| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 429251000 | And inorganic material | 23 |
| 20080274410 | Non-aqueous electrolyte secondary battery - A non-aqueous electrolyte secondary battery is provided that remarkably improves battery reliability by quickly lowering the potential of the positive electrode while preventing separator shrinkage at high temperatures. A separator has on its surface a shrinkage-prevention-layer formed portion ( | 11-06-2008 |
| 20090111025 | ORGANIC/INORGANIC COMPOSITE MICROPOROUS MEMBRANE AND ELECTROCHEMICAL DEVICE PREPARED THEREBY - Disclosed is an organic/inorganic composite porous separator comprising: (a) a polyolefin-based separator substrate; and (b) an active layer formed by coating at least one region selected from the group consisting of a surface of the substrate and a part of pores present in the substrate with a mixture of inorganic particles and a binder polymer, wherein the inorganic particles in the active layer are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a pore structure. A method for manufacturing the same separator and an electrochemical device including the same separator are also disclosed. An electrochemical device comprising the organic/inorganic composite porous separator shows improved thermal and electrochemical safety and quality, simultaneously. | 04-30-2009 |
| 20110281171 | ORGANIC/INORGANIC COMPOSITE POROUS FILM AND ELECTROCHEMICAL DEVICE PREPARED THEREBY - Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality. | 11-17-2011 |
| 20110294016 | POLYPROPYLENE RESIN COMPOSITION FOR USE IN FORMATION OF MICROPOROUS MEMBRANE - [Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and low thermal shrinkage ratio. | 12-01-2011 |
| 20120094184 | SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE INCLUDING SAME - The separator for an electrochemical device of the present invention includes inorganic fine particles and a fibrous material or microporous film. Primary particles of the inorganic fine particles can be approximated to a geometric shape, and a difference between a theoretical specific surface area and an actual specific surface area of the inorganic fine particles is within ±15% relative to the theoretical specific surface area, where the theoretical specific surface area of the inorganic fine particles is calculated from a surface area, a volume and a true density of the primary particles of the inorganic fine particles, which are determined through approximation of the primary particles of the inorganic fine particles to the geometric shape, and the actual specific surface area of the inorganic fine particles is measured by the BET method. | 04-19-2012 |
| 20120115036 | Method For Manufacturing Separator, Separator Manufactured By The Method And Method For Manufacturing Electrochemical Device Including The Separator - Disclosed is a method for manufacturing a separator. The method includes (S | 05-10-2012 |
| 20120251890 | CERAMIC MEMBRANE HAVING SUPPORT MATERIALS COMPRISING POLYARAMIDE FIBERS AND METHOD FOR PRODUCING SAID MEMBRANES - The present invention relates to a membrane comprising a flat, flexible substrate having a plurality of openings and having a porous inorganic coating situated on and in said substrate, the material of the substrate being selected from woven or non-woven, electrically non-conductive fibers, characterized in that the substrate comprises polyaramide fibers that are pure or connected to fibers of the further polymer or at least of one of these further polymers, wherein the fibers of at least one of said further polymers comprise a melting point that is lower than the decomposition point of the polyaramide fibers. | 10-04-2012 |
| 20130236793 | POROUS POLYOLEFIN RESIN FILM - The purpose is to provide a porous polyolefin resin film which has high gas permeability and a high porosity, and which can exhibit excellent properties including break down properties when used as a separator for a non-aqueous electrolyte secondary battery. The present invention relates to a porous polyolefin resin film which is produced from a resin composition (a) containing a polyolefin resin as the main component and additionally containing organic-inorganic hybrid particles (f). | 09-12-2013 |
| 20150017546 | FORMALDEHYDE FREE BINDER COMPOSITIONS CONTAINING METAL ION CROSSLINKERS AND PRODUCTS MADE THEREFROM - Formaldehyde-free binder compositions are described. The binder compositions may include a polycarboxy compound, and an organic crosslinking agent, and a polyvalent metal compound. The compositions may also optionally include a cure catalyst. In addition, composite materials are described. The composite materials may include a mat of fibers and a binder composition. The binder composition may include a polycarboxy compound, an organic crosslinking agent, and a polyvalent metal compound. | 01-15-2015 |
| 20150064572 | SEPARATORS FOR ELECTROCHEMICAL CELLS - Provided are separators for use in an electrochemical cell comprising (a) an inorganic oxide and (b) an organic polymer, wherein the inorganic oxide comprises organic substituents. Also provided are electrochemical cells comprising such separators. | 03-05-2015 |
| 20150111109 | MULTILAYER POROUS FILM, SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - There is provided a multilayer porous film that includes a covering layer formed from a coating liquid on at least one surface of a porous film. The coating liquid has high stability and coatability. The covering layer does not decrease the intrinsic high air permeability of the porous film and has high heat resistance and adhesiveness. The multilayer porous film has excellent handleability as a battery separator without causing curling. The multilayer porous film includes the covering layer on at least one surface of a porous polyolefin resin film. The covering layer is formed from a coating liquid and contains a filler and a resin binder. The multilayer porous film satisfies the following conditions 1) and 2): 1) the filler has an average circularity of 0.3 or more and less than 0.7; and 2) an acid component in the coating liquid has a first acid dissociation constant of 5 or less and has no second acid dissociation constant or a second acid dissociation constant of 7 or more in a dilute aqueous solution at 25° C. | 04-23-2015 |
| 20150349309 | DENSE FLUOROPOLYMER FILM - The present invention pertains to a process for the manufacture of a dense film, said process comprising, preferably consisting of the following steps: a) providing a solid composition [composition (C)] comprising, preferably consisting of: at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)], at least one poly(alkylene oxide) (PAO) of formula (I): HO—(CH | 12-03-2015 |
| 20220140443 | FRICTION ENHANCING CORE SURFACE OF BATTERY SEPARATOR ROLL AND RELATED METHODS - Rolls of battery separator material and related methods are disclosed. A roll of battery separator material includes a core including an outside surface, a separator material rolled around the core, and a friction enhancing surface on at least a portion of the outside surface of the core to prevent the separator material from lateral migration relative to the outside surface of the core. | 05-05-2022 |
| 429252000 | Silicon containing | 10 |
| 20090111026 | ORGANIC/INORGANIC COMPOSITE SEPARATOR HAVING POROUS ACTIVE COATING LAYER AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - An organic/inorganic composite separator includes (a) a polyolefin porous substrate having pores; and (b) a porous active layer containing a mixture of inorganic particles and a binder polymer, with which at least one surface of the polyolefin porous substrate is coated, wherein the porous active layer has a peeling force of 5 gf/cm or above, and a thermal shrinkage of the separator after being left alone at 150° C. for 1 hour is 50% or below in a machine direction (MD) or in a transverse direction (TD). This organic/inorganic composite separator solves the problem that inorganic particles in the porous active layer formed on the porous substrate are extracted during an assembly process of an electrochemical device, and also it may prevent an electric short circuit between cathode and anode even when the electrochemical device is overheated. | 04-30-2009 |
| 20120003546 | LITHIUM ION SECONDARY BATTERY - A lithium ion secondary battery is provided. The lithium ion secondary battery generally comprises an electrode assembly, a container for accommodating the electrode assembly; and an electrolyte. The electrode assembly comprises two electrodes having opposite polarities and a separator. The separator comprises a porous membrane comprising clusters of ceramic particles. The porous membrane is formed by bonding the particle clusters with a binder. Each particle cluster is formed either by sintering or by dissolving and re-crystallizing all or a portion of the ceramic particles. The ceramic particles comprise a ceramic material having a band gap. Each particle cluster may have the shape of a grape bunch or a lamina, and may be formed by laminating scale or flake shaped ceramic particles. | 01-05-2012 |
| 20120301792 | RECHARGEABLE LITHIUM BATTERY - Disclosed is a rechargeable lithium battery that includes a positive electrode including a lithium nickel-based positive active material; a negative electrode including a negative active material; an electrolyte including a lithium salt and a non-aqueous organic solvent; and a separator including a polymer substrate and a hydroxide compound-containing coating layer disposed on the polymer substrate. | 11-29-2012 |
| 20130065132 | POLYOLEFIN AND CERAMIC BATTERY SEPARATOR FOR NON-AQUEOUS BATTERY APPLICATIONS - A ceramic microporous polyolefin battery separator membrane, high in air permeability, low in shrinkage and improved temperature resistance addresses the safety requirements of lithium ion batteries. The separators made by the current invention consists of one or more polyolefin polymers and kaolin fillers comprised of aluminum oxide and silicon oxide. The membranes of current invention have a thickness of 5-200 microns, air permeability of 1-200 sec/10 cc (Gurley seconds), and average pore diameter of less than 1 micron. | 03-14-2013 |
| 20130078526 | SEPARATOR FOR ELECTROCHEMICAL DEVICE, METHOD FOR PRODUCING THE SAME, AND ELECTROCHEMICAL DEVICE - A production method for producing a separator for an electrochemical device including the steps of: applying, to a base material, a separator forming composition containing a monomer or an oligomer and a solvent; irradiating the thus formed coating with an energy ray to form a resin (A) having a cross-linked structure; and drying the coating after formation of the resin (A) to form pores, wherein, as a solvent of the separator forming composition, a solvent (a) having a solubility parameter (SP value) of 8.1 or more and less than 8.9 is used, or a solvent (b) having an SP value of 7 or more and 8 or less and a solvent (c) having an SP value of 8.9 or more and 9.9 or less are used in combination. A separator for an electrochemical device produced by the production method, and an electrochemical device of the invention including the separator. | 03-28-2013 |
| 20130115519 | SEPARATOR FOR LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME - Provided is a separator for a rechargeable lithium battery including a porous support including a polymer derived from polyamic acid or a polymer derived from polyimide, wherein the polyamic acid and the polyimide include a repeating unit prepared from aromatic diamine including at least one ortho-positioned functional group relative to an amine group and dianhydride. | 05-09-2013 |
| 20140255790 | POLYMERIC POROUS SUBSTRATES INCLUDING POROUS PARTICLES - A polymeric porous substrate is described. The substrate may be used as battery separator or in other industrial applications. The polymeric porous substrate is formed from a polymer such as a polyimide or polyetherimide that, in the absence of porous particles, forms a skin when cast into a substrate. The polymeric porous substrate also includes porous particles. | 09-11-2014 |
| 20150079479 | SEPARATOR FOR NONAQUEOUS CELL AND NONAQUEOUS CELL - Provided are a separator for a nonaqueous cell that has air permeability and is small in thickness while maintaining strength properties; and a nonaqueous cell having this separator. The separator includes a fiber sheet in which a polyvinyl alcohol fiber is incorporated in a proportion of 30% or more by mass (based on the fiber sheet). The fiber has a fiber breaking temperature in heated water of lower than 100° C. and higher than 85° C. | 03-19-2015 |
| 20160181584 | POLYOLEFIN MICROPOROUS MEMBRANE AND SEPARATOR FOR NONAQUEOUS ELECTROLYTE BATTERY | 06-23-2016 |
| 20160190532 | BATTERY SEPARATOR AND METHOD FOR MAKING THE SAME - A method for making a separator in a lithium ion battery which is less susceptible to high temperature shrinkage provides a polyolefin porous membrane. An oxidant is applied to surface of the polyolefin porous membrane. The polyolefin porous membrane and oxidant are heated in a liquid medium. The liquid medium includes a silicon-oxygen organic compound including a methacryloxy group and at least two alkoxy groups respectively joined to a silicon atom. The silicon-oxygen organic compound is polymerized and chemically grafted to the polyolefin porous membrane to form a grafted polyolefin porous membrane. A condensation reaction then occurs between silicon-oxygen groups in the grafted polyolefin porous membrane in an acidic environment or alkaline environment. | 06-30-2016 |
