| Entries |
| Document | Title | Date |
|---|
| 20080305389 | Batteries with permanently wet-able fine fiber separators - Alkaline batteries are disclosed that advantageously include separators comprising at least one porous layer of fine fibers having a diameter of between about 50 nm and about 3000 nm that provide improved combinations of reduced thickness, dendritic barrier against short-circuiting and low ionic resistance as compared with known battery separators. The fine fibers show improved wet-ability in the alkaline electrolytes. | 12-11-2008 |
| 20090092893 | Microporous Polymer Membrane - The invention relates to a microporous membrane which comprises polyethylene, the microporous membrane having a differential pore volume curve with an area under the curve over the range of pore diameters of from about 100 nm to about 1,000 nm that is 25% or more of a total area under the curve over the range of pore diameters of from about 10 nm to about 1,000 nm. | 04-09-2009 |
| 20090098450 | MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, AND BATTERY SEPARATOR - (1) a combination of a microporous layer made of a polyethylene resin and a microporous layer made of polypropylene and a heat-resistant resin having a melting point or a glass transition temperature of 170° C. or higher, or (2) a combination of a microporous layer made of a polyethylene resin and a microporous layer made of polypropylene and inorganic filler having an aspect ratio of 2 or more provides a multi-layer, microporous polyolefin membrane with well-balanced permeability, mechanical strength, heat shrinkage resistance, shutdown properties and meltdown properties. | 04-16-2009 |
| 20090117453 | MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, AND BATTERY SEPARATOR AND BATTERY USING SAME - A multi-layer, microporous polyethylene membrane having at least three layers comprising (a) a first microporous layer amount of a polyethylene resin and constituting at least both surface layers, and (b) at least one second microporous layer made of a polyethylene resin, a heat-resistant resin having a melting point or glass transition temperature of 150° C. or higher and a filler, and sandwiched by both surface layers. | 05-07-2009 |
| 20090117454 | Multi-Layer Microporous Membrane, Battery Separator And Battery - The 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 is manufactured by layering, such as for example by coextrusion, one or more microporous membrane first layers and one or more microporous membrane second layers, such as on one or both sides of a first layer. The invention further relates to battery separators comprising the multi-layer microporous membrane and batteries utilizing the battery separators. | 05-07-2009 |
| 20090117455 | MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, ITS PRODUCTION METHOD, AND BATTERY SEPARATOR - A multi-layer, microporous polyethylene membrane having at least two layers, which comprises (a) a microporous polyethylene resin layer A comprising high-density polyethylene A having 0.2 or more terminal vinyl groups per 10,000 carbon atoms when measured by infrared spectroscopy, and (b) a microporous polyethylene resin layer B comprising high-density polyethylene B having less than 0.2 terminal vinyl groups per 10,000 carbon atoms when measured by infrared spectroscopy, has well-balanced permeability, mechanical strength, heat shrinkage resistance, shutdown properties, meltdown properties and oxidation resistance. | 05-07-2009 |
| 20090123827 | Multi-layer, microporous membrane, battery separator and battery - The invention relates to a multi-layer, microporous polyolefin membrane having appropriate permeability, pin puncture strength, shutdown temperature, shutdown speed, meltdown temperature, and thickness uniformity. The invention also relates to a battery separator formed by such multi-layer, microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the multi-layer, microporous polyolefin membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery. | 05-14-2009 |
| 20090123828 | Multi-Layer, Microporous Membrane, Battery Separator And Battery - The invention relates to a multi-layer, microporous membrane having appropriate permeability, pin puncture strength, shutdown temperature, shutdown speed, meltdown temperature, and thickness uniformity. The invention also relates to a battery separator formed by such multi-layer, microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the multi-layer, microporous polyolefin membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery. | 05-14-2009 |
| 20090130547 | Microporous polyethylene film with improved strength, permeability and surface energy - The present invention relates a microporous polyethylene film with improved mechanical strength, porosity, pore size and, particularly, improved surface energy, thereby having improved electrolyte wettability and being adequate for use as separators in high-capacity and long lifetime lithium secondary batteries. The microporous polyethylene film of the present invention is characterized by having a surface energy of at least 50 dynes/cm | 05-21-2009 |
| 20090142657 | Battery Separator - The present invention is directed to a sheet product useful as a battery separator. The sheet product is composed of a microporous polymeric sheet product having at least one ply, wherein at least one ply comprises a microporous sheet formed from a polymeric composition of a first polymer having low glass transition temperature and having a second ply coating a major portion of the pore and external surfaces of the first polymer microporous sheet. The first polymer is selected from a thermoplastic polymer that has a glass transition temperature of less than −50° C. and a melt temperature of at least 70° C. The second polymer coating a major portion of the microporous sheet of first polymer is selected from (a) a thermoplastic polymer having a glass transition temperature which is at least 60° C. above that of the first polymer or (b) a thermoset polymer having a degradation temperature that is at least 40° C. higher than the melt temperature of the first polymer The present battery separator exhibits a high degree of dimensional stability while causing shut-down of the battery's electrochemical reaction under elevated temperature conditions. | 06-04-2009 |
| 20090148761 | MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY - A multi-layer, microporous polyethylene membrane comprising (a) a first microporous layer made of a polyethylene resin, and (b) a second microporous layer comprising a polyethylene resin, and a heat-resistant polymer having a melting point or a glass transition temperature of 170° C. or higher, the heat-resistant polymer being dispersed in the form of fine particles in the polyethylene resin, and the second microporous layer having pores containing fine particles of the heat-resistant polymer as nuclei from which the cleavage of polyethylene resin fibrils starts, the multi-layer microporous polyethylene membrane having well-balanced shutdown properties, meltdown properties, permeability, mechanical strength, heat shrinkage resistance and compression resistance. | 06-11-2009 |
| 20090148762 | SEPARATOR FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A separator for use in a non-aqueous electrolyte secondary battery including a first porous layer (layer A) having a shutdown function which becomes substantially a non-porous layer at a high temperature, and a second porous layer (layer B) including an aramid resin and an inorganic material, wherein a ratio (T | 06-11-2009 |
| 20090181295 | METHOD FOR PRODUCING POROUS LAMINATE AND POROUS LAMINATE - A process for producing a porous laminate having many micropores interconnected in the thickness direction, which comprises: a step in which a laminate is produced which comprises at least three layers comprising an interlayer made of a thermoplastic resin having a hard segment and a soft segment and two nonporous outer layers made of a filler-containing resin and located as outer layers respectively on both sides of the interlayer; a step in which the laminate obtained is impregnated with a supercritical or subcritical fluid and this state is relieved to vaporize the fluid and thereby make the interlayer porous; and a step in which the two nonporous outer layers located respectively on both sides are made porous by stretching. | 07-16-2009 |
| 20090197159 | SEPARATOR AND BATTERY USING THE SAME - A separator having at least: a base material layer made of a microporous membrane of a polyolefin resin; and a functional resin layer which is made of a resin different from the polyolefin resin and has a porous interconnected structure in which many holes are mutually interconnected. A diameter of a narrowest portion of through-holes of said functional resin layer is larger than a diameter of a narrowest portion of through-holes of said base material layer. | 08-06-2009 |
| 20090246613 | ORGANIC/INORGANIC COMPOSITE SEPARATOR AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - An organic/inorganic composite 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 with a plurality of inorganic particles and a binder polymer. The binder polymer is a copolymer including: (a) a first monomer unit having a contact angle to a water drop in the range from 0° to 49°; and (b) a second monomer unit having a contact angle to a water drop in the range from 50° to 130°. This organic/inorganic composite separator has excellent thermal stability, so it may restrain an electric short circuit between a cathode and an anode. In addition, the separator may prevent inorganic particles in the porous coating layer from being extracted during an assembling process of an electrochemical device, thereby improving stability of an electrochemical device. | 10-01-2009 |
| 20090246614 | ELECTRODE ASSEMBLY AND SECONDARY BATTERY HAVING THE SAME - An electrode assembly of a secondary battery includes a positive electrode including a positive electrode active material layer, a negative electrode including a negative electrode active material layer, a separator separating the positive and negative electrodes from each other, and an electrolyte. The separator includes a porous layer comprising a ceramic material and a binder, and a polyolefin-based resin layer. The porous layer has a centerline average roughness (Ra) of 0.3 μm to 1.5 μm, the polyolefin-based resin layer has a porosity of 30% to 60%, and the polyolefin-based resin layer has a compressibility of 4% to 10%. | 10-01-2009 |
| 20090253032 | MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY - A multi-layer, microporous polyolefin membrane comprising first microporous layers constituting at least both surface layers and at least one second microporous layer disposed between both surface layers; said first microporous layer being made of a first polyolefin comprising (i) polypropylene, or (ii) a mixture of 50% or more by mass of polypropylene and a polyethylene resin; said second microporous layer being made of a second polyolefin comprising (i) a mixture of 7% or less by mass of ultra-high-molecular-weight polyethylene having weight-average molecular weight of 1×10 | 10-08-2009 |
| 20090269656 | MICROPOROUS POLYETHYLENE MEMBRANE, ITS PRODUCTION METHOD, AND BATTERY SEPARATOR - A microporous polyethylene membrane made of a polyethylene resin having a ratio (mass-average molecular weight/number-average molecular weight) of 5 to 300 and comprising 1% or more by mass of ultra-high-molecular-weight polyethylene having a mass-average molecular weight of 7×10 | 10-29-2009 |
| 20090286147 | Composite porous membrane, method of producing composite porous membrane, and battery separator, battery and capacitor using the same - The present invention provides a composite porous membrane suited for a separator for a battery having excellent ion permeability, low pore blocking temperature, and high membrane breakage temperature by compositing resin porous membranes having different melting points (or softening points) without using a termocompression bonding method or a method of directly applying a solution to the substrate by using a composite porous membrane containing a porous membrane A of a resin having a melting point of 150° C. or less and a porous membrane B of a resin having a glass transition temperature of more than 150° C. integrated with the porous membrane A, wherein both a superficial side of the porous membrane B and an interfacial side with the porous membrane A of the porous membrane B have a three-dimensional network structure. | 11-19-2009 |
| 20090291360 | SURFACE-TREATED MICROPOROUS MEMBRANE AND ELECTROCHEMICAL DEVICE PREPARED THEREBY - Disclosed is a porous film comprising: (a) a porous substrate having pores; and (b) a coating layer formed on at least one region selected from the group consisting of a surface of the substrate and a part of the pores present in the substrate, wherein the coating layer comprises styrene-butadiene rubber. An electrochemical device using the porous film as a separator is also disclosed. The porous film is coated with a styrene-butadiene polymer, whose rubbery characteristics can be controlled, and thus provides improved scratch resistance and adhesion to other substrates. When the porous film is used as a separator for an electrochemical device, it is possible to improve the safety of the electrochemical device and to prevent degradation in the quality of the electrochemical device. | 11-26-2009 |
| 20090311589 | Separator for Battery with Gel Polymer Layer - Disclosed are a separator for a battery, which comprises a gel polymer layer formed on a substrate, the gel polymer layer including a plurality of three-dimensional open pores interconnected with each other, and an electrochemical device comprising the same separator. Also, disclosed is a method for preparing the gel polymer layer including a plurality of three-dimensional open pores interconnected with each other on a substrate. | 12-17-2009 |
| 20100003591 | POLYOLEFIN COMPOSITION, ITS PRODUCTION METHOD, AND A BATTERY SEPARATOR MADE THEREFROM - The invention relates to a polyolefin composition. The polyolefin composition can be in the form of a multi-layer, microporous polyolefin membrane comprising a first microporous layer containing 7% or less by mass of ultra-high-molecular-weight polyethylene having a weight-average molecular weight of 1×10 | 01-07-2010 |
| 20100021808 | MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY - A multi-layer, microporous polyolefin membrane comprising first microporous layers constituting at least both surface layers, and at least one second microporous layer disposed between both surface layers, the first microporous layer comprising a first polyethylene resin containing 8% or more by mass of ultra-high-molecular-weight polyethylene having a weight-average molecular weight of 1×10 | 01-28-2010 |
| 20100055555 | INSULATING PLATE OF NONAQUEOUS ELECTROLYTE SECONDARY CELL, NONAQUEOUS ELECTROLYTE SECONDARY CELL, AND METHOD FOR PRODUCING INSULATING PLATE OF NONAQUEOUS ELECTROLYTE SECONDARY CELL - An insulating plate of a nonaqueous electrolyte secondary cell is interposed between a cell element and a cover member in a nonaqueous electrolyte secondary cell including the cell element formed by stacking cathodes and anodes through separators, a cell can including a can body which houses the cell element and the cover member which closes an opening of the can body to seal the cell element, and an electrolyte injected into the cell can. The insulating plate includes a plate-shaped insulating plate body having insulating property, an injection hole which passes through the insulating plate body in the thickness direction and through which the electrolyte can be injected, and a filter member permeable to only the electrolyte and provided on one of the surfaces of the insulating plate body so as to cover the injection hole. | 03-04-2010 |
| 20100143783 | NONAQUEOUS SECONDARY BATTERY SEPARATOR AND PROCESS FOR ITS FABRICATION - This invention provides a separator for a nonaqueous rechargeable battery comprising a composite porous membrane that has both a shutdown function and heat resistance good enough to be effective for the suppression of meltdown, desired in a high-performance nonaqueous rechargeable battery having increased energy density, increased output, and increased size, and can realize a separator for a nonaqueous rechargeable battery having excellent handling properties and ion permeability. The composite porous membrane comprises a polyolefin microporous membrane having an air permeability per thickness of not less than 15 sec/100 cc·μm and not more than 50 sec/100 cc·μm (JIS P 8117) and a membrane thickness of not less than 5 μm and not more than 25 μm and a porous layer formed of poly-m-phenylene isophthalamide covering and integrated with both sides of the polyolefin microporous membrane. The composite porous membrane is characterized in that the composite porous membrane has a thickness of not less than 6 μm and not more than 35 μm and an air permeability (JIS P 8117) of not less than 1.01 times and not more than 2.00 times that of the polyolefine microporous membrane, and the coverage of poly-m-phenylene isophthalamide is not less than 1.0 g/m | 06-10-2010 |
| 20100151310 | MICROPOROUS POLYETHYLENE MEMBRANE, ITS PRODUCTION METHOD AND BATTERY SEPARATOR - A microporous polyethylene membrane made of a polyethylene resin comprising 15% or less by mass of ultra-high-molecular-weight polyethylene having a mass-average molecular weight of 1×10 | 06-17-2010 |
| 20100151311 | LAMINATED POROUS FILM AND SEPARATOR FOR CELL - A laminated porous film having a shutdown (SD) property and a high breakdown (BD) property combined includes at least two layers, which are a porous membrane layer (A layer) having a thickness of 10 μm or greater other than non-woven fabric and a non-woven fabric layer (B layer) having a fiber diameter of 1 μm or less. A value of the ratio (AP | 06-17-2010 |
| 20100196750 | SEPARATOR AND BATTERY - A separator including a first layer having a first principal surface and a second principal surface and a second layer disposed on at least one of the first principal surface and the second principal surface, wherein the first layer is a microporous film containing a polymer resin, the second layer is a microporous film containing particles having an electrically insulating property and fibrils having an average diameter of 1 μm or less, and the fibrils have a three-dimensional network structure in which the fibrils are mutually linked. | 08-05-2010 |
| 20100255362 | SEPARATOR AND BATTERY - A battery in which a cathode and an anode are arranged so as to face each other an having a separator in between is provided. The separator is formed from a plurality of laminated microporous membranes and has a film thickness of 10x μm and a piercing strength of 150x gf or more, where 1≦x≦2. The air permeability of one layer among the plurality of microporous membranes is equal to or larger than 10% of the air permeability of the whole separator. | 10-07-2010 |
| 20100279167 | SEPARATOR FOR A BATTERY HAVING A ZINC ELECTRODE - The instant invention is a separator for a battery having a zinc electrode. The battery separator according to the instant invention includes a microporous membrane, and a coating on at least one surface of the microporous membrane. The coating includes a mixture of 25-40 weight % polymer and 60-75 weight % surfactant combination. The polymer is cellulose acetate, and the surfactant combination includes a first surfactant and a second surfactant. The first surfactant, preferably, has an active ingredient selected from the group consisting of organic ethers, and the second surfactant is, preferably, an oxirane polymer with 2-ethylhexyl dihydrogen phosphate. | 11-04-2010 |
| 20100297491 | Microporous Polymeric Membrane, Battery Separator, and Battery - The invention relates to microporous polymeric membrane having a good balance of rupture temperature and air permeability. The invention also relates to a battery separator formed by such a microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the microporous polymeric membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery. | 11-25-2010 |
| 20100316903 | SEPARATOR HAVING POROUS COATING LAYER, METHOD FOR MANUFACTURING THE SAME AND ELECTROCHEMICAL DEVICE HAVING 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 binder and a plurality of inorganic particles, wherein the binder includes a crosslinked binder. This separator may improve high temperature cycle performance, discharge characteristics and thermal resistance of an electrochemical device since the separator exhibits improved insolubility and impregnation to electrolyte and improved thermal resistance. | 12-16-2010 |
| 20110027642 | MICROPOROUS POLYOLEFIN COMPOSITE FILM WITH A THERMALLY STABLE POROUS LAYER AT HIGH TEMPERATURE - Provided is a microporous polyolefin composite film with a thermally stable porous layer at high temperature, particularly, to the microporous polyolefin composite film in which the thermally stable porous layer at high temperature, which contains organic or inorganic particles and heat-resistant polymer having aromatic ring in main chain and also having a melting temperature or a glass transition temperature of 170 to 500° C., is formed on one surface or both surfaces of a polyolefin microporous film by a phase separation, wherein the composite film with the porous layer has a permeability of 1.5×105 to 20.O×IO 5 Darcy, a meltdown temperature of 160 to 300° C., a MD/TD shrinkage of 1 to 40% at a temperature of 15O° C. for 60 minutes. | 02-03-2011 |
| 20110033743 | METHOD OF MANUFACTURING THE MICROPOROUS POLYOLEFIN COMPOSITE FILM WITH A THERMALLY STABLE LAYER AT HIGH TEMPERATURE - Provided is a method of manufacturing a microporous polyolefin composite film with a thermally stable porous layer at high temperature, particularly, to a method of manufacturing a microporous polyolefin composite film with a thermally stable porous layer at high temperature, comprising preparing a polyolefin microporous film using a composition containing a polyolefin resin; coating a solution, in which a high heat-resistant resin is dissolved in a solvent, on one surface or both surfaces of the polyolefin microporous film; phase-separating the polyolefin microporous film coated with the solution by contacting with a nonsolvent after the coating; and drying the polyolefin microporous film so as to remove the solvent and nonsolvent remained after the phase-separating, and thus forming the thermally stable layer at high temperature. | 02-10-2011 |
| 20110064989 | MEMBRANE FILE FOR BATTERIES, HAVING A SHUT-OFF FUNCTION - The invention relates to a biaxially oriented microporous film composed of at least two coextruded layers encompassing an external shut-off layer and another layer, wherein both layers contain a mixture of propylene homopolymer and propylene block copolymer and β-nucleation agent. The propylene block copolymer I of the other layer has a melting point exceeding 140° C. and the propylene block copolymer II of the external shut-off layer has a melting range starting at a temperature ranging from 50 to 120° C. The melting point of the propylene block copolymer I is greater than the melting point of the propylene block copolymer II. The film can be used as a separator in a primary or secondary battery. | 03-17-2011 |
| 20110064990 | MICRO-POROUS MULTI-LAYER MEMBRANE FILM BASED ON POLYPROPYLENE FOR BATTERIES WITH A CUT-OFF FUNCTION - The invention relates to a biaxially oriented microporous film composed of at least three coextruded layers encompassing an internal cut-off layer and two external layers, wherein all three layers contain a mixture of propylene homopolymer and propylene block copolymer and β-nucleation agent. The propylene block copolymer I of the external layers has a melting point exceeding 140° C. and the propylene block copolymer II of the internal layer has a melting range starting at a temperature ranging from 50 to 120° C. and the melting point of the propylene block copolymer I is greater than the melting point of the propylene block copolymer II. | 03-17-2011 |
| 20110117416 | BATTERIES WITH PERMANENTLY WET-ABLE FINE FIBER SEPARATORS - Alkaline batteries are disclosed that advantageously include separators comprising at least one porous layer of fine fibers having a diameter of between about 50 nm and about 3000 nm that provide improved combinations of reduced thickness, dendritic barrier against short-circuiting and low ionic resistance as compared with known battery separators. The fine fibers show improved wet-ability in the alkaline electrolytes. | 05-19-2011 |
| 20110123850 | Electrode Separator - A multi-functional battery separator comprises two or more active separator layers deposited from different polymer solutions to form a multilayered unitary structure comprising a free-standing film, a multiplex film on one side of a porous substrate, or separate films or multiplex films on opposite sides of a porous substrate. In a preferred embodiment, the cascade coating method is used to simultaneously deposit the active separator layers wet so that the physical, electrical and morphological changes associated with the polymer drying out process are avoided or minimized. The multi-functional separator is inexpensive to fabricate, exhibits enhanced ionic conductivity and ionic barrier properties, and eliminates gaps between individual layers in a separator stack that can contribute to battery failure. | 05-26-2011 |
| 20110135991 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND SEPARATOR - A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The separator includes a substrate layer and a surface layer formed on at least one principal plane of the substrate layer, the surface layer contains polyvinylidene fluoride and an inorganic material particle, and an amount of deformation against pressure of the surface layer is larger than that of the substrate layer. | 06-09-2011 |
| 20110143184 | BATTERY WITH ELECTROLYTE DIFFUSING SEPARATOR - A separator for use in a battery may include a primary separator layer, wherein the primary separator layer has a peripheral region and an interior region, and wherein the primary separator layer is configured to conduct electrolyte from the peripheral region to the interior region. The separator may also include a secondary separator layer in fluid communication with the primary separator layer, wherein the secondary separator layer includes a material that is less porous than the primary separator layer and wherein the secondary separator layer is configured to receive electrolyte at least from the interior region of the primary separator layer. | 06-16-2011 |
| 20110143185 | SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY - An object of the present invention is to provide a separator for a nonaqueous secondary battery having excellent heat resistance and excellent ion permeation as well as shut-down properties. The first invention is a separator for a nonaqueous secondary battery, comprising a porous composite membrane which includes a substrate comprising a polyolefin microporous membrane and a heat-resistant porous layer comprising a heat-resistant resin, the heat-resistant porous layer being formed on at least one surface of the substrate, wherein the separator is characterized in that the sheet resistance (A) of the substrate, the Gurley value (B) of the substrate, the sheet resistance (C) of the porous composite membrane, and the Gurley value (D) of the porous composite membrane satisfy a specific relationship. The second invention is characterized in that the heat-resistant porous layer has an average pore size of 0.1 to 0.2 μm as measured by mercury intrusion porosimetry. The third invention is characterized in that the heat-resistant resin fibrils have an average fibril diameter of 10 to 80 nm, and the pores in the heat-resistant porous layer have an average pore size of 50 to 250 nm. | 06-16-2011 |
| 20110165450 | SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, PROCESS FOR PRODUCING THE 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. | 07-07-2011 |
| 20110195295 | LAMINATED MICROPOROUS FILM AND METHOD FOR MANUFACTURING THE SAME, AND SEPARATOR FOR BATTERY - There is provided a laminated microporous film having an excellent balance between air permeability and film rupture temperature obtained by laminating a first microporous layer comprising a first resin composition and a second microporous layer comprising a second resin composition having a lower melting point than the first resin composition, wherein the first microporous layer has a melt viscosity η | 08-11-2011 |
| 20110206973 | MULTI-LAYER MICROPOROUS MEMBRANES AND METHODS FOR MAKING AND USING SUCH MEMBRANES - A layered microporous polymeric membrane includes a first blend region having a thickness T | 08-25-2011 |
| 20110212358 | LAMINATED POROUS FILM AND SEPARATOR FOR BATTERY - A laminated porous film having at least two porous layers layered one upon another. One porous layer consists of a resin layer containing a polypropylene resin. The other layer is a heat-resistant layer consisting of a resin composition whose crystal fusion peak temperature is higher than that of the resin composition of the layer containing the polypropylene resin. The laminated porous film has a β activity and/or a β crystal generation power. | 09-01-2011 |
| 20110217585 | INTEGRATED COMPOSITE SEPARATOR FOR LITHIUM-ION BATTERIES - Embodiments of the present invention relate generally to lithium-ion batteries, and more specifically, to batteries having integrated separators and methods of fabricating such batteries. In one embodiment, a lithium-ion battery having an electrode structure is provided. The lithium-ion battery comprises an anode stack, a cathode stack, and an integrated separator formed between the anode stack and the cathode stack. The anode stack comprises an anodic current collector and an anode structure formed over a first surface of the anodic current collector. The cathode stack comprises a cathodic current collector and a cathode structure formed over a first surface of the cathodic current collector. The integrated separator comprises a first ceramic layer, a second ceramic layer, and a polymer material layer deposited between the first ceramic layer and the second ceramic layer. | 09-08-2011 |
| 20110236745 | MICROPOROUS MEMBRANE, METHODS FOR MAKING SUCH FILM, AND THE USE OF SUCH FILM AS BATTERY SEPARATOR FILM - Embodiments of the present invention generally relate to microporous membrane, methods for making microporous membrane, and the use of microporous membrane as battery separator film. More particularly, the invention relates to a microporous polymeric membrane including a paraxylylene polymer or copolymer, particularly in combination with a polymeric microporous membrane. The paraxylylene polymer or copolymer can be formed on or laminated to the microporous polymeric membrane. | 09-29-2011 |
| 20110244306 | MULTI-LAYER MICROPOROUS FILM FOR BATTERIES HAVING SHUT-OFF FUNCTION - The invention relates to a biaxially oriented, multilayer microporous foil including one layer made from propylene homopolymer, a propylene block copolymer, a polyethylene and β-nucleating agent, and at least one further porous layer. | 10-06-2011 |
| 20110256443 | SEPARATOR INCLUDING POROUS COATING LAYER AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME - Disclosed is a separator. The separator includes a planar non-woven fabric substrate having a plurality of pores, and a porous coating layer formed on at least one surface of the non-woven fabric substrate. The porous coating layer is composed of a mixture of filler particles and a binder polymer. The filler particles include conductive positive temperature coefficient (PTC) particles composed of a mixture of conductive particles and a low melting point resin having a melting point lower than that of the non-woven fabric substrate. Due to the presence of the conductive PTC particles, the porous coating layer can be imparted with a shutdown function against thermal runaway. In addition, the porous coating layer exhibits appropriate electrical conductivity. Therefore, the separator is suitable for use in a high-capacity electrochemical device. | 10-20-2011 |
| 20110274961 | MICROPOROUS MEMBRANES AND METHODS FOR PRODUCING AND USING SUCH MEMBRANES - The invention relates to microporous polymeric membranes suitable for use as battery separator film. The invention also relates to a method for producing such a membrane, batteries containing such membranes as battery separators, methods for making such batteries, and methods for using such batteries. | 11-10-2011 |
| 20110287297 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A separator ( | 11-24-2011 |
| 20110293990 | RECHARGEABLE LITHIUM BATTERY - Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 μm and about 6 μm. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l. | 12-01-2011 |
| 20110293991 | RECHARGEABLE LITHIUM BATTERY - Disclosed is a rechargeable lithium battery that includes a positive electrode including a positive active material, a negative electrode including a silicon-based negative active material, an electrolyte including a lithium salt and a non-aqueous organic solvent, and a separator including a polymer substrate and a ceramic-containing coating layer on the polymer substrate. The ceramic-containing coating layer has a porosity at or between about 50% and about 90%, and a thickness at or between about 2 μm and about 6 μm. The rechargeable lithium battery has a capacity per volume of more than or equal to about 700 Wh/l. | 12-01-2011 |
| 20110305941 | Separator Having Porous Coating Layer, Manufacturing Method Of The Same, And Electrochemical Device Having The Same - A separator includes a planar non-woven fabric substrate having a plurality of pores, and a porous coating layer provided on at least one surface of the non-woven fabric substrate and made of a mixture of a plurality of inorganic particles and a binder polymer, wherein the non-woven fabric substrate is made of superfine fibers having an average thickness of 0.5 to 10 μm, and wherein, among the pores in the non-woven fabric substrate, pores having a wide diameter of 0.1 to 70 μm are 50% or above of the entire pores. The above separator having the porous coating layer may generate the generation of leak current without increasing a loading weight of the porous coating layer since the non-woven fabric substrate having a controlled pore side by using superfine fibers of a predetermined thickness is used. | 12-15-2011 |
| 20110311856 | POWER STORAGE DEVICE SEPARATOR - A power storage device separator includes a polyolefin based porous film laminated on at least one side with a particle-containing layer containing cellulose based resin, inorganic particles, and thermoplastic resin particles with a melting point of 100-140° C. | 12-22-2011 |
| 20120015232 | SEPARATOR AND NONAQUEOUS ELECTROLYTE BATTERY - A separator is provided and includes a functional resin layer containing a resin material and an inorganic oxide filler, having a porous interconnected structure in which many pores are mutually interconnected and having a contact angle against an electrolytic solution of not more than 11 degrees. | 01-19-2012 |
| 20120028102 | MICROPOROUS POLYMERIC MEMBRANES, BATTERY SEPARATORS, AND PRODUCTION METHODS THEREFOR - A multilayer microporous membrane including polymer and having a shutdown temperature of ≦130.5° C. and a storage stability of 0.3V or less. | 02-02-2012 |
| 20120028103 | ASYMMETRICAL SEPARATOR - A separator for a battery includes a base having an anode side configured to contact an anode of the battery and a cathode side configured to contact a cathode of the battery. The anode side has a different material consistency than the cathode side. | 02-02-2012 |
| 20120028104 | THERMOPLASTIC FILM, METHODS FOR MAKING SUCH FILM, AND THE USE OF SUCH FILM AS BATTERY SEPARATOR FILM - A thermoplastic film including a microporous polymeric membrane; and a non-woven web bonded to the polymeric microporous membrane, wherein the web comprises a plurality of fibers comprising polyolefin having a Tm≧85.0° C. and a Te-Tm≦10.0° C. | 02-02-2012 |
| 20120034509 | SEPARATOR HAVING POROUS COATING LAYER, AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - A separator includes a monolayer-type polyolefin-based micro-porous film having a porosity of 40 to 60%, an average pore diameter of 60 nm or less, and an air permeability of 350 s/100 mL or less; and a porous coating layer formed on at least one surface of the micro-porous film and made of a mixture of a plurality of inorganic particles and a binder polymer. An electrochemical device having the above separator has excellent thermal stability and allows a high power while minimizing the occurrence of leak current. | 02-09-2012 |
| 20120040232 | MICROPOROUS MEMBRANES AND METHODS FOR MAKING AND USING SUCH MEMBRANES - This invention relates to microporous membranes comprising polyolefin, the use of such membranes as battery separators, and methods for producing such microporous membranes. In particular, the invention relates to microporous membranes having a shutdown temperature in the range of 120.0° C. to 130.0° C. and a maximum solid state heat shrinkage ≦30.0%. | 02-16-2012 |
| 20120070714 | BATTERIES, SEPARATORS, COMPONENTS, AND COMPOSITIONS WITH HEAVY METAL REMOVAL CAPABILITY AND RELATED METHODS - In accordance with at least certain embodiments of the present invention, a novel concept of utilizing PIMS minerals as a filler component within a microporous lead-acid battery separator is provided. In accordance with more particular embodiments or examples, the PIMS mineral (preferably fish meal, a bio-mineral) is provided as at least a partial substitution for the silica filler component in a silica filled lead acid battery separator (preferably a polyethylene/silica separator formulation). In accordance with at least selected embodiments, the present invention is directed to new or improved batteries, separators, components, and/or compositions having heavy metal removal capabilities and/or methods of manufacture and/or methods of use thereof. | 03-22-2012 |
| 20120077072 | MULTI-LAYER MICROPOROUS FILM - Embodiments of the invention relate to microporous membranes that include first and second layers. The first layer includes ≦20.0 wt. % polymethylpentene and the second layer includes a compatibilizer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film. | 03-29-2012 |
| 20120077073 | MULTI-LAYER MICROPOROUS FILM - The invention relates to microporous membranes having at least two layers, a first layer comprising polymethylpentene and a second layer which comprises a polymer and has a composition that is not substantially the same as that of the first layer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film in, e.g., lithium ion batteries. | 03-29-2012 |
| 20120082884 | ELECTROSPINNING FOR INTEGRATED SEPARATOR FOR LITHIUM-ION BATTERIES - Embodiments of the present invention relate generally to lithium-ion batteries, and more specifically, to batteries having integrated separators and methods of fabricating such batteries. In one embodiment, a lithium-ion battery having an electrode structure is provided. The lithium-ion battery comprises an anode stack, a cathode stack, and a porous electrospun polymer separator comprising a nano-fiber backbone structure. The anode stack comprises an anodic current collector and an anode structure formed over a first surface of the anodic current collector. The cathode stack comprises a cathodic current collector and a cathode structure formed over a first surface of the cathodic current collector. The porous electrospun polymer separator is positioned between the anode structure and the cathode structure. | 04-05-2012 |
| 20120107667 | RECHARGEABLE LITHIUM BATTERY - A rechargeable lithium battery includes a positive electrode including a 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 interposed between the positive and negative electrodes and including a ceramic material having a first metal oxide-containing core and a second metal oxide shell disposed on the surface of the core. | 05-03-2012 |
| 20120115009 | SHRINK RESISTANT MICROPOROUS MEMBRANE AND BATTERY SEPARATOR - A shrink resistant microporous membrane includes a base material composed of a porous membrane, and a surface layer that is formed on at least one surface of the base material, and contains a heat resistant resin, a ceramic, and a clay mineral. | 05-10-2012 |
| 20120148900 | SEPARATOR AND METHOD OF MANUFACTURING THE SAME AND ORGANIC BATTERY EMPLOYING THE SAME - An exemplary separator of the present invention includes a first layer and a second layer. The first layer has a principal body made from high fibre material. The second layer is made from chlorophyll, and is deposed on the first layer. In one embodiment, the separator comprises a third layer, where the second layer is sandwiched between the first layer and the third layer. An organic battery using the separator and a method of manufacturing the separator are also provided in the present invention. | 06-14-2012 |
| 20120148901 | LAMINATED MICROPOROUS FILM, BATTERY SEPARATOR, AND NON-AQUEOUS ELECTROLYTE BATTERY - A laminated microporous film including a base which is formed from a non-woven fabric, and a surface layer which is formed on at least one of the surfaces of the base and includes a resin material and inorganic particles, wherein variation in thickness which is expressed using a standard deviation is equal to or less than 2.5%. | 06-14-2012 |
| 20120171548 | MICROPOROUS FOIL FOR BATTERIES HAVING SHUTDOWN FUNCTION - Single-layer or multilayer, biaxially oriented, microporous foil having a shutdown function, which comprises at least one shutdown layer I, which comprises propylene homopolymer and ss-nucleating agent and polyethylene. | 07-05-2012 |
| 20120177976 | HIGH MELT TEMPERATURE MICROPOROUS LITHIUM-ION RECHARGEABLE BATTERY SEPARATORS AND METHODS OF PREPARATION AND USE - Disclosed or provided are high melt temperature microporous Lithium-ion rechargeable battery separators, shutdown high melt temperature battery separators, battery separators, membranes, composites, and the like that preferably prevent contact between the anode and cathode when the battery is maintained at elevated temperatures for a period of time, methods of making, testing and/or using such separators, membranes, composites, and the like, and/or batteries, Lithium-ion rechargeable batteries, and the like including one or more such separators, membranes, composites, and the like. | 07-12-2012 |
| 20120202104 | SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - The present disclosure relates to a separator and a lithium secondary battery including the same. The separator comprises a polyethylene-based powder or a polypropylene-based powder provided on or in the base film, wherein the polyethylene-based powder or the polypropylene-based powder is different from the base film. | 08-09-2012 |
| 20120225344 | SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a separator for a lithium secondary battery and a lithium secondary battery comprising the same. The separator may include a thermoplastic polyolefin-based polymer porous sheet and an aramid-based non-woven fabric sheet stacked on at least one surface of the polyolefin-based polymer porous sheet, wherein the polyolefin-based polymer sheet and the aramid-based non-woven fabric sheet are adhered with an adhesive, and the adhesive loses an adhesive performance at 80° C. or more to separate the two sheets. The separator has a shut-down function and excellent high-temperature shape stability. | 09-06-2012 |
| 20120225345 | STACK-TYPE CELL OR BI-CELL, ELECTRODE ASSEMBLY FOR SECONDARY BATTERY USING THE SAME, AND MANUFACTURING METHOD THEREOF - Provided is a stack-type cell for a secondary battery including a stack of first electrode/separator/second electrode/separator/first electrode arranged in order, and an outer separator stacked on each of the first electrodes. Also, the present invention provides an electrode assembly for a secondary battery using the stack-type cell and a manufacturing method thereof. | 09-06-2012 |
| 20120282514 | MICROPOROUS MEMBRANES, METHODS FOR MAKING SAME AND THEIR USE AS BATTERY SEPARATOR FILMS - Disclosed herein are microporous polymeric membranes suitable for use as battery separator film. Also disclosed herein is a method for producing such a membrane, batteries containing such membranes as battery separators, methods for making such batteries, and methods for using such batteries. | 11-08-2012 |
| 20120295149 | RECHARGEABLE ALKALINE METAL AND ALKALINE EARTH ELECTRODES HAVING CONTROLLED DENDRITIC GROWTH AND METHODS FOR MAKING AND USING THE SAME - A device for extending the life of a battery, including an electrode having a metal portion, wherein the metal portion is selected from the group including lithium, calcium, magnesium, sodium, potassium and combinations thereof, an electrolyte permeable membrane, and a metal dendrite seeding material disposed between the electrode and the membrane. The electrode, the membrane and the metal dendrite seeding material are positioned in an electrolyte matrix. At least one dendrite extends from the electrode toward the electrolyte permeable membrane combines with at least one dendrite extending from the dendrite seeding material. | 11-22-2012 |
| 20130004827 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a nonaqueous electrolyte secondary battery. The stacked electrode assembly contains positive electrode plates in which no positive electrode active material layer is formed on at least one side of the positive electrode substrate and negative electrode plates in which no negative electrode active material layer is formed on at least one side of the negative electrode substrate. Such positive electrode surfaces where no positive electrode active material layer is formed are opposed, with a separator interposed, to such negative electrode surfaces where no negative electrode active material layer is formed. The separator interposed between the positive electrode active material layers and negative electrode active material layers has a layer containing ceramic. The separator interposed between the surfaces where no positive electrode active material layer is formed and the surfaces where no negative electrode active material layer is formed has no layer containing ceramic. | 01-03-2013 |
| 20130011716 | POLYOLEFIN MICROPOROUS MEMBRANE AND METHOD OF PRODUCING THE SAME, SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY AND NON-AQUEOUS SECONDARY BATTERY - The present invention provides a polyolefin microporous membrane in which a degree of crystallinity is from 60 to 85%, and a tie molecular volume fraction is from 0.7 to 1.7%. | 01-10-2013 |
| 20130017431 | LITHIUM BATTERY SEPARATOR WITH SHUTDOWN FUNCTION - This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator comprises a nonwoven nanoweb comprising a coating composed of a plurality of thermoplastic particles having particle size larger than the mean flow pore size of the nanoweb. The coating flows at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact. | 01-17-2013 |
| 20130017432 | NOVEL SEPARATORS FOR ELECTROCHEMICAL SYSTEMS - In an aspect, the invention provides separator systems for electrochemical systems providing electronic, mechanical and chemical properties useful for a range of electrochemical storage and conversion applications. Separator systems of some embodiments, for example, provide structural, physical and electrostatic attributes useful for managing and controlling dendrite formation in lithium and zinc based batteries. In an embodiment, for example, separator systems of the invention have a multilayer, porous geometry supporting excellent ion transport properties while at the same time providing a barrier effective to prevent dendrite initiated mechanical failure, shorting and/or thermal runaway. | 01-17-2013 |
| 20130022858 | LITHIUM BATTERY SEPARATOR WITH SHUTDOWN FUNCTION - This invention relates to separators for batteries and other electrochemical cells, especially lithium-ion batteries, having a shutdown mechanism. The separator is a laminate that contains a nonwoven nanoweb and a porous layer composed of a plurality of thermoplastic particles having particle size smaller than the mean flow pore size of the nanoweb. The shutdown layer melts and starts to flow at a desired temperature, and restricts the ion flow path, resulting in a substantial decrease in ionic conductivity of the separator at the desired shutdown temperature, while leaving the separator intact. | 01-24-2013 |
| 20130029202 | SEPARATOR FOR ELECTROCHEMICAL DEVICE, MANUFACTURING METHOD THEREOF, AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME - Provided is a separator for an electrochemical device including a plate-like porous substrate, and a porous thin-film coating layer formed on at least one surface of the plate-like porous substrate and containing crosslinked polyester. The crosslinked polyester coating layer hardly affects the air permeability of the separator. Also, the crosslinked polyester coating layer has good hydrophilicity and wettability to an electrolyte, and thus improves the performance of the battery. Also, the crosslinked polyester coating layer has excellent resistance to heat and deformation, and thus prevents the thermal shrinkage of the separator. | 01-31-2013 |
| 20130040185 | SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY, AND ELECTRODE STRUCTURE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME - A separator for a rechargeable lithium battery include a substrate including a plurality of first pores and a porous layer on the substrate, the porous layer including a plurality of second pores, the second pores having a larger average size than the first pores. A rechargeable lithium battery may include the separator. | 02-14-2013 |
| 20130045412 | MICROPOROUS MEMBRANES AND METHODS FOR PRODUCING AND USING SUCH MEMBRANES - The invention relates to microporous polymeric membranes suitable for use as battery separator film. The invention also relates to a method for producing such a membrane, batteries containing such membranes as battery separators, methods for making such batteries, and methods for using such batteries. | 02-21-2013 |
| 20130089770 | SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, AND NONAQUEOUS SECONDARY BATTERY - An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes, is capable of ensuring sufficient ion permeability even after attachment to electrodes, and further includes an adhesive porous layer having dynamic physical properties sufficient to withstand heat pressing and a uniform porous structure. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a porosity of 30 to 60% and an average pore size of 1 to 100 nm. | 04-11-2013 |
| 20130089771 | SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, AND NONAQUEOUS SECONDARY BATTERY - An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to an electrode. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer formed on at least one side of the porous substrate and containing a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the polyvinylidene-fluoride-based resin has a weight average molecular weight of 600,000 to 3,000,000. | 04-11-2013 |
| 20130089772 | SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, AND NONAQUEOUS SECONDARY BATTERY - An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to electrodes. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystal size of 1 to 13 nm. | 04-11-2013 |
| 20130095365 | SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, AND NONAQUEOUS SECONDARY BATTERY - An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to an electrode. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer formed on at least one side of the porous substrate and containing a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystallinity of 20 to 35%. | 04-18-2013 |
| 20130101889 | COMPOSITE POROUS MEMBRANE, METHOD FOR PRODUCING COMPOSITE POROUS MEMBRANE AND BATTERY SEPARATOR USING SAME - A composite porous membrane including a porous membrane A formed of a polyolefin-based resin; and a porous membrane B containing a heat-resistant resin and laminated on the porous membrane A, wherein the porous membrane A satisfies formulas (A) to (C), the composite porous membrane satisfies formula (D), and the composite porous membrane satisfies formulas (F) and (F) wherein thickness of porous membrane A<10 μm formula (A); 0.01 μm≦average pore diameter of porous membrane A≦1.0 μm formula (B); 30% porosity of porous membrane A≦70% formula (C); thickness of entire composite porous membrane≦13 μm formula (a); peel strength at interface between porous membrane A and porous membrane B≧1.0 N/25 mm formula (E); 20≦Y−X≦100 formula CO and wherein X is a gas permeation resistance (seconds/100 ccAir) of porous membrane A, and Y is a gas permeation resistance (seconds/100 ccAir) of the composite porous membrane. | 04-25-2013 |
| 20130130093 | ALKALINE 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. | 05-23-2013 |
| 20130143096 | ELECTRODE PROTECTION IN BOTH AQUEOUS AND NON-AQUEOUS ELECTROCHEMICAL CELLS, INCLUDING RECHARGEABLE LITHIUM BATTERIES - Electrode protection in electrochemical cells, and more specifically, electrode protection in both aqueous and non-aqueous electrochemical cells, including rechargeable lithium batteries, are presented. In one embodiment, an electrochemical cell includes an anode comprising lithium and a multi-layered structure positioned between the anode and an electrolyte of the cell. A multi-layered structure can include at least a first single-ion conductive material layer (e.g., a lithiated metal layer), and at least a first polymeric layer positioned between the anode and the single-ion conductive material. The invention also can provide an electrode stabilization layer positioned within the electrode, i.e., between one portion and another portion of an electrode, to control depletion and re-plating of electrode material upon charge and discharge of a battery. Advantageously, electrochemical cells comprising combinations of structures described herein are not only compatible with environments that are typically unsuitable for lithium, but the cells may be also capable of displaying long cycle life, high lithium cycling efficiency, and high energy density. | 06-06-2013 |
| 20130157109 | SEPARATOR - The present invention provides an inexpensive separator having excellent heat resistance and causing no contraction even in a high temperature circumstance nor short circuit while maintaining a high porosity. This separator is characterized in that the flat surfaces of scaly particles are oriented in the extending direction of the surface of the separator, the scaly particles being arranged in layers in the thickness direction of the separator, and fibrous materials are interposed among the scaly particles. | 06-20-2013 |
| 20130164597 | LITHIUM ION BATTERY SEPARATOR WITH SHUTDOWN PROPERTY - Provided is a microporous separator for a lithium secondary battery having shutdown properties wherein the separator comprises a propylene random copolymer which has a melt index of 0.5-10 g/10 minutes and comprises one or more species of comonomers in the content of 0.1-8 wt %. | 06-27-2013 |
| 20130164598 | MICROPOROUS FILM, PROCESS FOR PRODUCTION OF THE FILM, AND USE OF THE FILM - The invention relates to microporous polymeric membranes suitable for use as battery separator film. The membrane comprises polyethylene, polypropylene, and polymethylpentene. The invention also relates to a method for producing such a membrane, batteries containing such membranes as battery separators, methods for making such batteries, and methods for using such batteries. | 06-27-2013 |
| 20130171498 | SEPARATORS AND METHOD OF FABRICATING THE SAME - A method of fabricating a separator is provided. The method includes providing a porous non-woven substrate, and coating a first resin on the non-woven substrate, wherein the first resin includes hydrophilic oxyalkyl compounds, oxyalkyl polymers, oxyalkenyl alkyl polymers or derivatives thereof. The disclosure also provides a separator prepared by the method. | 07-04-2013 |
| 20130171499 | POROUS MEMBRANE AND METHOD FOR MANUFACTURING THE SAME - A porous membrane contains a polyethylene resin, in a core layer, pores of sizes that are relatively larger than those of pores in each of skin layers on the opposite sides are distributed, and the skin layers on the opposite sides have substantially same pore characteristics. A method for manufacturing a porous membrane includes the steps of: obtaining a mixture of a liquid-type paraffin oil and a solid-type paraffin wax; adding the mixture to a polyethylene resin to obtain a raw material resin mixture; extruding and cooling the raw material resin mixture; stretching the raw material resin mixture; and immersing the stretched raw material resin mixture in an organic solvent to extract a mixture of the oil and the wax. | 07-04-2013 |
| 20130171500 | SEPARATORS FOR ELECTROCHEMICAL CELLS - Provided are separators for use in batteries and capacitors comprising (a) at least 50% by weight of an aluminum oxide and (b) an organic polymer, wherein the aluminum oxide is surface modified by treatment with an organic acid to form a modified aluminum oxide, and wherein the treatment provides dispersibility of the aluminum oxide in aprotic solvents such as N-methyl pyrrolidone. Preferably, the organic acid is a sulfonic acid, such as p-toluenesulfonic acid. Also preferably, the organic polymer is a fluorinated polymer, such as polyvinylidene fluoride. Also provided are electrochemical cells and capacitors comprising such separators. | 07-04-2013 |
| 20130171501 | SEPARATOR, MANUFACTURING METHOD THEREOF, AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME - Provided is a separator including a plate-like porous substrate, and a porous thin-film coating layer formed on at least one surface of the plate-like porous substrate, and containing crosslinked polyester formed by polymerization of a multifunctional phenol compound having at least two phenol groups with a multifunctional acyl halide compound of an aromatic compound having at least two acyl halide groups. | 07-04-2013 |
| 20130183570 | 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. | 07-18-2013 |
| 20130209861 | LITHIUM SECONDARY BATTERY - Disclosed is an organic/inorganic composite porous film, having: (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. Further disclosed is a porous film having: (a) a porous substrate having pores; and (b) a coating layer formed on at least one region selected from the group consisting of a surface of the substrate and a part of the pores present in the substrate, wherein the coating layer comprises styrene-butadiene rubber. Also disclosed is an electrochemical device containing the organic/inorganic composite porous film, a method of manufacturing the film. | 08-15-2013 |
| 20130216893 | NONAQUEOUS ELECTROLYTE LITHIUM SECONDARY BATTERY - A nonaqueous electrolyte lithium secondary battery obtained by the present invention has a separator and a porous layer which contains an inorganic filler and a binder and which is formed on the separator, wherein a thickness of the separator ranges from 12 μm to 18 μm, a porosity of the separator ranges from 52% to 67%, a thickness of the porous layer ranges from 3 μm to 15 μm, a porosity of the porous layer ranges from 44% to 70%, and the porous layer-attached separator exhibits a film resistance equal to or lower than 1.35 Ω·cm | 08-22-2013 |
| 20130224558 | Microporous Composite Film with High Thermostable Organic/Inorganic Coating Layer - Disclosed is a microporous composite film having a coating layer formed on at least one surface of a microporous polyolefin film, wherein the coating layer simultaneously includes a high thermostable polymer resin and inorganic particles. More specifically, the present invention relates to a microporous composite film in which an area shrinkage at 170° C. for 1 hr is 10% or less; a tensile modulus in each of a machine direction and a transverse direction at 130° C. is 0.5 MPa to 7.0 MPa; a ratio between permeability of a microporous composite film (CCS | 08-29-2013 |
| 20130224559 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A separator for a nonaqueous electrolyte secondary battery that at least includes a resin (A) having a crosslinked structure, which is obtained by irradiating with an energy ray an oligomer polymerizable by irradiation with an energy ray. The separator has an average pore size of 0.005 to 0.5 μm, an air permeability of 50 sec/100 mL or more and less than 500 sec/100 mL, where the air permeability is expressed as a Gurley value, and a thermal shrinkage of less than 2% at 175° C. The separator for a nonaqueous secondary battery can be produced by the production method of the present invention, which includes the steps of: applying to a substrate a separator forming composition containing the oligomer, two or more kinds of solvents having different polarity from each other, and the like; irradiating the applied composition with an energy ray; and drying the energy ray-irradiated composition. | 08-29-2013 |
| 20130224560 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a separator for a non-aqueous electrolyte battery, the separator including a polyolefin microporous substrate in which a content of polyolefin having a molecular weight of 100,000 or less is from 10% by mass to 25% by mass relative to a total amount of polyolefin, and a heat resistant porous layer that is formed on one or both sides of the polyolefin microporous substrate and that includes a heat resistant polymer, wherein a maximum value of S, which is represented by the following formula (1), is 0.8 or more, and a temperature exhibiting the maximum value of S is from 130° C. to 155° C.: | 08-29-2013 |
| 20130236767 | CONNECTED POROUS SHEET AND METHOD FOR PRODUCING THE SAME, SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY, AND METHOD FOR PRODUCING THE SAME - An example of the present invention is provided with porous sheets | 09-12-2013 |
| 20130244082 | Separator, Manufacturing Method Of The Same, And Electrochemical Device Having The Same - The separator of the present invention comprises a porous composite having a porous substrate and a first porous coating layer formed on at least one surface of the porous substrate and comprising a mixture of inorganic particles and a first binder polymer; and a second porous coating layer formed on a first surface of the porous composite and comprising a mixture of cathode active material particles, a second binder polymer and a first conductive material, a third porous coating layer formed on a second surface of the porous composite and comprising a mixture of anode active material particles, a third binder polymer and a second conductive material, or both of the second porous coating layer and the third porous coating layer. Also, the separator of present invention may further comprise a fourth porous coating layer formed on at least one outermost surface thereof and comprising a fourth binder polymer. | 09-19-2013 |
| 20130252067 | METHOD OF PRODUCING POLYOLEFIN MICROPOROUS MEMBRANE AND SEPARATOR FOR LITHIUM ION BATTERY - A method is presented for producing polyolefin microporous membranes which are superior in thermal stability and are particularly useful as a separator for a lithium ion battery. A process including a first step of melting polyolefini resin and mixing together at least melted polyolefin resin, organosiloxane particles including a polysiloxane cross-linked structure and having a spherical or golfball shape with an average particle diameter of 0.01-10 μm and a plasticizer to obtain a melted mixture, a second step of molding this mixture and biaxially stretching molded product to obtain a stretched film and a third step of extracting and removing the plasticizer from the stretched film is carried out, if a membrane having a single film layer is to be produced, to obtain this single film layer and, if a membrane having two or more laminated film layer is to be produced, to obtain the film layers on both outsides. | 09-26-2013 |
| 20130260208 | SEPARATOR AND ELECTROCHEMICAL DEVICE HAVING THE SAME - The present invention provides a separator having a porous substrate; and a porous coating layer formed on one surface of the porous substrate and comprising a mixture of inorganic particles and a binder polymer, which has a value of a porosity×an air permeability per thickness in the range of 5 to 40, the porosity and the air permeability per thickness. The separator having a porous coating layer according to the present invention has a porosity which is controlled depending on the air permeability of the porous substrate, and thus exhibit superior ionic conductivity as well as good mechanical properties, thereby contributing to improve the performance and safety of an electrochemical device. | 10-03-2013 |
| 20130273409 | MAT MADE OF GLASS FIBERS OR POLYOLEFIN FIBERS USED AS A SEPARATOR IN A LEAD-ACID BATTERY - Embodiments of the invention provide methods and apparatuses for enhancing electron flow within a battery, such as a lead-acid battery. In one embodiment, a battery separator may include a conductive surface or layer upon which electrons may flow. The battery separator may include a fiber mat that includes a plurality of electrically insulative fibers. The battery separator may be positioned between electrodes of the battery to electrically insulate the electrodes. The battery separator may also include a conductive material disposed on at least one surface of the fiber mat. The conductive material may contact an electrode of the battery and may have an electrical conductivity that enables electron flow on the surface of the fiber mat. | 10-17-2013 |
| 20130288103 | COMPOSITE POROUS FILM AND METHOD FOR MANUFACTURING SAME - A composite porous membrane used as a separator for a battery includes a porous membrane A made of a polyolefin resin and a porous membrane B containing a heat-resistant resin laminated thereto, wherein the surface of the porous membrane B on the side that does not face the porous A has a three-dimensional network structure having nodes, and the peeling interface on the side of the porous membrane B formed when the porous membrane A and the porous membrane B are peeled off has a membrane morphology having pores with a pore size of 50 to 500 nm in an amount of at least 100 pores/10 μm | 10-31-2013 |
| 20130309548 | MICROPOROUS POLYMERIC MEMBRANE, BATTERY SEPARATOR, AND BATTERY - The invention relates to microporous polymeric membrane having a good balance of rupture temperature and air permeability. The invention also relates to a battery separator formed by such a microporous membrane, and a battery comprising such a separator. Another aspect of the invention relates to a method for making the microporous polymeric membrane, a method for making a battery using such a membrane as a separator, and a method for using such a battery. | 11-21-2013 |
| 20130309549 | MEMBRANES SUITABLE FOR USE AS SEPARATORS AND ELECTROCHEMICAL CELLS INCLUDING SUCH SEPARATORS - Disclosed are membranes suitable for use as separators in electrochemical cells as well as electrochemical cells, where the membranes are configured to substantially reduce the passage of multivalent ions therethrough without substantially reducing the permeability of the membranes to lithium ions. | 11-21-2013 |
| 20130323570 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - A nonaqueous electrolyte secondary battery has a positive electrode plate containing a positive electrode active material capable of reversibly absorbing and desorbing lithium; a negative electrode plate containing a negative electrode active material capable of reversibly absorbing and desorbing lithium; a separator separating the positive electrode plate and the negative electrode plate; and a nonaqueous electrolyte solution obtained by dissolving a solute in an organic solvent, said solute being composed of a lithium salt. In this battery, a polyolefin microporous membrane is used as the separator formed of a multilayer film having two or more layers and at least one of two surface layers of said polyolefin microporous membrane containing inorganic particles. Thus the nonaqueous electrolyte secondary battery exhibits good low-temperature characteristics, high-temperature storage characteristics and room-temperature cycle characteristics even in cases where hexamethylene diisocyanate is contained in the nonaqueous electrolyte solution. | 12-05-2013 |
| 20130330592 | COMPOSITE POROUS MEMBRANE AND METHOD OF PRODUCING THE SAME - A composite porous membrane is a composite porous membrane, wherein a porous membrane B including a heat-resistant resin is laminated on the surface of a polypropylene resin of an outermost layer of a porous membrane A composed of at least one layer, wherein at least one of the outermost layers comprises the polypropylene resin. The composite porous membrane satisfies a particular range of peeling strength at the interface between the porous membrane A and the porous membrane B and a particular range of difference between air resistance of the whole composite porous membrane and air resistance of the porous membrane A, provided that the porous membrane A satisfies a particular range of average pore size and porosity. | 12-12-2013 |
| 20130337312 | SEPARATOR FOR ELECTROCHEMICAL DEVICES AND METHOD OF MANUFACTURING THE SEPARATOR - There are provided a separator for electrochemical devices and a method of manufacturing the separator, and more particularly, a thin film separator for electrochemical devices which is improved in thermal stability and can be high-density charged for high capacity by employing a coating layer formed of an inorganic oxide thin film directly on a porous substrate and a method of manufacturing the separator using a film deposition method. | 12-19-2013 |
| 20130344375 | MULTILAYER MICROPOROUS FILM, PROCESS FOR PRODUCTION OF THE FILM, AND USE OF THE FILM - The invention generally relates to polymer film, and more particularly relates to polymeric membranes, methods for producing such membranes, and the use of such membranes as battery separator film. In an embodiment, the invention relates to liquid-permeable multi-layer microporous membranes comprising microlayers. According to the invention, liquid-permeable multi-layer microporous membranes having excellent physical properties including permeability can be produced without causing delaminate. | 12-26-2013 |
| 20140011068 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery comprising a positive electrode plate contains a positive electrode active material capable of absorbing and releasing lithium reversibly, a negative electrode plate containing a negative electrode active material capable of absorbing and releasing lithium reversibly, a separator keeping the positive electrode plate and the negative electrode plate isolated, and a non-aqueous electrolytic solution containing a non-aqueous solvent and an electrolyte salt, wherein the positive electrode plate has a surface on which an inorganic particle layer containing inorganic particles and a binder is formed, and the separator is a polyolefin microporous film including a laminate film having at least two layers and containing inorganic particles in at least a negative-electrode-side surface layer thereof. This configuration can improve storage properties and reduce swelling under high-temperature environment. | 01-09-2014 |
| 20140017549 | ENERGY STORAGE DEVICE - An energy storage device including a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, wherein the negative electrode includes non-graphitizable carbon as a negative electrode active material, and the separator has a thickness of 10 to 30 μm and an air permeability of 10 to 180 sec/100 cc. | 01-16-2014 |
| 20140038026 | Energy store with separator - An electrochemical energy store including a cathode space, an anode space, at least one electrolyte solution, the electrolyte solution being in the cathode space and in the anode space, and at least one separator, to separate the cathode space from the anode space. The separator includes a diaphragm, and the diaphragm has a permeability to molecules smaller than or equal to 250 Dalton, the diaphragm having a valence-dependent permeability to the molecules. In addition, also described is a separator for the electrochemical energy store, a method for manufacturing a diaphragm for the separator, and the use of the electrochemical energy store in an electrical device. The long-term stability of the electrochemical energy store may be increased by the present system. | 02-06-2014 |
| 20140045033 | SEPARATOR MEMBRANES FOR LITHIUM ION BATTERIES AND RELATED METHODS - A battery separator for a secondary lithium battery includes a microporous/porous membrane with a ceramic coating of one or more layers, a layer may include one or more particles and/or binders. | 02-13-2014 |
| 20140113175 | HIGH CAPACITY LITHIUM ION BATTERY CONTAINING METALLIC CONDUCTING MATERIALS - A lithium ion battery containing conducting materials comprises a positive electrode, a negative electrode, a separator, an electrolyte, adhesives and sealing materials. The conducting materials in the positive electrode comprise metal carbides, metal borides or metal nitrides. The conducting materials in the negative electrode comprise metal carbides, metal borides or metal nitrides. The metal carbide is titanium carbonitride, tungsten carbide or titanium carbide, vanadium carbide, tantalum carbide, and eutectic of tungsten carbide and titanium carbide. The metal boride is molybdenum boride, tungsten boride or vanadium boride. The metal nitride is titanium nitride, tungsten nitride or tantalum nitride. The conducting materials in the positive electrode may also comprise powdered metals. The conducting materials in the negative electrode comprise powdered metals. The powdered metal is nickel powder, copper powder or chromium powder. | 04-24-2014 |
| 20140113176 | SEPARATOR HAVING HEAT RESISTANT INSULATION LAYERS - A separator ( | 04-24-2014 |
| 20140120403 | BATTERY SEPARATOR AND METHOD FOR PREPARING THE SAME - A battery separator and a method for preparing the same are provided. The battery separator comprises: a substrate which is a polyvinylidene fluoride non-woven fabric; and a coating layer formed on each surface of the substrate, in which the material of the coating layer comprises an ultra-high molecular weight polyethylene and a linear low density polyethylene. | 05-01-2014 |
| 20140134472 | STACK-TYPE CELL OR BI-CELL, ELECTRODE ASSEMBLY FOR SECONDARY BATTERY USING THE SAME, AND MANUFACTURING METHOD THEREOF - Provided is a stack-type cell for a secondary battery including a stack of first electrode/separator/second electrode/separator/first electrode arranged in order, and an outer separator stacked on each of the first electrodes. Also, the present invention provides an electrode assembly for a secondary battery using the stack-type cell and a manufacturing method thereof. | 05-15-2014 |
| 20140162110 | SINGLE FIBER LAYER STRUCTURE OF MICRON OR NANO FIBERS AND MULTI-LAYER STRUCTURE OF MICRON AND NANO FIBERS APPLIED IN SEPARATOR FOR BATTERY - A single fiber layer structure of micron or nano fibers, and a multi-layer structure of micron and nano fibers are provided. The single fiber layer structure of micron fibers comprises a web of micron fibers and an impregnating resin, and has a pore size of 1 nm-500 nm. The web of micron fibers is formed by plural interweaved micron fibers (D≧1 μm). The single fiber layer structure of nano fibers comprises a web of nano fibers formed by plural interweaved nano fibers (D<1 μm). The multi-layer structure of micron and nano fibers comprises a web of interweaved micron fibers, a web of nano fibers formed by plural nano fibers interweaved on the web of micron fibers, a mixture layer formed by parts of the interweaved nano and micron fibers, and a resin at least impregnating the mixture layer and parts of the micron fibers of the web of micron fibers. | 06-12-2014 |
| 20140186682 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery of the present invention includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. An insulating layer is provided between the positive electrode and the negative electrode. The insulating layer contains at least one type of hydrogen carbonate selected from a sodium hydrogen carbonate and a potassium hydrogen carbonate. The hydrogen carbonate has an average particle size of 2 to 20 μm. A content of the hydrogen carbonate is 5 to 80 vol % of the total volume of the insulating layer. The insulating layer has a thickness of 4 to 40 μm. | 07-03-2014 |
| 20140205884 | GALVANIC ELEMENT WITH ENHANCED SAFETY PROPERTIES - A galvanic element includes at least one lithium-intercalating and at least one lithium-deintercalating electrode. A positive electrode and a negative electrode are separated by a polyimide-based separator that has a labyrinth porosity. The polyimide-based separator is configured at least on one side with a porous, ceramically-based coating that comprises a binder and ceramic particles. | 07-24-2014 |
| 20140212729 | ELECTRODE ASSEMBLY AND ELECTROCHEMICAL CELL CONTAINING THE SAME - An electrode assembly manufactured by a third method other than a stack folding method or a stack method, and an electrochemical device including thereof are disclosed. The electrode assembly includes at least one radical cell. The radical cell has a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one. | 07-31-2014 |
| 20140242444 | SEPARATOR FOR A NON-AQUEOUS SECONDARY BATTERY AND NON-AQUEOUS SECONDARY BATTERY - A separator for a non-aqueous secondary battery including a porous substrate, and an adhesive porous layer that is formed on one side or both sides of the porous substrate and contains the following polyvinylidene fluoride resin A and the following polyvinylidene fluoride resin B: | 08-28-2014 |
| 20140248526 | GALVANIC ELEMENT WITH ENHANCED SAFETY PROPERTIES - A separator is configured to be used with a galvanic element which includes at least one positive electrode, to be separated from the separator, and at least one negative electrode. The separator includes a first microporous membrane, made of a nonpolyolefin-based polymer, and at least one second microporous membrane made of a polyolefin polymer. A melting or softening temperature of the first microporous membrane is higher than a melting or softening temperature of the at least one second membrane. | 09-04-2014 |
| 20140255752 | LAMINATED OXIDATION PROTECTED SEPARATOR - A battery separator for a lead acid battery addresses the issues of acid stratification and separator oxidation arising from contaminants. The separator includes a microporous membrane and a diffusive mat affixed thereto. The diffusive mat has a three hour wick of: at least about 2.5 cm. The diffusive mat may be made of synthetic fibers, glass fibers, natural fibers, and combinations thereof. The diffusive mat may include silica. The separator may include a rubber. | 09-11-2014 |
| 20140255753 | POLYOLEFIN MICROPOROUS MEMBRANE - Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 μm but not more than 5 μm and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 μm. | 09-11-2014 |
| 20140255754 | SEPARATOR FOR A NON-AQUEOUS SECONDARY BATTERY AND NON-AQUEOUS SECONDARY BATTERY - The present invention provides a separator for a non-aqueous secondary battery including a porous substrate, and an adhesive porous layer that is formed at one or both sides of the porous substrate, contains (1) polyvinylidene fluoride resin A and (2) polyvinylidene fluoride resin B described below, and has a porosity of from 30% to 60% and an average pore size of from 20 nm to 100 nm:
| 09-11-2014 |
| 20140272535 | THREE-REGION BATTERY SEPARATOR - Disclosed is a battery separator, comprising a coarse fiber region comprising fibers, such as glass fibers, having an average diameter of greater than or equal to 2 μm; a first fine fiber region comprising glass fibers having an average diameter of less than or equal to 2 μm, and a second fine fiber region comprising glass fibers having an average diameter of less than or equal to 2 μm, wherein the coarse fiber region is disposed between the first fine fiber region and the second fine fiber region, and wherein the thickness of the coarse fiber region constitutes 1-49% of the sum of the thicknesses of the coarse fiber region, the first fine fiber region and the second fine fiber region. Such a separator is useful, e.g., in a lead-acid battery, where during filling of the battery with acid, the separator enhances the diffusion of acid toward the interior region. | 09-18-2014 |
| 20140287296 | SEPARATOR AND ELECTROCHEMICAL DEVICE HAVING THE SAME - The present invention refers to a separator and an electrochemical device having the same. The separator of the present invention comprises a non-woven fabric substrate obtained from fibers and having multiple pores formed between the fibers; and a polymer coating layer formed on a part or the whole of the surface of the fibers, wherein the polymer coating layer comprises a polymer having a tensile strength of 80 MPa or more, a tensile modulus of 3,000 MPa or more and a flexural modulus of 3,000 MPa or more. | 09-25-2014 |
| 20140302374 | BIAXIALLY ORIENTED MICROPOROUS MEMBRANE - A 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 5.0. The method of making the foregoing microporous membrane includes 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 stretching including a simultaneous controlled machine direction relax. | 10-09-2014 |
| 20140308567 | NON-AQUEOUS SECONDARY BATTERY SEPARATOR AND NON-AQUEOUS SECONDARY BATTERY - The present invention provides a separator for a non-aqueous secondary battery including a porous substrate and an adhesive porous layer that is formed at at least one side of the porous substrate and contains the following polyvinylidene fluoride-based resin A and the following polyvinylidene fluoride-based resin B. (1) Polyvinylidene fluoride resin A selected from the group consisting of vinylidene fluoride homopolymers having a weight average molecular weight of from 600,000 to 2,500,000, and vinylidene fluoride copolymers having a weight average molecular weight of from 600,000 to 2,500,000 and containing a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene, the total content of structural units derived from hexafluoropropylene in each of the vinylidene fluoride copolymers being 1.5 mol % or less of the total content of structural units in each of the vinylidene fluoride copolymer. (2) Polyvinylidene fluoride resin B containing a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene, the total content of structural units derived from hexafluoropropylene in the polyvinylidene fluoride resin B being greater than 1.5 mol % of the total content of structural units in the polyvinylidene fluoride resin B. | 10-16-2014 |
| 20140315065 | BATTERY SEPARATOR - A battery separator includes a microporous polyolefin membrane and a modifying porous layer laminated on at least one surface of the microporous polyolefin membrane, wherein the microporous polyolefin membrane comprises a polyethylene resin, and the modifying porous layer is laminated on at least one surface of the microporous polyolefin membrane having (a) a shutdown temperature of 135° C. or lower, (b) a rate of air resistance change of 1×10 | 10-23-2014 |
| 20140315066 | ELECTROLYTE BATTERIES - The invention relates to an electrolyte battery electrode component having a layer having a surface adjoined by electrolyte in the battery and provided with a fluid-conducting channel structure. In this context, it is envisaged that through the fluid-conducting structure has channels having channel depths in the range from 10 to 200 μm and/or at least 50% of the thickness of the active layer. | 10-23-2014 |
| 20140315067 | METHODS OF MAKING MICROPOROUS POLYMERIC MEMBRANES AND THE USE OF SUCH MEMBRANES AS BATTERY SEPARATOR FILM - A method of producing a microporous membrane includes combining at least a first polyethylene and a first diluent; combining at least a second polyethylene and a second diluent; combining at least a third polyethylene and a third diluent; forming from the combined polyethylenes and diluents a multi-layer extrudate having a first layer containing the first polyethylene, a second layer containing the second polyethylene, and a third layer located between the first and second layers containing the third polyethylene, wherein the extrudate contains polyethylene having a terminal unsaturation ≧0.20 per 10,000 carbon atoms in an amount of 4.0 wt. % to 35.0 wt. %; and removing at least a portion of the first, second, and third diluents from the multi-layer extrudate to produce the membrane. | 10-23-2014 |
| 20140315068 | NON-AQUEOUS SECONDARY BATTERY SEPARATOR AND NON-AQUEOUS SECONDARY BATTERY - The present invention provides a separator for a non-aqueous secondary battery, including a porous substrate and an adhesive porous layer that is formed at at least one side of the porous substrate and contains the following polyvinylidene fluoride-based resin A and the following polyvinylidene fluoride-based resin B. (1) Polyvinylidene fluoride resin A selected from the group consisting of vinylidene fluoride homopolymers, and vinylidene fluoride copolymers containing a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene, the total content of structural units derived from hexafluoropropylene in each of the vinylidene fluoride copolymers being 1.5 mol % or less of the total content of structural units in each of the vinylidene fluoride copolymer. (2) Polyvinylidene fluoride resin B selected from the group consisting of vinylidene fluoride copolymers having a weight average molecular weight of from 300,000 to 2,500,000 and containing a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene, the total content of structural units derived from hexafluoropropylene in each of the vinylidene fluoride copolymer being greater than 1.5 mol % of the total content of structural units in each of the vinylidene fluoride copolymer. | 10-23-2014 |
| 20140322587 | SEPARATOR OF LITHIUM-ION-BATTERY PREPARATION AND METHOD THEREOF - The present disclosure relates to a separator of a lithium-ion battery and a preparation method thereof, the separator comprises a substrate membrane and a coating provided on a surface of the substrate membrane, the coating comprises ceramic particles, an adhesive and a solid polymer wax which has a melting point of 85˜120° C., a molecular weight of 1,000˜25,000 and a particle size of 0.5˜10 μm. When the lithium-ion battery is heated due to overcharge and the like to make the interior temperature reach the melting point of the solid polymer wax, the solid polymer wax can be melt and enter among the ceramic particles and into the micropores of the substrate membrane by capillarity so as to function as electrical disconnection, which can effectively cut off the channel of the lithium ions and stop the overcharge, and ensure the safety performance of the lithium-ion battery under the situation of overcharge. | 10-30-2014 |
| 20140329131 | HEAT RESISTING SEPARATOR HAVING ULTRAFINE FIBROUS LAYER AND SECONDARY BATTERY HAVING THE SAME - A polyolefin separator having an heat-resistant ultrafine fibrous layer and a secondary battery using the same, in which the separator has a shutdown function, low thermal contraction characteristics, thermal endurance, excellent ionic conductivity, excellent cycling characteristics at the time of battery construction, and excellent adhesion with an electrode. The present invention adopts a very simple and easy process to form an ultrafine fibrous layer through an electrospinning process, and at the same time, to remove solvent and to form pores. Accordingly, the separator of the present invention is useful particularly for electrochemical devices used in a hybrid electric automobile, an electric automobile, and a fuel cell automobile, requiring high thermal endurance and thermal stability. | 11-06-2014 |
| 20140335396 | Microporous Membrane - A microporous membrane having a polyolefin microporous membrane and a surfactant adhering to the polyolefin microporous membrane, wherein the surfactant includes a surfactant (A) having a solubility in 100 g of water of 5 g or more and a surfactant (B) having a solubility in 100 g of water of less than 0.1 g, the surfactants (A) and (B) are adhered in an amount of 1 to 40% by mass in total based on 100% by mass of the polyolefin microporous membrane, and the polyolefin microporous membrane has a tortuosity factor of more than 2.0. | 11-13-2014 |
| 20140342215 | ELECTRODE ASSEMBLY OF NOVEL STRUCTURE AND BATTERY CELL COMPRISING THE SAME - Disclosed herein is an electrode assembly configured to have a structure in which one bi-cell and at least one monocell are folded in a state in which the bi-cell and the monocell are arranged on a continuous separation film. | 11-20-2014 |
| 20140349169 | BATTERY SEPARATOR, AND BATTERY SEPARATOR MANUFACTURING METHOD - A battery separator includes a porous membrane A with a thickness of less than 10 μm including a polypropylene resin, and a porous membrane B laminated thereon including a heat resistant resin and inorganic particles or cross-linked polymer particles, wherein the porous membrane A satisfies a specific range of thickness, average pore size, and porosity, and the entire battery separator satisfies a specific range of thickness, peeling strength at the interface between the porous membrane A and the porous membrane B, and difference in air resistance between the entire battery separator and the porous membrane A. | 11-27-2014 |
| 20140356688 | SEPARATOR OF LITHIUM BATTERY AND MANUFACTURING METHOD THEREOF - The present disclosure provides a separator for lithium battery, particularly to a separator including a middle layer formed by a punch method. Also, a manufacturing method of the separator is provided. The separator formed by the punch method has a better heat-resistant property in an elevated temperature and features a high mechanical strength. | 12-04-2014 |
| 20140363726 | SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS SECONDARY BATTERY - The present invention provides a separator for a non-aqueous secondary battery including a porous substrate and an adhesive layer that is formed on at least one side of the porous substrate and is an aggregate layer of particles that contain a polyvinylidene fluoride resin and have an average particle diameter of from 0.01 μm to 1 μm, in which a content of the particles per one adhesive layer is from 0.1 g/m | 12-11-2014 |
| 20150017511 | HIGHLY POROUS SEPARATOR FILM HAVING A COATING AND A DISCONNECTING FUNCTION - The invention concerns a biaxially orientated, single- or multi-layered porous film which comprises at least one porous layer and this layer contains at least one propylene polymer and polyethylene;
| 01-15-2015 |
| 20150017512 | SEPARATOR COMPRISING AN ORGANIC-INORGANIC ADHESION PROMOTER - The invention relates to a process for producing a separator comprising the steps of: providing a sheetlike porous substrate, a solvent, ceramic particles and an adhesion promoter; preparing a slip by mixing the solvent, the adhesion promoter and the ceramic particles; coating the substrate with the slip and thermally drying the coated substrate to obtain the separator. The problem addressed is that of specifying a process useful for producing separators having a higher ceramic content. The problem is solved when the solvent used is a mixture of water and at least one organic component; the adhesion promoter used is a mixture of silanes and at least one thermally crosslinkable acrylic polymer; the slip is admixed with a carboxylic acid preparation and also with a defoamer component free from silicone oil. | 01-15-2015 |
| 20150024251 | PROTECTED ACTIVE METAL ELECTRODE AND BATTERY CELL STRUCTURES WITH NON-AQUEOUS INTERLAYER ARCHITECTURE - Active metal and active metal intercalation electrode structures and battery cells having ionically conductive protective architecture including an active metal (e.g., lithium) conductive impervious layer separated from the electrode (anode) by a porous separator impregnated with a non-aqueous electrolyte (anolyte). This protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the impervious layer, which may include aqueous or non-aqueous liquid electrolytes (catholytes) and/or a variety of electrochemically active materials, including liquid, solid and gaseous oxidizers. Safety additives and designs that facilitate manufacture are also provided. | 01-22-2015 |
| 20150030907 | POLYETHYLENE MICROPOROUS MEMBRANE AND PROCESS FOR MANUFACTURING SAME - A polyethylene microporous membrane has a Gurley air permeability of 1 to 1,000 sec/100 mL/25 μm, wherein the total length of waviness widths in the width direction of the polyethylene microporous membrane is not more than one-third of the overall width of the microporous membrane. The polyethylene microporous membrane has excellent planarity without compromising any other important physical property such as permeability. | 01-29-2015 |
| 20150037653 | MULTILAYERED MICROPOROUS POLYOLEFIN FILM - A polyolefin multilayer microporous membrane includes at least first microporous layers which form both surface layers of the membrane and at least a second microporous layer disposed between the both surface layers, wherein static friction coefficient of one of the surface layers of the polyolefin multilayer microporous membrane against another surface layer in a longitudinal direction (MD) is 1.1 or less, and wherein pore density calculated from an average pore radius measured by mercury porosimetry method and porosity, according to Formula (1) is 4 or more: | 02-05-2015 |
| 20150037654 | PERFORATED POLYMER FILMS HAVING IMPROVED TOLERANCE TO TENSILE STRESS - The invention relates to a perforated polymer film with porosity P from 30% to 50% and with an arrangement of perforations which is characterized by the perforation shape, the ratio of the semiaxes of the perforations, the orientation of the perforations, and the regular arrangement of the perforations, where the longitudinal tensile stress that the polymer film withstands without breaking is greater than that for identical porosity and any other arrangement of perforations which differs in at least one feature. | 02-05-2015 |
| 20150044541 | LAMINATED POROUS FILM, SEPARATOR FOR BATTERY, AND BATTERY - Disclosed is a laminated porous film which has both gas permeability and heat resistance and can exhibit excellent smoothness and excellent pin extraction properties when used as a separator for a battery. The laminated porous film is characterized by having a heat-resistant layer laminated on at least one surface of a polyolefin resin porous film, wherein the heat-resistant layer comprises a filler and a resin binder, and wherein the surface of the heat-resistant layer has a static friction coefficient of 0.45 or less, a gas permeability degree of 2000 sec/100 ml or less and a tensile elastic modulus of 400 to 1000 MPa when the film is stretched in the lengthwise direction at a stretching rate of 3%. | 02-12-2015 |
| 20150050544 | RECHARGEABLE LITHIUM BATTERY - A rechargeable lithium battery includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode. The separator includes a substrate having a first side facing the negative electrode and a second side facing the positive electrode. A first layer is positioned on the first side of the substrate and includes an organic material, and a second layer is positioned on the second side of the substrate and includes an inorganic material. | 02-19-2015 |
| 20150050545 | POROUS MEMBRANE AND MULTILAYER POROUS MEMBRANE - A multilayer porous membrane comprising a porous membrane containing a polyolefin resin as a main component; and a porous layer containing an inorganic filler and a resin binder and laminated on at least one surface of the porous membrane; wherein the porous membrane has an average pore size d=0.035 to 0.060 μm, a tortuosity τ | 02-19-2015 |
| 20150056492 | CROSS-LINKED MULTILAYER POROUS POLYMER MEMBRANE BATTERY SEPARATORS - A cross-linkable polyolefin composition (polyethylene, polypropylene or an ethylene-propylene copolymer) is coextruded with ultrahigh molecular weight polyethylene to form two-layer separator membranes, or three-layer separator membranes, for lithium-ion battery cells. In three-layer separator membranes, the cross-linkable polyolefin is formed as the outer faces of the separator for placement against facing surfaces of cell electrodes. The polymer materials initially contain plasticizer oil, which is removed from the extruded membranes, and the extruded membranes are also stretched to obtain a suitable open pore structure in the layered membranes to provide for suitable infiltration with a liquid electrolyte. The cross-linked polyolefin layer provides strength at elevated temperatures and the lower-melting, ultrahigh molecular weight polyethylene layer provides the separator membrane with a thermal shutdown capability. | 02-26-2015 |
| 20150056493 | COATED POROUS SEPARATORS AND COATED ELECTRODES FOR LITHIUM BATTERIES - An example of a porous separator includes an untreated porous polymer membrane, and a nanocomposite structure i) formed on a surface of the porous polymer membrane, or ii) dispersed in pores of the porous polymer membrane, or iii) combinations of i and ii. The nanocomposite structure is selected from the group consisting of a carbon nanocomposite structure, a metal oxide nanocomposite structure, and a mixed carbon and metal oxide nanocomposite structure. | 02-26-2015 |
| 20150056494 | SEPARATOR WITH HEAT RESISTANT INSULATION LAYER - A separator with a heat resistant insulation layer includes a porous substrate layer and a heat resistant insulation layer formed on one surface or both surfaces of the porous substrate layer and containing inorganic particles and a binder. The ratio of tensile strength in MD direction×fracture strain in MD direction to the tensile strength in TD direction×fracture strain in RD direction is in a range from 0.3 to 20. A ratio of the unit mass of the heat resistant insulation layer to the unit mass of the porous substrate layer is in a range from 0.5 to 2.5. Accordingly, the separator with a heat resistant insulation layer can have improved resistance to an internal short-circuit (shorting resistance). | 02-26-2015 |
| 20150086838 | BATTERY SEPARATOR HAVING IMPROVED WETTABILITY AND METHODS OF USE THEREFOR - According to one embodiment, a separator for a lead-acid battery includes a microporous polymer membrane and a nonwoven fiber mat that is positioned adjacent a surface of the microporous polymer membrane to reinforce the microporous polymer membrane. The fiber mat includes a plurality of glass fibers and an acid resistant binder that couples the plurality of glass fibers together to form the fiber mat. The binder includes one or more hydrophilic functional groups that are coupled with a backbone of the binder and that increase the wettability of the fiber mat by enhancing the fiber mat's ability to function or interact with water or an electrolyte of the lead-acid battery. | 03-26-2015 |
| 20150093627 | HIGHLY POROUS SEPARATOR FILM HAVING PARTIAL LAMINATION - The invention relates to a biaxially oriented, single or multilayer porous film comprising at least one porous layer, said layer containing at least one propylene polymer, wherein (i) the porosity of the porous film is 30% to 80%, and (ii) the permeability of the porous film is <1000 s (Gurley value). The invention is characterized in that (iii) the porous film is provided with a partially inorganic, preferably ceramic lamination, and (iv) in that the laminated porous film has a Gurley value of <1200 s. The invention further relates to a method for producing such a film, and to the use thereof in high-energy or high-performance systems, in particular in lithium batteries, lithium ion batteries, lithium polymer batteries, and alkaline earth batteries. | 04-02-2015 |
| 20150093628 | LITHIUM ION BATTERY COMPONENTS WITH CHELATING AGENTS HAVING ORIENTED PERMANENT DIPOLE MOMENTS - One example of a lithium ion battery component is a lithium ion battery separator including a planar microporous polymer membrane and a chelating agent bonded to the planar microporous polymer membrane through a linking group. The chelating agent is bonded such that the permanent dipole moment of the chelating agent is oriented perpendicular to the plane of the planar microporous polymer membrane. | 04-02-2015 |
| 20150104690 | POROUS INTERLAYER FOR A LITHIUM-SULFUR BATTERY - A porous interlayer for a lithium-sulfur battery includes an electronic component and a negatively charged or chargeable lithium ion conducting component. The electronic component is selected from a carbon material, a conductive polymeric material, and combinations thereof. In an example, the porous interlayer may be disposed between a sulfur-based positive electrode and a porous polymer separator in a lithium-sulfur battery. In another example, the porous interlayer may be formed on a surface of a porous polymer separator. | 04-16-2015 |
| 20150111087 | COATED SEPARATOR AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME - A separator for a battery and an electronic device, the separator including a separator substrate; and a separator coating layer coated on at least one surface of the separator substrate, the separator coating layer including a binder and at least one quaternary ammonium salt. | 04-23-2015 |
| 20150125736 | RECHARGEABLE LITHIUM BATTERY - A rechargeable lithium battery includes an electrode assembly including a positive electrode including a positive current collector, a first separator on the positive electrode, a negative electrode including a negative current collector on the first separator, and a second separator on the negative electrode. The positive current collector and the negative current collector each have respective uncoated regions at two sides thereof. The first separator includes a first substrate including a polyolefin-based resin particle, and a coating layer on a side of the first substrate the coating layer being an inorganic layer or an organic layer. The second separator includes a second substrate including a polyolefin-based resin particle, and an outermost region and/or a central region of the electrode assembly includes one of the uncoated regions of the positive current collector, the first separator, one of the uncoated regions of the negative current collector and the second separator. | 05-07-2015 |
| 20150125737 | COMPOSITE SEPARATOR FOR ELECTROCHEMICAL CELL CAPABLE OF SUSTAINED SHUTDOWN - This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nonwoven consisting essentially of a plurality of fibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nonwoven with enhanced properties is also provided. | 05-07-2015 |
| 20150132633 | SEPARATOR FOR ALKALI METAL ION BATTERY - A separator for an alkali metal ion rechargeable battery includes a porous ceramic alkali ion conductive membrane which is inert to liquid alkali ion solution as well as anode and cathode materials. The porous ceramic separator is structurally self-supporting and maintains its structural integrity at high temperature. The ceramic separator may have a thickness of at least | 05-14-2015 |
| 20150140404 | POROUS SEPARATOR COATED WITH ORGANIC/INORGANIC COMPLEX USING AQUEOUS COATING SOLUTION, METHOD FOR MANUFACTURING SAME, AND ELECTROCHEMICAL DEVICE USING SAME - There is provided a separator used in an electrochemical device and more particularly, to a porous separator in which an organic/inorganic complex coating layer is applied to a porous substrate, a method for preparing the same, and an electrochemical device using the same. | 05-21-2015 |
| 20150303427 | Organic/Inorganic Complex Coating Porous Separator And Secondary Battery Using The Same - There is provided an organic/inorganic complex coating porous separator including a porous substrate, and an organic/inorganic complex coating layer formed in a single layer or multiple layers on a single surface or both surfaces of the porous substrate or at least a part of a pore portion of the porous substrate using a coating solution comprising a binder dispersed or suspended in a certain size and selectively comprising inorganic particles, and a secondary battery including the same. According to the present invention, since the coating solution comprising the binder dispersed in a certain size or less in a solvent is coated/dried on the porous substrate, a organic/inorganic complex coating porous separator having excellent air permeability and adhesive strength and a secondary battery including the organic/inorganic complex coating porous separator are provided. | 10-22-2015 |
| 20150303428 | HEAT-RESISTANT SYNTHETIC RESIN MICROPOROUS FILM, METHOD OF PRODUCING THE SAME, SEPARATOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A heat-resistant synthetic resin microporous film is provided which is excellent in both heat resistance and permeability to ions such as lithium ions and does not make its production line dirty. A method of producing the heat-resistant synthetic resin microporous film is also provided. The production method of a heat-resistant synthetic resin microporous film includes causing 5 to 25 parts by weight of a radical-polymerizable monomer including a trifunctional or higher polyfunctional acrylic monomer to adhere to 100 parts by weight of a synthetic resin microporous film, and then irradiating the synthetic resin microporous film with ionizing radiation at an absorbed dose of 10 to 150 kGy. | 10-22-2015 |
| 20150306539 | MICROPOROUS LAMINATED MEMBRANE AND METHOD FOR PRODUCING THE SAME - Disclosed is a microporous laminated membrane including a nonwoven-fabric substrate and a microporous membrane. The microporous membrane is disposed on at least one side of the nonwoven-fabric substrate. The microporous membrane includes a multiplicity of interconnecting micropores. The micropores have an average pore diameter of from 0.01 to 10 μm. The microporous membrane has an arithmetic mean surface roughness Sa of 0.5 μm or less. The microporous laminated membrane has an air permeability of from 0.5 to 30 seconds. The microporous laminated membrane has a tensile strength of 4.0 N/15 mm or more. The microporous laminated membrane does not undergo interfacial peeling between the substrate and the microporous membrane as a result of a tape peel test. | 10-29-2015 |
| 20150318528 | NON-AQUEOUS-SECONDARY-BATTERY SEPARATOR AND NON-AQUEOUS SECONDARY BATTERY - Provided is a non-aqueous-secondary-battery separator including: a microporous membrane containing a fibrillar resin; and an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and contains a fibrillar polyvinylidene fluoride resin, in which an average pore diameter acquired from a specific surface area of the microporous membrane is from 50 nm to 90 nm or a fibrillar diameter acquired from a specific surface area of the microporous membrane is from 150 nm to 350 nm. | 11-05-2015 |
| 20150318531 | POLYMER FUNCTIONALIZED GRAPHENE OXIDE AND THERMALLY RESPONSIVE ION PERMEABLE MEMBRANES MADE THEREFROM - Thermally responsive materials, porous membranes comprising the thermally responsive materials, and batteries incorporating the porous membranes as thermally responsive separation membranes are provided. Also provided are methods of making the thermally responsive materials. The thermally responsive materials comprise upper critical solution temperature (UCST) polymers covalently bound to a support substrate. | 11-05-2015 |
| 20150325829 | SEPARATOR HAVING HIGH ELECTROLYTE WETTABILITY FOR SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME - Provided is a separator having high wettability for a secondary battery, including a polyolefin substrate, a nanofiber hot melt layer formed on one or both surfaces of the substrate, and a nanofiber electrolyte wetting layer formed on the hot melt layer, wherein the hot melt layer is applied in an amount of 0.05˜2.5 g/m | 11-12-2015 |
| 20150325830 | NANO MICROPOROUS DIAPHRAGM OF POST-CROSSLINKED RUBBER AND POLYOLEFIN COMPOSITE, AND MANUFACTURING METHOD THEREOF - The present invention relates to a composite nano microporous diaphragm for use in lithium ion cells using polyolefin modified with post-crosslinked rubber and manufacturing method thereof. The microporous diaphragm at least comprises a nano microporous diaphragm A layer with a chemical gel content of more than 20%, the microscopic structure thereof is designed to be the rubber material that has been evenly dispersed and has subjected to a post-crosslinking treatment in polyolefin nano microfiber matrix, forming a nano microporous diaphragm of rubber-plastic composite. The nano microporous diaphragm with high strength, thermal cutoff, high temperature resistance, as well as good liquid absorption and swelling and compression elasticity can be applied to lithium ion power cells with high safety and long cycling life. | 11-12-2015 |
| 20150333309 | Separator And Lithium-Ion Secondary Battery - The present disclosure provides a separator and a lithium-ion secondary battery. The separator comprises: a microporous membrane having micropores; and a coating provided on a surface of the microporous membrane. The coating comprises polymer particles and binder particles. The polymer particle is a hollow shell structure which comprises a shell and a cavity positioned in the shell, an outer surface of the shell is distributed with nanopores which are communicated with the cavity, a particle diameter of the polymer particle is larger than a pore size of the micropore of the microporous membrane; a particle diameter of the binder particle is larger than the pore size of the micropore of the microporous membrane. The lithium-ion secondary battery comprises: a positive electrode plate; a negative electrode plate; the aforementioned separator interposed between the positive electrode plate and the negative electrode plate; and an electrolyte. | 11-19-2015 |
| 20150333310 | POROUS SEPARATION MEMBRANE, SECONDARY BATTERY USING SAME, AND METHOD FOR MANUFACTURING SAID SECONDARY BATTERY - Provides are a porous separator that prevents a short-circuit between two electrodes by using a porous nanofiber web where nanofibers have a core-shell structure, to thereby promote safety and thinning simultaneously. The porous separator includes: a porous nonwoven fabric playing a support role and having micropores; and a porous nanofiber web that is laminated on one side of the porous nonwoven fabric, and plays a role of an adhesive layer and an ion-containing layer when the porous nanofiber web is in close contact with an opposed electrode, wherein a portion of the porous nanofiber web is incorporated in a surface layer of the porous nonwoven fabric, to thus partially block pores of the porous nonwoven fabric and to thereby lower porosity of the porous nonwoven fabric. The porous nanofiber web has nanofibers obtained by spinning a mixture of a swellable polymer and a non-swellable polymer to have a core-shell structure. | 11-19-2015 |
| 20150333311 | Micro-Porous Hybrid Film Having Electro-Chemical Stability and Method for Preparing the Same - Provided are a micro-porous hybrid film and a method for preparing the same, and more particularly, a micro-porous hybrid film capable of improving reliability of a battery by simultaneously improving thermal stability at a high temperature and water properties, and a method for preparing the same. In addition, the present invention relates to a micro-porous hybrid film suitable for a separator of a high capacity/high output lithium secondary battery capable of increasing production stability, long term stability, and performance of the battery by improving adhesive force between a micro-porous film and a coating layer and permeability and minimizing a water content by the coating layer. | 11-19-2015 |
| 20150349312 | SEPARATOR, METHOD FOR PRODUCING THE SAME AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME - A separator includes a porous substrate, a porous organic-inorganic coating layer formed on at least one surface of the porous substrate, and an organic coating layer formed on the surface of the organic-inorganic coating layer. The porous organic-inorganic coating layer includes a mixture of inorganic particles and a first binder polymer. The first binder polymer contains a copolymer including (a) a first monomer unit including either at least one amine group or at least one amide group or both in the side chain thereof and (b) a (meth)acrylate having a C | 12-03-2015 |
| 20150357619 | SEPARATOR HAVING POROUS COATING LAYER, AND ELECTROCHEMICAL DEVICE CONTAINING THE SAME - A separator includes a monolayer-type polyolefin-based micro-porous film having a porosity of 40 to 60%, an average pore diameter of 60 nm or less, and an air permeability of 350 s/100 mL or less; and a porous coating layer formed on at least one surface of the micro-porous film and made of a mixture of a plurality of inorganic particles and a binder polymer. An electrochemical device having the above separator has excellent thermal stability and allows a high power while minimizing the occurrence of leak current. | 12-10-2015 |
| 20150372275 | SEPARATOR, METHOD OF MANUFACTURING THE SAME AND BATTERY USING THE SAME - A polyolefin-based porous separator, including a first polyolefin-based porous film on a first surface of a second polyolefin-based porous film, and a third polyolefin-based porous film on a second surface of the second polyolefin-based porous film, each of the first and third polyolefin-based porous films containing inorganic particles having an average particle size of 10 nm to 100 nm, a thickness ratio of the first polyolefin-based porous film, the second polyolefin-based porous film, and the third polyolefin-based porous film being 0.5 to 1.5:1 to 6:0.5 to 1.5, and thermal shrinkage rates of the separator in a machine direction and a transverse direction measured after standing at 120° C. for 1 hour each being 5% or less, and air permeability of the separator being 250 sec/100 cc or less. | 12-24-2015 |
| 20150372276 | SEPARATOR FOR BATTERIES AND METHOD OF PRODUCING SEPARATOR FOR BATTERIES - A battery separator includes a microporous polyolefin membrane having a thickness of 16 μm or less, and a modifying porous layer comprising a fluorine resin and an inorganic particle or cross-linked polymer particle, the modifying porous layer being laminated on one side of the microporous polyolefin membrane, wherein the microporous polyolefin membrane has (a) a shutdown temperature of 135° C. or lower, and (b) a rate of air resistance change of 1×10 | 12-24-2015 |
| 20150372277 | NON-AQUEOUS-SECONDARY-BATTERY SEPARATOR AND NON-AQUEOUS SECONDARY BATTERY - There is provided a non-aqueous-secondary-battery separator formed of a composite membrane including: a porous base material containing a thermoplastic resin; and a heat-resistant porous layer provided on one or both surfaces of the porous base material and containing an organic binder and an inorganic filler, in which the tortuosity rate of the composite membrane is from 1.5 to 2.0. | 12-24-2015 |
| 20150380707 | NON-AQUEOUS-SECONDARY-BATTERY SEPARATOR AND NON-AQUEOUS SECONDARY BATTERY - Provided is a non-aqueous-secondary-battery separator including: a microporous membrane; and an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and includes a fibrillar polyvinylidene fluoride resin, in which an average hole diameter acquired from the specific surface area of the microporous membrane is greater than 90 nm and equal to or smaller than 250 nm, peeling strength between the microporous membrane and the adhesive porous layer is equal to or greater than 0.10 N/cm, and a fibrillar diameter acquired from the specific surface area of the adhesive porous layer is from 50 nm to 70 nm. | 12-31-2015 |
| 20160006011 | HEAT-RESISTANT POROUS SEPARATOR AND METHOD FOR MANUFACTURING THE SAME - The present disclosure provides a heat-resistant porous separator. The heat-resistant porous separator includes a porous substrate and a composite coating layer coated on at least one surface of the substrate. The composite coating layer is an interpenetrating polymer network structure formed by a hydrophilic polymer and silicon dioxide. A method for manufacturing a heat-resistant porous separator is also provided herein. | 01-07-2016 |
| 20160006012 | POLYOLEFIN MICROPOROUS MEMBRANE AND METHOD OF PRODUCING THE SAME, SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY AND NON-AQUEOUS SECONDARY BATTERY - The present invention provides a separator for a non-aqueous secondary battery, the separator including: a polyolefin microporous membrane having a degree of crystallinity of from 60 to 85% and a tie molecular volume fraction of from 0.7 to 1.7%; and a heat resistant porous layer containing a heat resistant resin and provided on one side or both sides of the polyolefin microporous membrane. | 01-07-2016 |
| 20160013463 | MEMBRANES FOR ELECTROCHEMICAL CELLS | 01-14-2016 |
| 20160013464 | POROUS SEPARATOR HAVING INVERSE OPAL STRUCTURE FOR SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME | 01-14-2016 |
| 20160028063 | PROTECTED ACTIVE METAL ELECTRODE AND BATTERY CELL STRUCTURES WITH NON-AQUEOUS INTERLAYER ARCHITECTURE - Active metal and active metal intercalation electrode structures and battery cells having ionically conductive protective architecture including an active metal (e.g., lithium) conductive impervious layer separated from the electrode (anode) by a porous separator impregnated with a non-aqueous electrolyte (anolyte). This protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the impervious layer, which may include aqueous or non-aqueous liquid electrolytes (catholytes) and/or a variety of electrochemically active materials, including liquid, solid and gaseous oxidizers. Safety additives and designs that facilitate manufacture are also provided. | 01-28-2016 |
| 20160028064 | ELECTRODE ASSEMBLY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - An electrode assembly, comprises one or more first electrodes comprising a cathode; one or more second electrodes comprising an anode; and a separator sheet having a zigzag form interposed therebetween. The separator sheet comprises a first porous polymer substrate; a first coating layer formed on one surface of the first porous polymer substrate and comprising a polymer binder, the first coating layer being faced with the cathode; and a second coating layer formed on the other surface of the first porous polymer substrate and comprising a mixture a polymer binder and inorganic particles, the second coating layer being faced with the anode and having a composition, a thickness and a porosity different from those of the first porous coating layer. A separator has porous coating layers with a different composition, thickness or porosity formed on each surface thereof. | 01-28-2016 |
| 20160028066 | SECONDARY BATTERY WITH IMPROVED LIFE CHARACTERISTICS - The present disclosure refers to a secondary battery which comprises a high-voltage cathode active material and a separator whose pores are not obstructed even though being used together with the high-voltage cathode active material, thereby preventing the obstruction of pores in the separator and the formation of a dendrite in the anode and eventually providing good battery life performance. | 01-28-2016 |
| 20160036027 | SEPARATOR FOR NONAQUEOUS SECONDARY BATTERY, AND NONAQUEOUS SECONDARY BATTERY - An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to electrodes. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystal size of 1 to 13 nm. | 02-04-2016 |
| 20160056438 | SEPARATOR HAVING POROUS COATING LAYER, METHOD FOR MANUFACTURING THE SAME AND ELECTROCHEMICAL DEVICE HAVING 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 binder and a plurality of inorganic particles, wherein the binder includes a crosslinked binder. This separator may improve high temperature cycle performance, discharge characteristics and thermal resistance of an electrochemical device since the separator exhibits improved insolubility and impregnation to electrolyte and improved thermal resistance. | 02-25-2016 |
| 20160064713 | Polyolefin-based Porous Film and Method for Producing the Same - A method for producing a polyolefin-based porous film includes an (A) step: a raw fabric forming step for forming a non-porous raw fabric from a polyolefin-based resin composition, a (B) step: an MD cold stretching step for cold stretching the non-porous raw fabric obtained in the (A) step at a temperature of −20° C. to (Tm−30)° C. (Tm is a melting point (° C.) of the non-porous raw fabric) in an extruding direction (MD) of the raw fabric to make the raw fabric porous; a (D) step: a TD cold stretching step for cold stretching a film processed in the (B) step in a direction (TD) perpendicular to the MD, and an (H) step: a thermal fixing step, in the above order. A thermal fixing temperature T | 03-03-2016 |
| 20160064715 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery can efficiently discharge a gas generated to the outside of an electrode and exhibits a low decrease in battery capacity even when used for a long period of time in the case of using an aqueous binder as a binder of a negative electrode active material. The non-aqueous electrolyte secondary battery includes a negative electrode active material layer on the surface of a negative electrode current collector, in which the negative electrode active material layer contains an aqueous binder, a highly porous layer having a porosity that is higher than that of the separator is provided between the negative electrode active material layer and the separator, the porosity of the highly porous layer being from 50 to 90%, and a ratio of a thickness of the highly porous layer to a thickness of the negative electrode active material layer being from 0.01 to 0.4. | 03-03-2016 |
| 20160118639 | MULTILAYER, MICROPOROUS POLYOLEFIN MEMBRANE, AND PRODUCTION METHOD THEREOF - Provided is a microporous polyolefin membrane which has excellent oxidation resistance and electrolyte injection performance and further has excellent permeability and strength balance. The multilayer, microporous polyolefin membrane has a first microporous layer containing polypropylene. The electrolyte injection performance is 20 seconds or less, at least one surface layer is the first microporous layer, and the PP distribution in the first microporous layer is uniform in the in-plane direction. | 04-28-2016 |
| 20160126520 | BATTERY SEPARATOR AND METHOD OF PRODUCING THE SAME - A battery separator which is a laminated polyolefin microporous membrane, comprising a polyolefin microporous membrane, and a modifying porous layer comprising a water-soluble resin or water-dispersible resin, and fine particles, the modifying porous layer being laminated on at least one surface of the polyolefin microporous membrane, wherein the polyolefin microporous membrane comprises a polyethylene resin and has (a) a shutdown temperature (a temperature at which an air resistance measured while heating the polyolefin microporous membrane at a temperature rise rate of 5° C./min reaches 1×10 | 05-05-2016 |
| 20160149181 | MICROPOROUS MEMBRANE SEPARATORS FOR LITHIUM ION RECHARGEABLE BATTERIES AND RELATED METHODS - The present invention relates in at least selected embodiments to novel or improved microporous battery separators for lithium rechargeable batteries and/or related methods of making and/or using such separators. A particular inventive dry process battery separator or membrane separator exhibits a thickness that is less than about 14 μm and has increased strength performance as defined by reduced splittiness. The mode of splitting failure has been investigated, and the improvement in splittiness quantified by a novel test method known as the Composite Splittiness Index (CSI). | 05-26-2016 |
| 20160149182 | MULTILAYER MICROPOROUS SEPARATORS FOR LITHIUM ION SECONDARY BATTERIES AND RELATED METHODS - An improved multilayer laminated microporous battery separator for a lithium ion secondary battery, and/or a method of making or using this separator is provided. The preferred inventive dry process separator is a tri-layer laminated Polypropylene/Polyethylene/Polypropylene microporous membrane with a thickness range of 12 μm to 30 μm having improved puncture strength and low electrical resistance for improved cycling and charge performance in a lithium ion battery. In addition, the preferred inventive separator's or membrane's low Electrical Resistance and high porosity provides superior charge rate performance in a lithium battery for high power applications. | 05-26-2016 |
| 20160156010 | SEPARATOR FOR LITHIUM-ION BATTERY AND METHOD FOR PREPARING THE SAME | 06-02-2016 |
| 20160164060 | COATED SEPARATORS FOR LITHIUM BATTERIES AND RELATED METHODS - In accordance with at least selected embodiments, new or improved ceramic coated separators, membranes, films, or the like for use in lithium batteries, new or improved batteries including such ceramic coated separators, membranes, films, or the like, and methods of making or using such ceramic coated separators, membranes, films or the like are disclosed. In accordance with at least certain embodiments, new or improved aqueous or water-based polymeric coated separators, membranes, films, or the like are disclosed. In accordance with at least particular embodiments, new or improved aqueous or water-based polyvinylidene fluoride (PVDF) or polyvinylidene difluoride (PVDF) homopolymer or co-polymers of PVDF with hexafluoropropylene (HFP or [—CF(CF | 06-09-2016 |
| 20160172645 | MULTI-LAYERED POROUS FILM AND METHOD FOR PREPARING THE SAME | 06-16-2016 |
| 20160197327 | COATED SEPARATOR WITH COMPRESSIBLE ELASTICITY, THERMAL SHUTDOWN AND HIGH TEMPERATURE RESISTANCE | 07-07-2016 |
| 20160204409 | POLYLACTAM COATED SEPARATOR MEMBRANES FOR LITHIUM ION SECONDARY BATTERIES AND RELATED COATING FORMULATIONS | 07-14-2016 |
| 20160254513 | Laminated Separator, Polyolefin Microporous Membrane, and Separator for Electricity Storage Device | 09-01-2016 |
| 20160380250 | SEPARATOR FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND BATTERY INCLUDING SAME - A separator | 12-29-2016 |
| 20190148777 | Electrode Assembly Of Novel Structure And Battery Cell Comprising The Same | 05-16-2019 |
