Entries |
Document | Title | Date |
20080268345 | Battery Separator With Z-Direction Stability - A battery separator is a microporous membrane. The membrane has a major volume of a thermoplastic polymer and a minor volume of an inert particulate filler. The filler is dispersed throughout the polymer. The membrane exhibits a maximum Z-direction compression of 95% of the original membrane thickness. Alternatively, the battery separator is a microporous membrane having a TMA compression curve with a first substantially horizontal slope between ambient temperature and 125° C., a second substantially horizontal slope at greater than 225° C. The curve of the first slope has a lower % compression than the curve of the second slope. The curve of the second slope is not less than 5% compression. The TMA compression curve is graphed so that the Y-axis represents % compression from original thickness and the X-axis represents temperature. | 10-30-2008 |
20080274409 | Separator for Battery and Alkaline Battery - A separator for alkaline batteries which is obtained by bonding 5.0 to 45.0 g/m | 11-06-2008 |
20080280208 | ELECTROCHEMICAL DEVICE AND PRODUCTION METHOD THEREOF - An electrochemical device including a first anode, a first cathode, a single continuous separator provided between the first anode and the first cathode and folded so as to be arranged on the opposite side of the first anode to the first cathode and on the opposite side of the first cathode to the first anode, and an electrolyte in contact with the separator, the first anode and the first cathode, wherein the separator has a shape that surrounds the periphery of the first anode or the first cathode by being folded in the same direction at two folds consecutive from one end of the separator. | 11-13-2008 |
20080292968 | Organic/Inorganic Composite Separator Having Morphology Gradient, Manufacturing Method Thereof and Electrochemical Device Containing the Same - Disclosed is an organic/inorganic composite separator including: a porous substrate having pores; and a porous active layer containing a mixture of inorganic particles and a binder polymer with which at least one surface of the porous substrate is coated. The organic/inorganic composite separator of the present invention may be useful to enhance peeling and scratch resistances and improve a lamination characteristic by introducing a porous active layer onto a porous substrate having pores, the porous active layer having heterogeneity of morphology toward a thickness direction in which a content ratio of the binder polymer/inorganic particles present in a surface layer is higher than that of the binder polymer/inorganic particles present inside the surface layer. Accordingly, the stability and performances of a battery can be improved together since the detachment of inorganic particles from the porous active layer may be reduced during the assembly process of the electrochemical device. | 11-27-2008 |
20080299462 | LEAD-ACID BATTERY SEPARATOR HAVING ENHANCED STIFFNESS - A lead-acid battery separator comprised of a porous membrane substrate having a front surface and a back surface and said front surface having a plurality of ribs. To enhance the substrate's stiffness, one or more coatings of a stiffening material may be adhered to the ribs on the substrate's surface. | 12-04-2008 |
20090269671 | Fuel cell separator and method for manufacturing the same - The present invention provides a fuel cell separator formed of a continuous carbon-fiber composite, and a method for manufacturing the same. | 10-29-2009 |
20100015531 | ENHANCED NEGATIVE PLATES FOR LEAD ACID BATTERIES - A paste for negative plate of lead acid battery is disclosed that has a reduced paste density, yet provides a negative plate with substantially increased BET surface area and consequently the battery with enhanced performance. The disclosed paste comprises an activated carbon additive having a mesopore volume of greater than about 0.1 cm | 01-21-2010 |
20100021822 | MICROPOROUS POLYOLEFIN MEMBRANE - The present invention provides a microporous polyolefin membrane having a porosity of 45% to 85% wherein the microporous polyolefin membrane easily absorbs the strain produced when the membrane undergoes compression, and retains excellent permeability and excellent electrical insulation performance even after compression by setting the maximum pore diameter at 0.1 μm to 0.23 μm, the MD elastic modulus at 400 to 2,000 MPa, and the ratio MD elastic modulus/TD elastic modulus at 1.5 to 9. | 01-28-2010 |
20100104946 | Battery separator with improved oxidation stability - The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR | 04-29-2010 |
20100178567 | Mat Forming Spacers in Microporous Membrane Matrix - A microporous polymer used as a battery separator may be formed with hard, insoluble dielectric spacer materials in fibrous or particulate form. The spacer materials may form a barrier when the battery separator may melt or be crushed during an over-temperature event, possibly preventing a fire. The spacer materials may be located within the polymer matrix and may be added to a solution used to form the microporous polymer. | 07-15-2010 |
20100203395 | NON-WOVEN GAUNTLETS FOR BATTERIES - The present invention concerns non-woven, cartridge belt type gauntlet for lead acid batteries comprising two sheets of spunbond, needled and flat calendared thermobonded bicomponent PET-PBT nonwoven fabric assembled together at regular intervals. | 08-12-2010 |
20100203396 | MULTILAYER POROUS FILM - Provided is a multilayer porous film having a porous film comprised of a resin composition comprising a polypropylene and one or more polyolefins other than polypropylenes and an inorganic filler-containing porous layer stacked on at least on one side of the porous film. The multilayer porous film is capable of preventing short circuit between two electrodes even when a heat generation amount is large at the time of abnormal heat generation and therefore satisfying both excellent heat resistance and good shutdown function. | 08-12-2010 |
20100255382 | SECONDARY BATTERY WITH IMPROVED STORAGE CHARACTERISTICS AND METHOD FOR MANUFACTURING THE SAME - Provided is a secondary battery comprising a separator having an inorganic layer wherein active sites of inorganic particles in the inorganic layer are modified into non-reactive sites. Use of the separator leads to improvements in wettability of an electrolyte and thermoelectric stability and storage characteristics of the secondary battery. Provided is also a method of manufacturing the same secondary battery. | 10-07-2010 |
20100279173 | SEPARATOR WITH IMPROVED EASE OF HANDLING - Robust separator, which has on a substrate and in the intermediate spaces of the substrate, which comprises fibres of an electrically nonconducting material, an electrically nonconductive coating of oxide particles which are adhesively bonded to one another and to the substrate by an inorganic adhesive and comprise at least one oxide, selected from Al | 11-04-2010 |
20100285371 | Novel Separator And Electrochemical Device Comprising The Same - Disclosed is a separator comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule. Also, disclosed are an electrochemical device comprising the above separator and a method for identifying the origin or kind of the separator itself or the electrochemical device comprising the same by using the above separator. Further, disclosed is a method for manufacturing the aforementioned separator, the method comprising a step of forming a specific pattern by coating inorganic particles having a unique spectrum or color pattern on at least one area selected from the group consisting of a surface of a porous substrate and a porous part of the substrate. | 11-11-2010 |
20110027658 | METHOD FOR PREPARING CROSS-LINKED CERAMIC-COATED SEPARATOR CONTAINING IONIC POLYMER, CERAMIC-COATED SEPARATOR PREPARED BY THE METHOD, AND LITHIUM SECONDARY BATTERY USING THE SAME - The present invention provides method for preparing a cross-linked ceramic-coated separator containing an ionic polymer, a ceramic-coated separator prepared by the method, and a lithium secondary battery using the same. According to preferred methods for preparing a cross-linked ceramic-coated separator, a coating material containing ceramic particles for improving thermal and mechanical characteristics, a functional inorganic compound for improving cycle characteristics and high rate characteristics of a battery, and an ionic polymer for bonding the ceramic particles and the functional inorganic compound on a porous membrane substrate is coated on the porous membrane substrate and subjected to chemical cross-linking. | 02-03-2011 |
20110045356 | BATTERY - In a battery in which each of a positive electrode plate | 02-24-2011 |
20110129737 | COMPOSITE SEPARATOR FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same, in which a graphite foil prepared by compressing expanded graphite is stacked on a carbon fiber-reinforced composite prepreg or a mixed solution prepared by mixing graphite flake and powder with a resin solvent is applied to the cured composite prepreg such that a graphite layer is integrally molded on the outermost end of the separator. | 06-02-2011 |
20110159374 | 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 |
20110171535 | SEPARATOR FOR LITHIUM ION SECONDARY BATTERY, METHOD FOR MANUFACTURE THEREOF, AND LITHIUM ION SECONDARY BATTERY - Disclosed are a separator for lithium ion secondary batteries, having an inorganic layer formed from inorganic particles, characterized in that the inorganic particles have a particle diameter distribution in which the 50% cumulative particle diameter D | 07-14-2011 |
20110223486 | BIAXIALLY ORIENTED POROUS MEMBRANES, COMPOSITES, AND METHODS OF MANUFACTURE AND USE - At least a selected microporous membrane is made by a dry-stretch process and has substantially round shaped pores and a ratio of machine direction tensile strength to transverse direction tensile strength in the range of 0.5 to 6.0. The method of making the foregoing microporous membrane may include the steps of: extruding a polymer into a nonporous precursor, and biaxially stretching the nonporous precursor, the biaxial stretching including a machine direction stretching and a transverse direction stretching, the transverse direction including a simultaneous controlled machine direction relax. At least selected embodiments of the invention may be directed to biaxially oriented porous membranes, composites including biaxially oriented porous membranes, biaxially oriented microporous membranes, biaxially oriented macroporous membranes, battery separators, filtration media, humidity control media, flat sheet membranes, liquid retention media, and the like, related methods, methods of manufacture, methods of use, and the like. | 09-15-2011 |
20110256455 | Multifunctional Composite - A multi-functional, laminated composite comprises a plurality of cloth layers ( | 10-20-2011 |
20110318643 | ND/OR CLOSED BATTERY, AND AN OPEN AND/OR CLOSED BATTERY INCLUDING A PERMANENT PASTING MATERIAL - A permanent pasting sheet for an open and/or sealed battery, the material including glass microfibers that withstand acid electrolytes and a hydrophilic binder that withstands acid electrolytes, wherein the fiber material has a Cobb | 12-29-2011 |
20120021295 | Battery Separators with Bismuth Containing Glass Fibers - Disclosed are glass compositions, glass fiber compositions, glass fiber battery separators, glass fiber filter media, battery additives and active materials formed with glass compositions disclosed, glass fiber radiation shields, and glass fiber paper compositions. Certain embodiments include, among other components, bismuth oxide. Certain embodiments include about 0.5-30% bismuth oxide of the composition by weight and silica oxide at about 54-70% of the composition by weight. Embodiments may also include other components. For example, zinc oxide can make up about 0.01-3% of the composition by weight. | 01-26-2012 |
20120028126 | Batteries Containing Bismuth Glass Compositions - Disclosed are glass compositions, glass fiber compositions, glass fiber battery separators, glass fiber filter media, battery additives and active materials formed with glass compositions disclosed, glass fiber radiation shields, and glass fiber paper compositions. Certain embodiments include, among other components, bismuth oxide. Certain embodiments include about 0.5-30% bismuth oxide of the composition by weight and silica oxide at about 54-70% of the composition by weight. Embodiments may also include other components. For example, zinc oxide can make up about 0.01-3% of the composition by weight. | 02-02-2012 |
20120070747 | LEAD ACID BATTERY SEPARATORS, BATTERIES AND RELATED METHODS - In accordance with at least selected embodiments or aspects, the present invention is directed to improved, unique, and/or complex performance lead acid battery separators, such as improved flooded lead acid battery separators, batteries including such separators, methods of production, and/or methods of use. The preferred battery separator of the present invention addresses and optimizes multiple separator properties simultaneously. It is believed that the present invention is the first to recognize the need to address multiple separator properties simultaneously, the first to choose particular multiple separator property combinations, and the first to produce commercially viable multiple property battery separators, especially such a separator having negative cross ribs. | 03-22-2012 |
20120156569 | 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 modified solvent exchange process. The process may include forming a polymer-containing film having a non-uniform thickness, selectively densifiying the film so that it has a non-uniform polymer concentration, and inducing variable porosity in the film. | 06-21-2012 |
20120177996 | NONWOVEN ARTICLE WITH RIBBON FIBERS - Ribbon fibers, nonwoven articles derived therefrom, and their process of manufacture are provided. The ribbon fibers are derived from multicomponent fibers having a striped configuration and have a length of less than 25 millimeters, a minimum transverse dimension of less than 5 microns, and a transverse aspect ratio of at least 2:1. The ribbon fibers are formed from a water non-dispersible synthetic polymer. The nonwoven articles containing the ribbon fibers may be used for a wide array of products. | 07-12-2012 |
20120183861 | SULFOPOLYESTER BINDERS - A versatile binder comprising at least one or more sulfopolyesters is provided. These sulfopolyester binders can enhance the dry tensile strength, wet tensile strength, tear force, and burst strength of the nonwoven articles in which they are incorporated. Additionally, the water permeability of these binders can be modified as desired by blending different types of sulfopolyesters to produce the binder. Therefore, the binder can be used in a wide array of nonwoven end products and can be modified accordingly based on the desired properties sought in the nonwoven products. | 07-19-2012 |
20120219864 | POROUS FILM AND ELECTRIC STORAGE DEVICE - A porous film has an absorbing height of an electrolysis solution of 10 to 60 mm in at least one direction of the film's machine direction or transverse direction, wherein the absorbing height being measured after 30 minutes from the start of the absorption of the electrolysis solution, and a tensile strength at break in the machine direction of not less than 65 MPa. The porous film provides a porous film that has excellent absorption properties for an electrolysis solution and, when used as a separator, exhibits excellent battery properties and workability. | 08-30-2012 |
20120295165 | SINGLE-LAYER LITHIUM ION BATTERY SEPARATOR - The present invention relates to a microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. As a result, the inventive separator permits a high strength material with low porosity and low pore size to levels unattained. The combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing provides such benefits, 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. | 11-22-2012 |
20130017450 | SHEET-LIKE FIBER STRUCTURE, AND BATTERY, HEAT INSULATION MATERIAL, WATERPROOF SHEET, SCAFFOLD FOR CELL CULTURE, AND HOLDING MATERIAL EACH USING THE SHEET-LIKE FIBER STRUCTURE - A sheet-like fiber structure including a plurality of fibers made of amorphous silicon dioxide. The plurality of fibers are intertwined with each other and thus connected to each other, thereby forming void portions. Consequently, the sheet-like fiber structure has not only liquid permeability and voltage resistance but also high heat resistance and chemical resistance. The sheet-like fiber structure is therefore applicable to a separator for preventing a short circuit between electrodes, a scaffold for cell culture, to holding a biomolecule, or the like. | 01-17-2013 |
20130078525 | Single-Layer Lithium Ion Battery Separator - The present invention relates to a microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. As a result, the inventive separator permits a high strength material with low porosity and low pore size to levels unattained. The combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing provides such benefits, 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. | 03-28-2013 |
20130266874 | MELT-BLOWN NONWOVEN FABRIC, AND PRODUCTION PROCESS AND APPARATUS FOR THE SAME - It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 μm, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits | 10-10-2013 |
20140134496 | SINGLE-LAYER LITHIUM ION BATTERY SEPARATORS EXHIBITING HIGH LOW SHRINKAGE RATES AT HIGH TEMPERATURES - 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. | 05-15-2014 |
20140193716 | LASER-PERFORATED POROUS SOLID-STATE FILMS AND APPLICATIONS THEREOF - The disclosure relates, in one aspect, to porous solid-state films with controlled pore structures obtained by laser perforation. A thin laser-perforated film can comprise a slab defining a plurality of pores distributed in a predetermined arrangement, the plurality of pores having a distribution of sizes bound by a predetermined magnitude. In an aspect, the plurality of pores are formed in the slab with a laser having a wavelength less than about 400 nm and the slab has a transmission of the laser light of equal to or less than about 70% measured at a thickness of the slab of 100 micrometer or less. | 07-10-2014 |
20140272599 | Direct Electrolyte Gelling Via Battery Separator Composition and Structure - The capability of directly gelling an electrolyte within a lithium ion (or similar type) battery cell through the reaction of the electrolyte solution with a present battery separator is provided. Such a procedure results generally from the presence of suitable nanofibers within the battery separator structure that exhibit the potential for swelling in the presence of a suitable electrolyte formulation. In this manner, the capability of providing an entrenched gel within the battery separator for longer term viability and electrical generation is possible without externally gelling the electrolyte prior to battery cell introduction. The method of use of such a resultant battery, as well as the battery including such an automatic gelling battery separator/electrolyte combination, are also encompassed within this invention. | 09-18-2014 |
20140342237 | SEPARATOR FOR ELECTROCHEMICAL DEVICE AND MANUFACTURING METHOD THEREOF - Disclosed are a separator for an electrochemical device substantially comprising inorganic particles to provide an excellent mechanical strength, an electrochemical device comprising the same, and a method of manufacturing the separator using a high internal phase emulsion (RIPE). | 11-20-2014 |
20140356730 | PROPYLENE-BASED RESIN MICROPOROUS FILM, SEPARATOR FOR BATTERY, BATTERY, AND METHOD FOR PRODUCING PROPYLENE-BASED RESIN MICROPOROUS FILM - The present invention provides a propylene-based resin microporous film which has excellent lithium ion permeability, can constitute a high-performance lithium ion battery, and can prevent a short circuit between a positive electrode and a negative electrode due to dendrites. | 12-04-2014 |
20150295238 | CATHODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF PRODUCING CATHODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The cathode active material for a nonaqueous electrolyte secondary battery according to an aspect of the present disclosure mainly comprises a compound represented by a composition formula: Li | 10-15-2015 |
20150329692 | FUNCTIONALIZED POROUS MEMBRANES AND METHODS OF MANUFACTURE AND USE - A functionalized microporous, mesoporous, or nanoporous membrane, material, textile, composite, laminate, or the like, and/or a method of making or using such functionalized membranes. The functionalized porous membrane may be a functionalized microporous, mesoporous, or nanoporous membrane that has a functional molecule attached, such as a functional polymer, to the surface and/or internal fibrillar structure of the membrane. | 11-19-2015 |
20160149183 | Battery Separators with Controlled Pore Structure - Disclosed are battery separators comprising glass fibers and having a basis weight (gsm), a specific surface area (m | 05-26-2016 |
20160181666 | CONDUCTIVE AND LIQUID-RETAINING STRUCTURE | 06-23-2016 |