plates.09-25-2008
20100035141Enhanced Electrolyte Percolation in Lithium Ion Batteries - New lithium ion batteries and methods useful in making lithium ion batteries and/or components thereof are provided. The present lithium ion batteries and/or components thereof are structured to allow enhanced ion diffusion into and out of an active material through an electrolyte and to provide enhanced heat transfer out of the active material. The present methods provide electrodes with enhanced porosity without employing a separate porosity additive or a separate electrolyte percolation additive.02-11-2010
20110311854Electrochemical Cell Electrode With Sandwich Cathode And Method For Making Same - An electrochemical cell comprising an anode, and a cathode of a first cathode active material contacted to a first side of a current collector and a second cathode active material contacted to a second side of the current collector thereby forming an elongated cathode sheet. The first cathode active material has a first energy density and first rate capability, and the second cathode active material has a second energy density and a second rate capability. The first energy density of the first material is less than the second energy density of the second material, while the first rate capability of the first material is greater than the second rate capability of the second material. The elongated cathode sheet is folded onto itself to form a sandwich cathode having the configuration of: first cathode active material/current collector/second cathode active material/second cathode active material/current collector/first cathode active material.12-22-2011
20120094167Separator for Non-Aqueous Lithium-Ion Battery - A method for manufacturing battery separators for use in a lithium-ion battery containing non-aqueous electrolytes, producing batteries being resistant to thermal runaway and explosion, includes the steps of preparing a dryblend comprising two UHMW Polyethylenes and Calcined Kaolin, feeding said dry-blend into an extruder, melt-kneading said dry blend in the extruder while feeding mineral oil, making a solution from a T-die into the form of a sheet, using casting rolls, thereby cooling the solution down, producing a thick gel sheet, stretching the gel sheet in both machine and transverse directions, producing a 20 micron thick gel sheet containing oil thereby, extracting the oil by use of a solvent and drying the film, heat-setting the film producing a microporous membrane.04-19-2012

Patent applications in class Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers)

Patent applications in all subclasses Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers)