BATTERY MODULE, AND METHOD OF MANUFACTURING BATTERY MODULE

A battery module includes a plurality of battery cells and a function material. The function material is located between adjacent battery cells. The function material includes an elastic particle and a binder. The elastic particle is dispersed in the binder.

Laminierter Separator für Sekundärbatterie mit wasserfreiem Elektrolyt

Die vorliegende Erfindung stellt einen laminierten Separator für eine Sekundärbatterie mit wasserfreiem Elektrolyt bereit, der auch unter Langzeitladung unter Bedingungen hoher Spannung in seinen Eigenschaften nicht verändert wird und Wärmebeständigkeit zeigt. Der laminierte Separator für eine Sekundärbatterie mit wasserfreiem Elektrolyt schließt einen porösen Polyolefinfilm und eine poröse Schicht ein, die poröse Schicht enthält ein Bindemittelharz und einen Füllstoff, und eine Fläche einer Öffnung in dem laminierten Separator für eine Sekundärbatterie mit wasserfreiem Elektrolyt beträgt 7,0 mm2 oder weniger, wenn der laminierte Separator für eine Sekundärbattereie mit wasserfreiem Elektrolyt einem bestimmten Wärmebeständigkeitstest unterzogen wird.

COMPOSITE LITHIUM BATTERY SEPARATOR AND PREPARATION METHOD THEREFOR

The present disclosure relates to a composite lithium battery separator and a preparation process therefor. The composite lithium battery separator includes a base film or a ceramic film, and a coating layer covering one side or both sides of the base film or the ceramic film. The coating layer is formed by coating a slurry. The slurry includes 5%-45% by weight of a coating polymer and 55%-95% by weight of an organic solvent, and the coating polymer includes 10-100 parts by weight of a fluorine or acrylic resin polymer, 0.5-10 parts of a polymer adhesive, and 0-90 parts of inorganic nanoparticles.

SEPARATOR FOR POWER STORAGE DEVICES, AND POWER STORAGE DEVICE

A separator for an electricity storage device, including: a layer (A) containing a polyolefin; and a layer (B) disposed on at least one surface of the layer (A) and containing an inorganic filler, a water-insoluble binder, a water-soluble binder, and a polyacrylic acid-based dispersant, wherein a heat shrinkage rate S1 of the separator for the electricity storage device at 140°C in propylene carbonate is 5% or less.

COMPOSITION FOR ELECTROCHEMICAL ELEMENT FUNCTIONAL LAYER, LAMINATE FOR ELECTROCHEMICAL ELEMENT, AND ELECTROCHEMICAL ELEMENT

The purpose of the present invention is to provide a composition capable of forming an electrochemical element functional layer that can provide excellent process adhesiveness and blocking resistance to electrochemical element members such as electrodes and separators and that enables electrochemical elements to exert excellent electrochemical properties. The composition for an electrochemical element functional layer according to the present invention is characterized by containing a particulate polymer and a binding material and is characterized in that the molecular weight distribution (weight average molecular weight (Mw)/number average molecular weight (Mn)) of the particulate polymer is 1.0-3.0.

INGREDIENT FOR SECONDARY CELL SEPARATOR COATING MATERIAL, SECONDARY CELL SEPARATOR COATING MATERIAL, SECONDARY CELL SEPARATOR, METHOD FOR PRODUCING SECONDARY CELL SEPARATOR, AND SECONDARY CELL

In an ingredient for a secondary cell separator coating material including a core shell particle including a core layer containing a first polymer and a shell layer covering the first polymer and including a second polymer, the first polymer has a repeating unit derived from alkyl (meth)acrylate; the second polymer has a repeating unit derived from (meth)acrylamide of 40 to 97% by mass, and a repeating unit derived from a carboxy group-containing vinyl monomer of 3 to 60% by mass; and a ratio of the second polymer to the first polymer is 4 to 250.

Lead Storage Battery

Provided is a lead storage battery provided with a positive electrode, a negative electrode, an electrolytic solution, a separator interposed between the positive electrode and the negative electrode, and non-woven fabric. The non-woven fabric includes fibers and a filler, and is disposed between the positive electrode and the separator. The separator is provided with a rib formed in a protruding shape from a base portion on the positive electrode side. The relation T/R, which is between the thickness T of the non-woven fabric and the height R from the base portion of the separator taken as a starting point to the top of the rib, is 0.10-11.

LITHIUM ION SECONDARY BATTERY AND SEPARATION MEMBRANE

One aspect of the present invention provides a lithium ion secondary battery which sequentially comprises a positive electrode mixture layer, a separation membrane, and a negative electrode mixture layer in the stated order, wherein: the positive electrode mixture layer contains a positive electrode active material, a first lithium salt, and a first solvent; the negative electrode mixture layer contains a negative electrode active material, a second lithium salt, and a second solvent that is different from the first solvent; and the separation membrane contains a third lithium salt and a polymer that comprises, as a monomer unit, a monomer represented by formula (1). [wherein, in formula (1), R1 represents a hydrogen atom or a methyl group, R2 represents a divalent organic group, R3, R4 and R5 each independently represents a hydrogen atom or a monovalent organic group, and X- represents a counter anion.] ...

SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY

The present invention pertains to a separator for a non-aqueous secondary battery, the separator comprising a porous base material and a heat-resistant porous layer that is provided on one surface or both surfaces of the porous base material and contains a resin and inorganic particles, wherein: (1) said resin includes a copolymer having a fluorinated vinylidene unit and a hexafluoropropylene unit and having a weight-average molecular weight of at least 10,000 and less than 60,000, or includes a resin containing a polyfluorinated vinylidene resin and an acrylic resin, the mass ratio of the polyfluorinated vinylidene resin and the acrylic resin contained in the heat-resistant porous layer being 90:10 to 50:50, the mass percentage of the inorganic particles in the heat-resistant porous layer is 50 mass% to 90 mass%, and the inorganic particles include first inorganic particles having an average primary particle size of 0.01 μm to 0.3 μm and second inorganic particles having an average primary ...

COATING COMPOSITION AND SUBSTRATE HAVING COATING FILM

... [Problem] To provide a composition that makes it possible to form an easy-drying coating on a work surface and is used in a coating liquid for a positive electrode, negative electrode, separator, etc. of a lithium-ion battery, or a paint, an ink, and an adhesive which mainly contain polymers. [Solution] A coating composition contains a filler, a binder, a thickener, and a solvent, and is characterized in that: the binder is at least one selected from a diene rubber and (meth)acrylate polymer; the viscosity of the coating composition is 1.0×106 Pa∙s or less as measured at a shear rate of 0.01/s; and the thixotropy index (TI) is 1.1×106 or higher: [thixotropy index (TI)]=[viscosity of the coating composition as measured at a shear rate of 0.01/s]/[viscosity of the coating composition as measured at a shear rate of 10,000/s].

SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including the same. The separator includes a porous substrate, and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, a second structural unit derived from (meth)acrylonitrile, and a third structural unit including at least one of structural units derived from (meth)acrylamidosulfonic acid, a (meth)acrylamidosulfonic acid salt, or a combination thereof; inorganic particles; and an organic filler; wherein the organic filler is included in an amount of 0.1 to 50 wt % based on a total amount of the organic filler and the inorganic particles.

Cell separator

A separator for a cell comprises a polymer matrix and a plasticiser, wherein the separator is substantially free from electrolyte. The separator is thermally manufactured, e.g. extruded. The polymer matrix preferably comprises one or more compounds selected from polyvinylidene fluoride, poly(vinylidene fluoride-co-hexafluoropropylene), poly(methyl methacrylate), polyethylene oxide, polyacrylonitrile, polyvinyl chloride, polytetrafluoroethylene, polyethylene, and polypropylene. The plasticiser preferably comprises one or more compounds selected from ethylene carbonate, propylene carbonate, gamma-butyrolactone, vinylene carbonate, fluoroethylene carbonate, trimethyl phosphate, sulfolane, tetraethylene glycol dimethyl ether, triethylene glycol dimethyl ether and ethylmethoxyethyl sulfone, and is most preferably one of the carbonates. A method of forming a Li-ion cell using the separator is also disclosed, in which the method involves heating to a temperature above 60°C during formation of ...

MOF based composite electrolyte for lithium metal batteries

In an embodiment, a metal-organic framework electrolyte layer, can comprise a plurality of metal-organic frameworks having a porous structure and comprising a solvated salt absorbed in the porous structure; and a polymer. The MOF electrolyte layer can have at least one of a density of less than or equal to 0.3 g/cm3or a Brunauer-Emmett-Teller surface area of 500 to 4,000 m2/g. A lithium metal battery can comprise the metal-organic framework electrolyte layer.

Lithium ion battery separator

The invention relates to a separator for non-aqueous-type electrochemical devices that has been coated with a polymer binder composition having polymer particles of two different sizes, one fraction of the polymer particles with a weight average particle size of less than 1.5 micron, and the other fraction of the polymer particles with a weight average particle size of greater than 1.5 microns. The bi-modal polymer particles provide an uneven coating surface that creates voids between the separator and adjoining electrodes, allowing for expansion of the battery components during the charging and discharging cycle, with little or no increase in the size of the battery itself. The bi-modal polymer coating can be used in non-aqueous-type electrochemical devices, such as batteries and electric double layer capacitors.

Acrylonitrile copolymer binder and application thereof in lithium ion batteries

The invention relates to an acrylonitrile copolymer binder and application thereof in lithium ion battery, belonging to the field of lithium ion battery. The technical problem to be solved by the invention is to provide an acrylonitrile copolymer binder comprising the following structural units in percentage by weight: 78-95% of acrylonitrile unit, 1-10% of acrylic ester unit and 2-15% of acrylamide unit. For the binder of the invention, acrylonitrile monomer is taken as the main body, and acrylic ester monomer, acrylamide monomer or acrylate salt monomer with strong polarity is added to acrylonitrile for copolymerization to enable the flexibility of a polymer membrane, the affinity of an electrolyte and the proper swelling degree in the electrolyte while keeping strong adhesion or intermolecular force of acrylonitrile polymer molecules, so as to fit the periodic volume changes of electrode active materials along with lithium ion intercalation/deintercalation in charging and discharging ...

SEPARATOR FOR SECONDARY BATTERY

A separator for a secondary battery including a porous separator substrate including a polymer; and a coating layer on at least one surface of the porous separator substrate. The coating layer includes a crystalline first binder and a noncrystalline second binder. The crystalline first binder and the noncrystalline second binder are independently an aqueous emulsion type binder, thereby ensuring adhesion strength between the separator and a positive electrode and between the separator and a negative electrode even in the presence of an electrolyte solution.

Protected electrode structures

An electrode structure and its method of manufacture are disclosed. The disclosed electrode structures may be manufactured by depositing a first release layer on a first carrier substrate. A first protective layer may be deposited on a surface of the first release layer and a first electroactive material layer may then be deposited on the first protective layer.

SEPARATOR, AND SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND APPARATUS INCLUDING THE SAME

The present application provides a separator, which may include a substrate and a coating provided on at least one surface of the substrate, the coating including inorganic particles, first and second organic particles, organic-inorganic hybrid composite compound particles, and a first binder; where the first organic particles and the second organic particles may be embedded in the inorganic particles and the organic-inorganic hybrid composite compound particles and form bulges on a surface of the coating; the first organic particles and the second organic particles each may be independently one or more polymers containing one or more groups selected from: halogen, a phenyl group, an epoxy group, a cyano group, an ester group, an amide group, a hydroxyl group, a carboxyl group, a sulfonyl ester group, and a pyrrolidone group; and the first binder may include one or more linear copolymers containing a hydroxyl group and a carboxylate moiety.

NEGATIVE ELECTRODE, LITHIUM ION SECONDARY BATTERY, MANUFACTURING METHOD OF NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND MANUFACTURING METHOD OF NEGATIVE ELECTRODE SHEET FOR LITHIUM ION SECONDARY BATTERY

There is provided a negative electrode (100) for a lithium ion secondary battery, in which a negative electrode active material layer (120) containing at least a negative electrode active material and a binder is formed on a current collector (110). An insulating layer (300) containing at least an insulating material and a binder is further provided on a surface of the negative electrode active material layer (120), the binder contained in the insulating layer (300) includes at least styrene-butadiene rubber and at least one selected from carboxymethyl cellulose and salts thereof, and the binder contained in the negative electrode active material layer (120) is at least one selected from polyacrylic acid and salts thereof.

VINYLIDENE FLUORIDE POLYMER DISPERSION

The present invention pertains to an aqueous dispersion of a vinylidene fluoride polymer having a high molecular weight and possessing a substantially linear structure, leading to reduced amount of gels/insoluble fractions, to a method for its preparation and to its use for the manufacture of electrochemical cell components, such as electrodes and/or composite separators or for the manufacture of membranes. 117-. (canceled)18. An aqueous dispersion [dispersion (D)] comprising particles of a vinylidene fluoride (VDF) polymer [polymer (A)] comprising recurring units derived from vinylidene fluoride (VDF) monomer , said polymer (A) comprising:(i) more than 85.0% moles of recurring units derived from VDF, with respect to the total number of recurring units of polymer (A);(ii) iodine-containing chain ends in an amount of 0.1 to 5.0 mmol/kg; and{'sub': 'w', '(iii) a weight averaged molecular weight (M) of at least 500 KDalton, when measured by GPC, using N,N-dimethylacetamide (DMA) as solvent, against monodisperse polystyrene standards;'}{'sup': '−1', 'sub': 'w', 'claim-text': {'br': None, 'sub': w', 'w, '0.025×M(KDalton)+13≤MV (KPoise)≤0.050×M(KDalton)+10.'}, 'wherein the relation between melt viscosity (MV) in KPoise determined at a shear rate of 100 sec, and at a temperature of 230° C., according to ASTM D3835, and M, expressed in KDalton, satisfies the following inequality21. The dispersion (D) of claim 18 , wherein polymer (A) comprises at least 0.1 moles of recurring units derived from said hydrophilic (meth)acrylic monomer (MA) and/or polymer (A) comprises at most 7.5% moles of recurring units derived from said hydrophilic (meth)acrylic monomer (MA).22. A method of making a dispersion (D) according to claim 18 , said method comprising emulsion polymerization of VDF in an aqueous medium in the presence of an inorganic initiator and an iodine-containing chain transfer agent claim 18 , wherein the molar ratio between the said iodine-containing chain transfer agent and ...

BINDER FOR COATING SECONDARY BATTERY SEPARATOR AND SECONDARY BATTERY COMPRISING SAME

The present disclosure relates to a binder for coating a secondary battery separator including a (meth)acrylic copolymer containing a first structural unit derived from (meth)acrylonitrile; a second structural unit derived from (meth)acrylic acid or (meth)acrylate; and a third structural unit derived from (acet)amides, and a separator for a secondary battery and a secondary battery including the same.

Composition for lithium ion secondary battery separator, two-part composition for lithium ion secondary battery separator, method of producing separator for lithium ion secondary battery, and method of producing lithium ion secondary battery

Provided are a composition for a lithium ion secondary battery separator containing: a liquid medium; and 40 mass % or less of a first compound including a function-displaying functional group and having a molecular weight of 50,000 or less, and having a surface tension of 15 mN/m to 30 mN/m, and a two-part composition for a lithium ion secondary battery separator including: a first liquid containing a first compound and first liquid medium; and a second liquid containing a second compound and second liquid medium, wherein the first compound includes a function-displaying functional group and has a molecular weight of 50,000 or less, the second compound is reactive with the first compound and has a molecular weight of 50,000 or less, and the first and second liquids each contain the corresponding compound in a proportion of 40 mass % or less and have a surface tension of 15 mN/m to 30 mN/m.

IONICALLY CONDUCTIVE MATERIAL FOR ELECTROCHEMICAL GENERATOR AND PRODUCTION METHODS

COATING COMPOSITION FOR SEPARATOR

One aspect of the present invention provides a coating composition for a separator including a water-soluble polymer and a water-insoluble polymer, wherein the water-insoluble polymer includes solid particles and annular hollow particles, and an electrode-adhesive separator, which includes an adhesive layer made of the coating composition.

SEPARATOR FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING SAME

The present invention relates to a separator for a secondary battery, the separator including a substrate and a coating layer formed on the surface of the substrate, wherein the coating layer includes an organic binder and inorganic particles, and the organic binder contains an ethylenically unsaturated group, and to a lithium secondary battery including the same. 2. The separator of claim 1 , wherein the ethylenically unsaturated group is at least one selected from the group consisting of a vinyl group claim 1 , an acryloxy group and a methacryloxy group.4. The separator of claim 1 , wherein the organic binder is included in an amount of 1 part by weight to 80 parts by weight based on 100 parts by weight of the coating layer.5. A lithium secondary battery comprising:a positive electrode;a negative electrode;{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the separator of ; and'}a gel polymer electrolyte disposed between the positive electrode and the negative electrode and the separator, comprising a polymer of an oligomer containing a (meth) acrylate group,wherein the separator comprises a polymer network in a three-dimensional structure of a polymer of the organic binder containing an ethylenically unsaturated group and the oligomer containing a (meth) acrylate group.6. The secondary battery of claim 5 , wherein the oligomer further contains an oxyalkylene group.7. The secondary battery of claim 5 , wherein the oligomer is represented by Formula 1 below:{'br': None, 'sub': '1', 'A-C-A′\u2003\u2003[Formula 1]'}{'sub': '1', 'wherein, in Formula 1, A and A′ are each independently a unit containing a (meth) acrylate group, and Cis a unit containing an oxyalkylene group.'}11. The secondary battery of claim 5 , wherein the gel polymer electrolyte is formed by injecting a gel polymer electrolyte composition including the oligomer into a battery case and then curing the composition. This application claims the benefit of Korean Patent Application No. 10-2018-0006795, ...

LIGHTWEIGHT NONWOVEN FIBER MATS

Nonwoven fiber mats include primarily B-glass fibers, and have a thickness of about 10 to about 700 microns and a basis weight of about 1 to 70 g/m2. The mats are generally thermally stable at temperatures of up to 650° C., and are suitable for use as battery separators.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

This non-aqueous electrolyte secondary battery, which is one example of an embodiment, comprises: a positive electrode that has a positive electrode mixture layer; a negative electrode; a separator that is interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode mixture layer contains a first lithium-and-transition-metal composite oxide represented by general formula LixNi1−y−zCoyMzO2(in the formula, 0.8≤x≤1.2, 0≤y≤0.2, 0 Подробнее

FLEXIBLE PVDF POLYMERS

SEPARATOR AND BATTERY INCLUDING SEPARATOR

Disclosed are a separator and a battery including the separator. The separator includes a separator base layer and a ceramic coating disposed on a first surface of the separator base layer. The ceramic coating includes ceramic particles. One or more of a surface and an interior of the ceramic coating have micropores. A porosity of the ceramic coating ranges from 40% to 80%. In the micropores, a volume of pores with apertures greater than 0.1 microns occupies 45%-90% of a total pore volume, and a volume of pores with apertures greater than 1.0 micron occupies 40%-80% of the total pore volume. In the present disclosure, a porosity of the separator is improved, and a rate, a residual liquid volume, low-temperature discharging performance, and cycling performance of the battery are improved. In addition, separator nail penetration strength, self-discharging performance, and safety performance are not affected.

COATING COMPOSITION, BASE MATERIAL WITH COATING FILM, SEPARATOR, SECONDARY BATTERY, LITHIUM-ION SECONDARY BATTERY, AND ELECTRODE MATERIAL

A coating composition can be applied with excellent high-speed coating properties and surface smoothness in a paint, an ink, and an adhesive which mainly contain polymers, or is a coating liquid for a positive electrode, a negative electrode, a separator, and the like of a lithium-ion secondary battery. The coating composition contains a filler, a binder, a thickener, and a solvent, wherein an aspect ratio of the filler is 2 or more, the binder is at least one selected from a diene rubber and a (meth)acrylate polymer, a viscosity of the coating composition is 1.0×106Pa·s or less as measured at a shear rate of 0.01/s, and the following thixotropy index (TI) is 1.1×106or more: [thixotropy index (TI)]=[viscosity of the coating composition as measured at a shear rate of 0.01/s]/[viscosity of the coating composition as measured at a shear rate of 10000/s].

Composite separator including porous substrate with porous layer including polyacrylic acid metal salt binder and inorganic particles, lithium battery including the same, and method of preparing the same

Provided are a composite separator, a lithium battery including the same, and a method of manufacturing the composite separator. The composite separator includes: a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a water-soluble binder and inorganic particles, and the water-soluble binder includes a polyacrylic acid metal salt.

SEPARATOR AND ELECTROCHEMICAL DEVICE

A separator and an energy-storing electrochemical device are disclosed, the separator includes a porous substrate and a first coating located on at least one surface of the porous substrate. The first coating includes a first polymer binder and first inorganic particles, and the first polymer binder comprising core-shell structured particles. The first inorganic particles are used in the first coating, ensuring that the first polymer binder has a bonding function, electrolyte transport is promoted, and the rate performance of the electrochemical device is improved.

One-step molded lithium ion battery separator, preparation method and application thereof

A one-step molded lithium ion battery separator and preparation method and application thereof are provided. The battery separator comprises a support layer and a filler layer. The support layer comprises at least two of superfine main fiber, thermoplastic bonded fiber and first nanofiber, and the filler layer comprises at least one of inorganic fillers and third nanofiber. The lithium ion battery separator has a thickness of 19-31 μm, a maximum pore diameter of no more than 1 μm, and a heat shrinkage rate of less than 3% after treatment at 300° C. for 1 hour, and the separator still has a certain strength at a high temperature, ensuring stability and isolation of the rigid structure of the filler layer at a high temperature, satisfying requirements of the separator in terms of heat resistance, pore size and strength, having excellent comprehensive performance.

Lithium ion batteries comprising nanofibers

Lithium ion batteries, electrodes, nanofibers, and methods for producing same are disclosed herein. Provided herein are batteries having (a) increased energy density; (b) decreased pulverization (structural disruption due to volume expansion during lithiation/de-lithiation processes); and/or (c) increased lifetime. In some embodiments described herein, using high throughput, water-based electrospinning process produces nanofibers of high energy capacity materials (e.g., ceramic) with nanostructures such as discrete crystal domains, mesopores, hollow cores, and the like; and such nanofibers providing reduced pulverization and increased charging rates when they are used in anodic or cathodic materials.

All-In-One Electrode Stack Unit, Manufacturing Method Thereof, and Lithium Secondary Battery Including the Same

An all-in-one electrode stack unit includes a first electrode, a second electrode, and a separation layer interposed between the first electrode and the second electrode. The separation layer is a photocured PSA coating layer integrally formed on the first electrode. The separation layer has a strength of 30 to 50 MPa and an adhesive force to the second electrode of 70 gf/20 mm to 90 gf/20 mm. The first electrode, the separation layer, and the second electrode are laminated. The electrode stack unit is manufactured by a method. A lithium secondary battery includes the electrode stack unit.

SEPARATOR FOR BATTERIES

A battery separator includes a polyolefin porous membrane; and a heat-resistant porous layer provided thereon, wherein the heat-resistant porous layer contains barium sulfate particles and an organic synthetic resin component, the barium sulfate particles contain 20% by volume or less of particles having a diameter of 0.5 μm or less and 10% by volume or less of particles having a diameter of 3.0 μm or more, the heat-resistant porous layer contains 70% by volume or more and 98% by volume or less of the barium sulfate particles when the total of the barium sulfate particles and the organic synthetic resin component is taken as 100% by volume, an average thickness of the heat-resistant porous layer is 2 μm or more and 10 μm or less, a moisture ratio of the separator is 400 ppm or less, and a content of hydrogen sulfide is 0.2×10−3mg/m2or less.

Separator, and electrochemical device and electronic device comprising same

The present application relates to a composite separator, and an electrochemical device and an electronic device comprising the same. Some embodiments of the present application provide a composite separator, comprising: a first porous substrate and a cation exchange layer, wherein the cation exchange layer comprises a second porous substrate grafted with a functional group, wherein the functional group is selected from the group consisting of an alkali-metal-sulfonic functional group, an alkali-metal-phosphoric functional group and a combination thereof. The composite separator of the present application can effectively capture the transition metal ions eluted from a cathode through the cation exchange layer, thereby reducing the deposition of the transition metal ions on an anode and the self-discharge rate of the electrochemical device. Therefore, the electrochemical stability and cycling performance of the electrochemical device are enhanced, and the safety of the electrochemical device ...

SEPARATOR FOR LEAD STORAGE BATTERY AND LEAD STORAGE BATTERY

The purpose of the present disclosure is to provide a separator for a lead storage battery and a lead storage battery using the same having excellent liquid reduction characteristics (Water Loss performance). According to the present disclosure, provided is the separator for a lead storage battery, which comprises: a substrate; and a layer laminated on at least one side of the substrate, containing a conductive material, and having cracks.

SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

A separator for a lithium secondary battery and a lithium secondary battery including the separator, including a porous polymer substrate; and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer includes first inorganic particles surface-treated with a polyphenol-containing compound, second inorganic particles surface-treated with an organic acid, and a binder polymer. The first inorganic particles have an average particle diameter of 100 nm to 700 nm, and the second inorganic particles have an average particle diameter of 30 nm to 80 nm. The separator for a lithium secondary battery uses two types of surface-treated inorganic particles having a different average particle diameter. Therefore, the inorganic particles have improved dispersibility, and the separator has high thermal safety and can prevent separation of the inorganic particles.

NANOCOMPOSITE LAYER, METHOD OF FORMING NANOCOMPOSITE LAYER AND BATTERY

A nanocomposite layer includes a carbon nanotube composite material and a lithium salt polymer composite. The carbon nanotube composite material includes a surface modified carbon nanotube with a positively charged group and a plurality of nanoparticles with a negatively charged group. The plurality of nanoparticles are attached to the surface modified carbon nanotube. The lithium salt polymer composite wraps the carbon nanotube composite material, and includes a first polymer, a second polymer, and a lithium salt.

SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY AND NON-AQUEOUS SECONDARY BATTERY

Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate, and a heat resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a heat resistant resin and barium sulfate particles, in which an average primary particle size of the barium sulfate particles contained in the heat resistant porous layer is from 0.01 μm to less than 0.30 μm, and in which a volume ratio of the barium sulfate particles in a solid content portion of the heat resistant porous layer is from 5% by volume to less than 30% by volume.

Separators with fibrous mat, lead acid batteries using the same, and methods and systems associated therewith

In at least one embodiment, a separator is provided with a fibrous mat for retaining the active material on an electrode of a lead-acid battery. New or improved mats, separators, batteries, methods, and/or systems are also disclosed, shown, claimed, and/or provided. For example, in at least one possibly preferred embodiment, a composite separator is provided with a fibrous mat for retaining the active material on an electrode of a lead-acid battery. In at least one possibly particularly preferred embodiment, a PE membrane separator is provided with at least one fibrous mat for retaining the active material on an electrode of a lead-acid battery. In accordance with at least certain embodiments, aspects and/or objects, the present invention, application, or disclosure may provide solutions, new products, improved products, new methods, and/or improved methods, and/or may address issues, needs, and/or problems of PAM shedding, NAM shedding, electrode distortion, active material shedding, active ...

SEPARATOR FOR ELECTROCHEMICAL ENERGY ACCUMULATORS AND CONVERTERS

A separator for at least one of electrochemical energy accumulators or converters includes: a porous substrate with a comb polymer, the comb polymer containing a polymer main chain along several lateral chains that are covalently bonded to the polymer main chain. At least one of the lateral chains has at least one Lewis-acid or Lewis-base functionality.

DUAL-LAYER SEPARATOR FOR BATTERIES

Battery separators, and lead-acid batteries comprising battery separators, are generally provided. In some embodiments, the battery separators described herein have one or more features that enhance their suitability for various applications (e.g., lead-acid battery applications). In one embodiment, a battery separator described herein comprises at least two phases. In some cases, each phase may have a one or more features that result in a battery separator having enhanced physical properties. For example, the dual-phase battery separator may exhibit reduced electrical and ionic resistance, enhanced acid filling capacity, reduced acid stratification, and enhanced thermal and oxidative stability compared to conventional battery separators.

SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, AND NON-AQUEOUS SECONDARY BATTERY

A separator for a non-aqueous secondary battery contains: a porous substrate and a heat-resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a resin and inorganic particles, in which (1) the resin contains a copolymer having a vinylidene fluoride unit and a hexafluoropropylene unit, a weight average molecular weight of the copolymer being from 100,000 to less than 600,000, or the resin contains a polyvinylidene fluoride type resin and an acrylic type resin, in which a mass ratio between the polyvinylidene fluoride type resin and the acrylic type resin (polyvinylidene fluoride type resin : acrylic type resin) contained in the heat-resistant porous layer is from 90:10 to 50:50; a content of the inorganic particles in the heat-resistant porous layer is from 50% by mass to 90% by mass; and the inorganic particles contain first inorganic particles having an average primary particle size of from 0.01 µm to 0.3 µm and second inorganic ...

ELECTROLYTE COMPOSITION FOR LITHIUM METAL BATTERIES

LDH SEPARATOR AND ZINC SECONDARY BATTERY

The present invention provides an LDH separator which has excellent alkali resistance, while being capable of more effectively suppressing short circuit that is caused by zinc dendrite. This LDH separator comprises a porous base material and a layered double hydroxide-like (LDH-like) compound with which pores of the porous base material are filled. The LDH-like compound is a hydroxide and/or an oxide, which has a layered crystal structure, while containing (i) Ti, Y, and if desired, Al and/or Mg and (ii) an additive element M that is composed of at least one element selected from the group consisting of In, Bi, Ca, Sr and Ba.

COATING MATERIAL FEEDSTOCK FOR SECONDARY BATTERY SEPARATOR, COATING MATERIAL FOR SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR PRODUCTION METHOD, AND SECONDARY BATTERY

This coating material feedstock for a secondary battery separator includes core-shell particles, each comprising: a core layer that includes a first polymer; and a shell layer that covers the first polymer and includes a second polymer. The first polymer has a repeating unit derived from an alkyl (meth)acrylate ester. The second polymer has 40-97 mass% of a repeating unit derived from (meth)acrylamide and 3-60 mass% of a repeating unit derived from a carboxy group-containing vinyl monomer. The ratio of the second polymer to the first polymer is 4-250.

COATING MATERIAL FEEDSTOCK FOR SECONDARY BATTERY SEPARATOR, COATING MATERIAL FOR SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR PRODUCTION METHOD, AND SECONDARY BATTERY

This coating material feedstock for a secondary battery separator includes a water-soluble polymer having a repeating unit derived from methacrylamide, and a repeating unit derived from a carboxy group-containing vinyl monomer, wherein with respect to the total amount of the water-soluble polymer, the content of the repeating unit derived from methacrylamide is 60 mass% to 97 mass% inclusive and the content of the repeating unit derived from a carboxy group-containing vinyl monomer is 3 mass% to 40 mass% inclusive, the weight-average molecular weight of the water-soluble polymer is 20,000 to 200,000 inclusive, and the glass transition temperature of the water-soluble polymer is 200°C or higher.

Separator for Lithium Secondary Battery, Method of Producing the Same, and Electrochemical Device Including the Same

Provided is a separator for a lithium secondary battery including a porous substrate and a coating layer including a binder and inorganic particles formed on one surface or both surfaces of the porous substrate. The binder is a binder including: (a) a (meth)acrylamide-based monomer polymerization unit, (b) a (meth)acryl-based monomer polymerization unit containing a hydroxyl group, and (c) a polyfunctional (meth)acrylamide-based monomer polymerization unit. The separator according to the present invention provides a separator for a lithium secondary battery having improved adhesive strength between the inorganic particles and the separator, showing a decreased interfacial resistance characteristic, and showing an improved air permeability.

COATING COMPOSITION AND BASE MATERIAL WITH COATING FILM

Provided is a composition capable of forming an easy-drying coating on an application surface in a paint, an ink, and an adhesive which mainly contain polymers, or a coating liquid for a positive electrode, a negative electrode, a separator, and the like of a lithium-ion secondary battery. The coating composition containing a filler, a binder, a thickener, and a solvent, wherein the binder is at least one selected from a diene rubber and a (meth)acrylate polymer; a viscosity of the coating composition is 1.0×106Pa·s or less as measured at a shear rate of 0.01/s; and the following thixotropy index (TI) is 1.1×106or more: [thixotropy index (TI)]=[viscosity of the coating composition as measured at a shear rate of 0.01/s]/[viscosity of the coating composition as measured at a shear rate of 10000/s].

POLYMER COMPOSITE FILM AND PREPARATION METHOD THEREFOR AND LITHIUM ION BATTERY COMPRISING THE POLYMER COMPOSITE FILM

SEPARATOR FOR ELECTROCHEMICAL DEVICE AND ELECTROCHEMICAL DEVICE COMPRISING SAME

A separator for an electrochemical device includes a first porous coating layer on a first surface of a porous polymer substrate. The first porous coating layer includes inorganic particles and a first binder polymer, and the first porous coating layer has an interstitial volume pore structure. The separator also includes a second porous coating layer on a second surface of the porous polymer substrate. The second porous coating layer includes second inorganic particles and a second binder polymer. The second porous coating layer having a node-filament pore structure. The separator also includes an electrode adhesion layer on a surface of the first porous coating layer opposite to the porous separator substrate. The electrode adhesion layer includes a third binder polymer. The separator for an electrochemical device has high heat resistance and improved adhesive property with electrode. An electrochemical device having the separator is also provided.

IMPROVED SEPARATOR MEMBRANES FOR LITHIUM-ION BATTERIES AND RELATED METHODS

A ceramic-coated battery separator having a microporous polyolefin membrane and a ceramic coating on at least one surface of the microporous polyolefin membrane, wherein the ceramic-coated separator exhibits a strain shrinkage of 0% at temperatures greater than or equal to 120 degrees Celsius is provided.

LITHIUM ION CONDUCTING PROTECTIVE FILM AND METHOD OF USE

A lithium ion conducting protective film produced using a layer-by-layer assembly process. The lithium ion conducting protective film is assembled on a substrate by a sequential exposure of the substrate to a first poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the first side of the substrate, a graphene oxide (GO) layer on the first PEO layer, a second poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the GO layer and a poly(acrylic acid) (PAA) layer on the second PEO layer. The film functions as a lithium ion conducting protective film that isolates the lithium anode from the positive electrochemistry of the cathode in a lithium-air battery, thereby preventing undesirable lithium dendrite growth.

Separator and energy storage device

A separator includes: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.

COATING LIQUID COMPOSITION, SUBSTRATE WITH COATING FILM, SEPARATOR, SECONDARY BATTERY, AND ELECTRODE MATERIAL

Provided is a composition that can form a coating film having excellent surface smoothness and high heat deformation resistance in a coating liquid for a paint mainly containing a polymer, an ink, an adhesive, and an anode, a cathode, or a separator of a lithium ion battery, for example. A coating liquid composition includes a filler, a solvent, a dispersant, and a thickener. When the coating liquid composition is applied to a substrate to form a coating film having a thickness of 0.5 to 20 μm, the coating film has a shrinkage rate of 15.0% or less after heating at 170° C. for 15 minutes.

NONAQUEOUS SECONDARY BATTERY

A nonaqueous secondary battery which is provided with: a positive electrode; a negative electrode; an insulating layer that is a single layer having one surface in contact with the positive electrode and having the other surface in contact with the negative electrode; and an electrolyte solution. With respect to this nonaqueous secondary battery, (1) the insulating layer contains a polyvinylidene fluoride resin and inorganic particles; the weight average molecular weight of the polyvinylidene fluoride resin contained in the insulating layer is from 900,000 to 1,500,000; and the mass proportion of the inorganic particles in the insulating layer is not less than 50% by mass but less than 90% by mass, (2) the insulating layer contains a resin and inorganic particles; the thickness of the insulating layer is from 5 μm to 30 μm; and the inorganic particles contain metal sulfate particles, or (3) the insulating layer contains inorganic particles and a polyvinylidene fluoride resin that contains ...

Lithium secondary battery separator including adhesive layer

A coating composition including a solvent, inorganic particles, a dispersant, and a binder, wherein the binder includes a binder B and a binder A, both the binder B and the binder A include a VDF unit and a HFP unit, binder B includes 8 to 50 wt % of the HFP-derived unit, and binder A includes 5 wt % or more of the HFP-derived unit under a condition that a proportion of the HFP-derived unit in the binder A is 80% or less of a proportion of the HFP-derived unit in the binder B, the binder B has a total number average molecular weight of 200,000 to 2,000,000 Da, and the binder A has a total number average molecular weight corresponding to 70% or less of that of the binder B, and a weight ratio of the binder A:the binder B in the coating composition is 0.1 to 10:1. The coating composition is suitable for use in coating at least one surface of a porous substrate having a plurality of pores.

SEPARATOR FOR LITHIUM SECONDARY BATTERY, METHOD OF PRODUCING THE SAME, AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME

Provided is a separator for a lithium secondary battery including a porous substrate and a coating layer including a binder and inorganic particles formed on one surface or both surfaces of the porous substrate, wherein the binder is a binder including: (a) a (meth)acrylamide-based monomer polymerization unit, (b) a (meth)acryl-based monomer polymerization unit containing a hydroxyl group, and (c) a polyfunctional (meth)acrylamide-based monomer polymerization unit. The separator according to the present invention provides a separator for a lithium secondary battery having improved adhesive strength between the inorganic particles and the separator, showing a decreased interfacial resistance characteristic, and showing an improved air permeability.

COATED NON-WOVEN LITHIUM ION BATTERY SEPARATORS WITH HIGH TEMPERATURE RESISTANCE

LEAD STORAGE BATTERY

Provided is a lead storage battery provided with a positive electrode, a negative electrode, an electrolytic solution, a separator interposed between the positive electrode and the negative electrode, and non-woven fabric. The non-woven fabric includes fibers and a filler, and is disposed between the positive electrode and the separator. The separator is provided with a rib formed in a protruding shape from a base portion on the positive electrode side. The relation T/R, which is between the thickness T of the non-woven fabric and the height R from the base portion of the separator taken as a starting point to the top of the rib, is 0.10-11.

SEPARATOR, PREPARATION METHOD THEREOF, AND SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC APPARATUS

Provided a separator, a preparation method thereof, and a secondary battery, a battery module, a battery pack, and an electric apparatus containing such separator. The separator includes: a substrate and a coating applied on at least one surface of the substrate, where the coating includes 40 wt % to 90 wt % first organic particles, 2 wt % to 15 wt % pressure-sensitive binder, and optionally 0 wt % to 50 wt % second organic particles. The first organic particles include an organic polymer and an inorganic substance. The pressure-sensitive binder includes an organic polymer and a plasticizer. The separator has good ionic conductivity and adhesion performance at room temperature, is not adhered under a pressure of 1 MPa or below and is significantly adhered under a pressure of 2 MPa or above, which can significantly improve structural stability and ionic conductivity of an electrochemical device while satisfying requirements for yield rate of production and kinetic performance of a battery ...

COMPOSITE POROUS SEPARATOR, MANUFACTURING METHOD THEREOF AND ELECTROCHEMICAL DEVICE USING THE SAME

The present invention relates to a composite porous separator, a method of manufacturing the same, and an electrochemical device including the same. Provided is a porous substrate that has excellent heat resistance and heat shrinking properties, a small thickness, and high strength even when a thickness of a coating layer containing inorganic particles is small. Provided are a composite porous separator having significantly reduced heat shrinking and curls according to the present invention, and an electrochemical device using the same.

LITHIUM ION SECONDARY BATTERY AND SEPARATION MEMBRANE

An aspect of the present invention provides a lithium ion secondary battery comprising: a positive electrode mixture layer; a separation membrane; and a negative electrode mixture layer, in this order, wherein the positive electrode mixture layer comprises a positive electrode active material, a first lithium salt, and a first solvent, wherein the negative electrode mixture layer comprises a negative electrode active material, a second lithium salt, and a second solvent, and wherein the separation membrane comprises at least one resin selected from the group consisting of a resin comprising, as a monomer unit, at least one monomer having (meth)acryloyl group, and a resin comprising, as a monomer unit, at least one olefin comprising fluorine.

Electrochemical device

An electrochemical device includes a cathode, an anode and a separator, the separator being disposed between the cathode and the anode, the separator including a porous substrate and a porous layer, and the porous layer being disposed on a surface of the porous substrate and including inorganic particles and a binder, where a ratio of a puncture elongation of the porous substrate to a puncture force of the porous substrate is about 1.5 mm/N to about 25 mm/N. A lithium-ion battery including the separator, provided by the present application, improves the safety performance of the lithium-ion battery.

POROUS STRUCTURE, INSULATING LAYER, ELECTRODE, POWER STORAGE ELEMENT, METHOD FOR MANUFACTURING POROUS STRUCTURE, APPARATUS FOR MANUFACTURING POROUS STRUCTURE, CARRIER, SEPARATION LAYER, AND REACTION LAYER

A porous structure (200) having pores communicating with each other is provided. The porous structure (200) includes a porous structure portion A (201) comprising a resin A and a porous structure portion B (203) comprising a resin B. The porous structure portion A (201) and the porous structure portion B (203) are continuously integrated, and the resin A and the resin B are composed of different constituents.

Acid stratification mitigation, electrolytes, devices, and methods related thereto

Methods of reducing acid stratification with an acid-soluble and acid-stable polymer with a high molecular weight are disclosed herein. Electrolytes and separators for an energy storage device are disclosed herein. The separator includes a coating containing an acid-soluble and acid-stable polymer with a high molecular weight. The electrolyte includes sulfuric acid and an acid-soluble and acid-stable polymer with a high molecular weight. Methods of making the separators disclosed herein and methods of making batteries are also disclosed herein.

COMPOSITE SEPARATOR AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME

Provided are a composite separator including a coating layer including inorganic particles and a binder formed on a porous substrate, which has improved coatability and improved thermal shrinkage, and a lithium secondary battery using the same.

ENERGY STORAGE DEVICE

The disclosure provides an energy storage device, comprising: an anode; a cathode; a separator, which is located between the anode and the cathode; an electrolyte, which is disposed between the anode and the cathode, and cladded on the separator; wherein, the separator is a fibrous membrane composed of polyacrylonitrile, and a surface of the fibrous membrane is modified by an acidic functional group or a salt thereof. The energy storage device of the disclosure can be applied to the technical field of lithium batteries.

Separator and energy storage device

A separator includes: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.

COATING MATERIAL FEEDSTOCK FOR SECONDARY BATTERY SEPARATOR, COATING MATERIAL FOR SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR, SECONDARY BATTERY SEPARATOR PRODUCTION METHOD, AND SECONDARY BATTERY

In an ingredient for a secondary cell separator coating material including a core shell particle including a core layer containing a first polymer and a shell layer covering the first polymer and including a second polymer, the first polymer has a repeating unit derived from alkyl (meth)acrylate; the second polymer has a repeating unit derived from (meth)acrylamide of 40 to 97% by mass, and a repeating unit derived from a carboxy group-containing vinyl monomer of 3 to 60% by mass; and a ratio of the second polymer to the first polymer is 4 to 250.

COATED SEPARATOR WITH HIGH HEAT RESISTANCE AND HIGH PEEL STRENGTH AND PREPARATION METHOD THEREOF

LDH SEPARATOR AND ZINC SECONDARY BATTERY

The present invention provides an LDH separator which has excellent alkali resistance, while being capable of more effectively suppressing short circuit that is caused by zinc dendrite. This LDH separator comprises: a porous base material; and a mixture of a layered double hydroxide-like (LDH-like) compound and In(OH)3, said mixture filling up pores of the porous base material. The LDH-like compound is a hydroxide and/or an oxide, which has a layered crystal structure, while containing Mg, Ti, Y, and if desired, Al and/or In.

ION CONDUCTIVE LAYER FOR ELECTRICITY STORAGE DEVICES

One embodiment of the present disclosure provides an ion conductive layer for electricity storage devices, said ion conductive layer being capable of improving the battery characteristics of electricity storage devices. One embodiment of the present disclosure relates to an ion conductive layer for electricity storage devices, said ion conductive layer being arranged between the positive electrode and the negative electrode of an electricity storage device. This ion conductive layer for electricity storage devices contains an acrylic polymer; the acrylic polymer contains a constituent unit (A) that is derived from a compound represented by formula (I); the content of the constituent unit (A) in all constituent units of the acrylic polymer is from 88% by mass to 100% by mass; and the thickness of this ion conductive layer is more than 1 μm but not more than 500 μm.

COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY ADHESIVE LAYER, ADHESIVE LAYER FOR NON-AQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME, LAMINATE FOR NON-AQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS SECONDARY BATTERY

Disclosed is a composition for a non-aqueous secondary battery adhesive layer which comprises a particulate polymer, wherein a value of pressure sensitivity of adhesion strength as obtained using the following formula (1) is greater than 20 and less than 80: pressure sensitivity of adhesion strength (N/(m·MPa))=(T3−T1)/2 . . . (1), where T1 represents an adhesion strength (N/m) between a polyethylene separator and an adhesive layer for a non-aqueous secondary battery adhesive layer that is obtained from the composition for a non-aqueous secondary battery adhesive layer when the polyethylene separator and the adhesive layer are bonded by pressing at 25° C. and a pressure of 1 MPa for 10 seconds, and T3 represents an adhesion strength (N/m) between the polyethylene separator and the adhesive layer when the polyethylene separator and the adhesive layer are bonded by pressing at 25° C. and a pressure of 3 MPa for 10 seconds.

ZEOLITE-BASED COMPOSITE SEPARATOR FOR A LITHIUM-ION SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

COATING COMPOSITION, SUBSTRATE HAVING COATING FILM, SEPARATOR, SECONDARY BATTERY, LITHIUM ION SECONDARY BATTERY, AND ELECTRODE MATERIAL

... [Problem] To provide a coating composition which enables coating having excellent high speed coatability and surface smoothness, when the coating composition is used in a coating liquid for: a coating material containing mainly a polymer; an ink; an adhesive; a positive electrode, a negative electrode or a separator of lithium ion battery; or the like. [Solution] This coating composition contains a filler, a binder, a thickening agent and a solvent, and is characterized in that the aspect ratio of the filler is 2 or more, the binder is at least one type selected from among a diene rubber and a (meth)acrylate polymer, the viscosity of the coating composition, as measured at a shear rate of 0.01/s, is 1.0×106 Pa·s or less, and the thixotropy index (TI) is 1.1×106 or more. [thixotropy index (TI)] = [viscosity of coating composition measured at a shear rate of 0.01 /s]/[viscosity of coating composition measured at a shear rate of 10,000 /s].

Bipolar Battery and Method of Manufacturing the Same

A bipolar battery includes a plurality of cell members, each including a positive electrode having a positive active material layer, a negative electrode having a negative active material layer, and an electrolyte layer interposed between the positive electrode and the negative electrode. The bipolar battery also includes a plurality of frame units respectively forming a plurality of cells respectively incorporating the plurality of cell members. Each of the plurality of frame units is a frame unit made of a light transmissive resin material. Two of the frame units made of the light transmissive resin material adjacent in a stacking direction of the cell members are welded and joined at a welded portion via a joining member made of a light absorbing resin material. This configuration can provide a bipolar battery capable of reliably preventing electrolytic solution leakage out of a cell by means of a simple seal structure.

SEPARATOR FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

SEPARATOR FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including the same. The separator includes a porous substrate, and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a binder including a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, and a second structural unit including at least one of a structural unit derived from (meth)acrylic acid or (meth)acrylate, and a structural unit derived from (meth)acrylamidosulfonic acid or a salt thereof; first inorganic particles; and second inorganic particles, wherein the first inorganic particles have an average particle diameter of 400 to 600 nm, the average particle diameter of the second inorganic particles is smaller than the average particle diameter of the first inorganic particles.

SEPARATOR FOR ELECTROCHEMICAL DEVICE AND METHOD FOR MANUFACTURING THE SAME

A separator including a porous polymer substrate and an inorganic coating layer formed on at least one surface of the porous polymer substrate. The inorganic coating layer includes inorganic particles and a binder resin. The binder resin includes a first binder resin and a second binder resin. The first binder resin comprises a polyvinylidene fluoride (PVdF)-based polymer and the second binder resin comprises an acrylic polymer. The acrylic polymer has an acid value of 1 or less and a glass transition temperature, Tg, of 90° C. to 130° C. In addition, the inorganic coating layer has a high content of binder resin at the top layer portion to provide excellent adhesion between the separator and an electrode.

LITHIUM ION SECONDARY BATTERY AND SEPARATION MEMBRANE

One aspect of the present invention provides a lithium ion secondary battery which sequentially comprises a positive electrode mixture layer, a separation membrane, and a negative electrode mixture layer in the stated order, wherein: the positive electrode mixture layer contains a positive electrode active material, a first lithium salt, and a first solvent; the negative electrode mixture layer contains a negative electrode active material, a second lithium salt, and a second solvent that is different from the first solvent; and the separation membrane contains a third lithium salt and a polymer that comprises, as a monomer unit, a monomer represented by formula (1). [wherein, in formula (1), R1represents a hydrogen atom or a methyl group, R2represents a divalent organic group, R3, R4and R5each independently represents a hydrogen atom or a monovalent organic group, and X− represents a counter anion.] ...

COMPOSITE SEPARATOR, LITHIUM BATTERY INCLUDING THE SAME, AND METHOD OF PREPARING THE COMPOSITE SEPARATOR

Provided are a composite separator, a lithium battery including the same, and a method of manufacturing the composite separator. The composite separator includes: a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a water-soluble binder and inorganic particles, and the water-soluble binder includes a polyacrylic acid metal salt.

COMPOSITION FOR ELECTROCHEMICAL ELEMENT FUNCTIONAL LAYER, FUNCTIONAL LAYER FOR ELECTROCHEMICAL ELEMENT, LAMINATE FOR ELECTROCHEMICAL ELEMENT, AND ELECTROCHEMICAL ELEMENT

A composition for an electrochemical device functional layer contains a binder, heat-resistant fine particles, and a particulate polymer that has a volume-average particle diameter of more than 1.0 µm and not more than 10.0 µm and that includes a polymer A including a (meth)acrylic acid ester monomer unit and an acidic group-containing monomer unit and a polymer B that is a different polymer from the polymer A.

POROUS FILM, SEPARATOR FOR SECONDARY BATTERY, AND SECONDARY BATTERY

The present invention provides, inexpensively, a porous film that has superior thermal dimensional stability, adhesiveness to electrodes, and battery properties. This porous film has a porous substrate and a porous layer that contains particles A on at least one surface of the porous substrate. The particles A have a mixture containing a polymer that comprises fluorine-containing (meth)acrylate monomers and a polymer that comprises monomers having two or more reactive groups per molecule, or have a copolymer containing fluorine-containing (meth)acrylate monomers and monomers that have two or more reactive groups per molecule. The monomers having two or more reactive groups per molecule are contained in the particles A in an amount ranging from greater than 10 wt% to not more than 30 wt%, where all constituent components of the particles A are assumed to constitute 100 wt%.

IMPROVED ADHESIVE COATING, COATED MEMBRANES, COATED BATTERY SEPARATORS, AND RELATED METHODS

A heat-resistant sticky coating for use on a membrane or lithium ion battery separator is disclosed. The coating has at least improved dry adhesion to an electrode for a lithium ion battery. The coating includes heat-resistant particles with a water-soluble sticky polymer on their surface. The water-soluble sticky polymer may be a polyethylene oxide (PEO). The coating may also include particles of water-insoluble sticky polymer. The water-insoluble sticky polymer may be a polyvinylidene fluoride (PVDF) homopolymer, copolymer, or terpolymer. The water-insoluble sticky polymer may be in the same layer of the coating as the heat-resistant particles with the water-soluble sticky polymer on their surface, or it may be in a different layer. A method for forming the heat-resistant sticky coating is also disclosed.

AQUEOUS RESIN COMPOSITION FOR BINDER FOR LITHIUM ION SECONDARY BATTERY SEPARATOR HEAT-RESISTANT LAYERS

The present invention provides an aqueous resin composition for a binder for lithium ion secondary battery separator heat-resistant layers, said aqueous resin composition containing a radical polymer (A) which uses, as essential starting materials, an acrylic monomer (a1) having an alkyl group with 4 to 18 carbon atoms, at least one monomer (a2) that is selected from among diacetone (meth)acrylamides and N-methylol (meth)acrylamides, an unsaturated monomer (a3) having a carboxyl group, and acrylonitrile (a4), and an aqueous medium (B), while being characterized in that the amount of the acrylonitrile (a4) in the monomer starting materials of the radical polymer (A) is from 5% by mass to 35% by mass. A heat-resistant layer formed from this aqueous resin composition exhibits excellent thermal shrinkage resistance, and is therefore suitable for use as a lithium ion secondary battery separator heat-resistant layer.

Composite Porous Separator, Manufacturing Method Thereof and Electrochemical Device Using the Same

The present invention relates to a composite porous separator, a method of manufacturing the same, and an electrochemical device including the same. Provided is a porous substrate that has excellent heat resistance and heat shrinking properties, a small thickness, and high strength even when a thickness of a coating layer containing inorganic particles is small. Provided are a composite porous separator having significantly reduced heat shrinking and curls according to the present invention, and an electrochemical device using the same.

SEPARATOR AND ELECTROCHEMICAL DEVICE COMPRISING SAME

A separator and an electrochemical device comprising same are provided. The separator includes a porous polymer substrate having a plurality of pores; a first porous coating layer on one surface of the porous polymer substrate; and a second porous coating layer on the other surface of the porous polymer substrate. The first porous coating layer includes a plurality of first inorganic particles and first binder particles on a part or all of the surface of the first inorganic particles to connect and fix the first inorganic particles. The second porous coating layer includes a plurality of second inorganic particles and second binder particles on a part or all of the surface of the second inorganic particles to connect and fix the second inorganic particles. The average particle diameter of the second binder particles is at least 10-fold larger than the average particle diameter of the first binder particles.

NONAQUEOUS SECONDARY BATTERY

A non-aqueous secondary battery, containing a positive electrode, a negative electrode, an insulating layer that is a single layer contacting the positive electrode on one side and contacting the negative electrode on another side, and an electrolyte, in which (1) the insulating layer includes a polyvinylidene fluoride type resin and inorganic particles, a weight-average molecular weight of the polyvinylidene fluoride type resin contained in the insulating layer is from 900,000 to 1,500,000, and a content ratio of the inorganic particles in the insulating layer is from 50% by mass to less than 90% by mass; (2) the insulating layer includes a resin and inorganic particles, a thickness of the insulating layer is from 5 µm to 30 µm, and the inorganic particles include metal sulfate particles; or (3) the insulating layer includes a polyvinylidene fluoride type resin and inorganic particles, the polyvinylidene fluoride type resin contains, as polymerizing components, vinylidene fluoride and ...

COMPOSITE SINGLE-LAYER CHEMICALLY CROSS-LINKED SEPARATOR

The purpose of the present disclosure is to provide: a separator for a power storage device having greater safety; and a power storage device or the like employing said separator. The separator for a power storage device has a substrate containing polyolefin and a single or plurality of layers formed thereon. The polyolefin contained in the substrate has one or more types of functional groups that form a cross-linked structure in the power storage device. In an embodiment, the layers include a layer containing inorganic particles and a layer containing a thermoplastic polymer. In another embodiment, the layers include a surface layer such as a thermoplastic-polymer-containing layer, an active layer, or a heat-resistant porous layer.

POROUS FILM, SEPARATOR FOR SECONDARY BATTERY, AND SECONDARY BATTERY

The present invention provides, inexpensively, a porous film that has superior thermal dimensional stability, adhesiveness to electrodes, and battery properties. This porous film has a porous substrate and, on at least one surface of the porous substrate, porousness that contains particles A. The particles A have a mixture containing a polymer that includes fluorine-containing (meth)acrylate monomers and a polymer that includes monomers having two or more reactive groups per molecule, or the particles A have a copolymer containing fluorine-containing (meth)acrylate monomers and monomers that have two or more reactive groups per molecule. The monomers having two or more reactive groups per molecule are contained in the particles A in an amount ranging from greater than 10% by mass to not more than 30% by mass, where all components of the particles A are assumed to constitute 100% by mass.

SEPARATOR AND PREPARATION METHOD THEREFOR, BATTERY, AND ELECTRIC APPARATUS

A separator includes a substrate and a coating. The coating is formed on at least a portion of surface of the substrate. The coating includes composite particles and a binder. The composite particles form bulges on surface of the coating. The composite particles include polyacrylate particles and first inorganic particles. The first inorganic particle is present between at least two of the polyacrylate particles.

HEAT-SENSITIVE LAYER FOR LITHIUM ION SECONDARY BATTERY

SEPARATOR AND ELECTROCHEMICAL DEVICE HAVING THE SAME

Disclosed is a separator for an electrochemical device. The separator has good bondability to electrodes and prevents inorganic particles from detaching during an assembling process of an electrochemical device.

ALUMINUM BATTERY SEPARATOR

An aluminum battery separator (10) applied between a positive electrode (102, 104) and a negative electrode (104) of an aluminum battery (100) includes a polymer material layer. An electrolyte is included between the positive electrode (102, 104) and the negative electrode (104) of the aluminum battery (100). The polymer material layer includes one or more polymer materials, and the aluminum battery separator (10) does not include a glass fiber material.

Lithium ion conducting protective film and method of use

A lithium ion conducting protective film is produced using a layer-by-layer assembly process. The lithium ion conducting protective film is assembled on a substrate by a sequential exposure of the substrate to a first poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the first side of the substrate, a graphene oxide (GO) layer on the first PEO layer, a second poly(ethylene oxide) (PEO) layer including a cross-linking silane component on the GO layer and a poly(acrylic acid) (PAA) layer on the second PEO layer. The film functions as a lithium ion conducting protective film that isolates the lithium anode from the positive electrochemistry of the cathode in a lithium-air battery, thereby preventing undesirable lithium dendrite growth.

SEPARATOR FOR ELECTROCHEMICAL DEVICE AND PRODUCTION METHOD THEREFOR

A separator for an electrochemical device including a porous separator substrate including a polymer material, and a porous coating layer coated on at least one surface of the porous separator substrate. The porous coating layer includes inorganic particles and a binder resin. The binder resin includes a mixture of polyvinyl acetate (PVAc) with an acrylic binder resin. The separator has improved wettability with an electrolyte by virtue of relatively high polarity of PVAc. In addition, it is possible to improve the peel force between the separator substrate and the porous coating layer by introducing PVAc and to reduce the thickness of the porous coating layer. Therefore, when introducing the separator to a battery, it is possible to improve the resistance characteristics, and to inhibit the porous coating layer from being spaced apart from the separator substrate or to inhibit the inorganic particles from being detached from the porous coating layer.

METHOD OF FORMING AN ANODE STRUCTURE WITH DIELECTRIC COATING

The present disclosure generally relate to separators, high performance electrochemical devices, such as, batteries and capacitors, including the aforementioned separators, and methods for fabricating the same. In one implementation, a separator for a battery is provided. The separator comprises a substrate capable of conducting ions and at least one dielectric layer capable of conducting ions. The at least one dielectric layer at least partially covers the substrate and has a thickness of 1 nanometer to 2,000 nanometers.

Separators, batteries, systems, and methods for idle start stop vehicles

In accordance with at least selected embodiments or aspects, the present invention is directed to improved, unique, and/or high performance ISS lead acid battery separators, such as improved ISS flooded lead acid battery separators, ISS batteries including such separators, methods of production, and/or methods of use. The preferred ISS separator may include negative cross ribs and/or PIMS minerals. In accordance with more particular embodiments or examples, a 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.

Secondary battery

Disclosed are a secondary battery including an electrode assembly which includes a first electrode plate and a second electrode plate arranged as a stack, and a separator interposed between the first electrode plate and the second electrode plate, the first electrode plate including a first active material coating part formed by coating a base with a first active material and a first non-coating part, the second electrode plate including the second active material coating part formed by coating a base with a second active material and a second non-coating part, and the first non-coating part including an insulating member in a portion corresponding to the second electrode plate.

Battery

An exemplary battery is provided in the present invention. The battery includes a current collector, a positive-electrode structure, a separation structure, a negative-electrode structure and a housing. The positive-electrode structure, the separation structure, the negative-electrode structure are encircled in sequence inside of the housing. At least one of the negative-electrode structure and the positive-electrode structure comprises chlorophyll. The battery of the present invention could store hydrogen by the chlorophyll of the positive-electrode structure and/or the negative-electrode structure to generate electricity.

Porous membrane for secondary battery and secondary battery

Disclosed is a porous membrane for a secondary battery, which has further improved output characteristics and long-term cycle characteristics when compared with conventional porous membranes. The porous membrane for a secondary battery is used for a lithium ion secondary battery or the like. Specifically disclosed is a porous membrane for a secondary battery, which contains polymer particles A that have a number average particle diameter of 0.4 μm or more but less than 10 μm and a glass transition temperature of 65° C. or more and polymer particles B that have a number average particle diameter of 0.04 μm or more but less than 0.3 μm and a glass transition temperature of 15° C. or less. It is preferable that the polymer particles B have a crystallization degree of 40% or less and a main chain structure that is composed of a saturated structure.

Heat-resistant and high-tenacity ultrafine fibrous separation layer, method for manufacturing same, and secondary cell using same

Provided is an ultrafine fibrous porous separator with heat resistance and high-strength and a manufacturing method thereof, which enables mass-production of a heat-resistant and high-strength ultrafine fibrous separator by using an air-electrospinning (AES) method, and to a secondary battery using the same. The method of manufacturing a heat-resistant and high-strength ultrafine fibrous porous separator includes the steps of: air-electrospinning a mixed solution of 50 to 70 wt % of a heat-resistant, polymer material and 30 to 50 wt % of a swelling polymer material, to thereby form a porous web of a heat-resistant ultrafine fiber in which the heat-resistant polymer material and the swelling polymer material are consolidated in an ultrafine fibrous form; performing drying to control a solvent and moisture that remain on the surface of the porous web; and performing thermal compression on the dried porous web at a temperature of between 170° C. and 210° C. so as to obtain the separator.

Sheet-like fiber structure, and battery, heat insulation material, waterproof sheet, scaffold for cell culture, and holding material each using the sheet-like fiber structure

A sheet-like fiber structure including a plurality of fibers made of amorphous silicon dioxide. The plurality of fibers are intertwined with each other and thus connected to each other, thereby forming void portions. Consequently, the sheet-like fiber structure has not only liquid permeability and voltage resistance but also high heat resistance and chemical resistance. The sheet-like fiber structure is therefore applicable to a separator for preventing a short circuit between electrodes, a scaffold for cell culture, to holding a biomolecule, or the like.

Battery components with leachable metal ions and uses thereof

The disclosure describes compositions and methods for producing a change in the voltage at which hydrogen gas is produced in a lead acid battery. The compositions and methods relate to producing a concentration of one or more metal ions in the lead acid battery electrolyte.

Electricity supply element and ceramic separator thereof

An electricity supply element and the ceramic separator thereof are provided. The ceramic separator is adapted to separate two electrode layers of the electricity supply element for permitting ion migration and electrical separation. The ceramic separator is made of ceramic particulates and the adhesive. The adhesive employs dual binder system, which includes linear polymer and cross-linking polymer. The adhesion and heat tolerance are enhanced by the characteristic of the two type of polymers. The respective position of the two electrode layers are maintained during high operation temperature to improve the stability, and battery performance. Also, the ceramic separator enhances the ion conductivity and reduces the possibility of the micro-short to increase practical utilization.

Porous membrane for secondary battery, production method therefor, and use thereof

A porous membrane for a secondary battery including non-electroconductive particles and a binder for a porous membrane, wherein the non-electroconductive particles are particles of a polymer, an arithmetic mean value of a shape factor of the non-electroconductive particles is 1.05 to 1.60, a variation coefficient of the shape factor is 16% or less, and a variation coefficient of a particle diameter of the non-electroconductive particles is 26% or less; manufacturing method thereof; and an electrode, a separator and a battery having the same.

Separator for non-aqueous electrolyte battery, and non-aqueous electrolyte battery

The present invention provides a separator for a non-aqueous electrolyte battery that includes a porous base material including a polyolefin and a heat-resistant porous layer provided on at least one surface of the porous base material and including a heat-resistant resin, in which when a thermomechanical analysis measurement has been performed by applying a constant load, the separator for a non-aqueous electrolyte battery satisfies the following conditions (i) and (ii): (i) at least one shrinkage peak appears in a temperature range of from 130 to 155° C. in a displacement waveform representing shrinkage displacement with respect to temperature; and (ii) an extension rate in a range from a shrinkage peak appearance temperature T 1 to (T 1 +20)° C. is less than 0.5%/° C.

Slurry for secondary battery porous membranes, secondary battery porous membrane, secondary battery electrode, secondary battery separator, secondary battery, and method for producing secondary battery porous membrane

To provide a secondary battery porous membrane which is produced using a slurry for secondary battery porous membranes having excellent coatability and excellent dispersibility of insulating inorganic particles and is capable of improving the cycle characteristics of a secondary battery that is obtained using the secondary battery porous membrane, said secondary battery porous membrane having high flexibility and low water content and being capable of preventing particle fall-off. [Solution] A slurry for secondary battery porous membranes of the present invention is characterized by containing: insulating inorganic particles, each of which has a surface functional group that is selected from the group consisting of an amino group, an epoxy group; a mercapto group and an isocyanate group; a binder which has a reactive group that is crosslinkable with the surface functional group; and a solvent.

Bipolar ion exchange membranes for batteries and other electrochemical devices

A bipolar ion exchange membrane suitable for use in ZnBr batteries, LiBr batteries, and electrolyzers. The membrane is produced by hot pressing or extruding a mixture of an anion exchange ionomer powder, a cation exchange ionomer powder, and a non-porous polymer powder.

Microporous Polyolefin Composite Film Having Excellent Heat Resistance and Thermal Stability and Method for Manufacturing the Same

The following disclosure relates to a microporous polyolefin composite film having excellent heat resistance and thermal stability, and a method for manufacturing the same. More particularly, the present invention relates to a microporous polyolefin composite film capable of improving stability and reliability of a battery by heat sealing an edge of a microporous film provided with a coating layer that includes a polymer binder and inorganic particles, and a method for manufacturing the same.

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.

Separator for lithium secondary battery, and lithium secondary battery comprising same

Provided are a separator for a lithium secondary battery including a substrate and a heat-resistance porous layer disposed on at least one surface of the substrate and including a cross-linked binder, wherein the cross-linked binder has a cross-linking structure of a compound represented by Chemical Formula 2, and a lithium secondary battery including the same.

Composite separator for secondary battery

Provided are a composite separator and an electrochemical device using the same. More specifically, provided is a composite separator including a coating layer for improving an adhesive property between an electrode and a separator.

Separator for lithium secondary battery and lithium secondary battery comprising same

The present invention relates to a separator for a lithium secondary battery and a lithium secondary battery including same, the separator including: a porous substrate; and a coating layer on at least one surface of the porous substrate. The coating layer includes a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, a second structural unit derived from (meth)acrylonitrile, and a third structural unit derived from (meth)acrylamido sulfonic acid, (meth)acrylamido sulfonic acid salt, or a combination thereof. The first structural unit is included in an amount of 55 mol % to 90 mol % based on 100 mol % of the (meth)acrylic copolymer and the second structural unit and third structural unit are each independently included in 5 mol % to 40 mol % based on 100 mol % of the (meth)acrylic copolymer. The (meth)acrylic copolymer has a weight average molecular weight of 200,000 to 700,000.

CONDUCTIVE POLYMER ELECTROLYTE FOR BATTERIES

The present invention relates to a solid polymer electrolyte in the form of an organic-organic composite material, intended to be used in a lithium-polymer battery. The invention also relates to a process for manufacturing such an electrolyte. This electrolyte is notably intended for making a lithium-polymer battery or an “all-solid” battery, notably as regards the ion-conducting separator. The invention thus also relates to a battery separator comprising such a polymer electrolyte, to processes for manufacturing same and to the battery incorporating this electrolyte. 1. A solid polymer electrolyte for a battery operating at a temperature below 60° C. , said electrolyte comprising:a thermoplastic polymer in the form of a porous film, said polymer having a molecular mass of greater than 50,000 g/mol,an oligomer impregnating said thermoplastic polymer film, this oligomer being an ion conductor, andone or more lithium salts.2. The solid polymer electrolyte as claimed in claim 1 , in which the thermoplastic polymer is a compound of general formula: —[(CRR—CRR)—]in which R claim 1 , R claim 1 , Rand Rare independently H claim 1 , F claim 1 , CH claim 1 , Cl claim 1 , Br or CF claim 1 , at least one of these radicals being F or CF.3. The solid polymer electrolyte as claimed in claim 1 , in which the thermoplastic polymer is a fluoropolymer chosen from poly(vinylidene fluoride-co-hexafluoropropene) claim 1 , poly(vinylidene fluoride-co-trifluoroethylene) claim 1 , poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene) and poly(vinylidene fluoride-ter-trifluoroethylene-ter-1 claim 1 ,1-chlorofluoroethylene).4. The solid polymer electrolyte as claimed in claim 1 , in which the thermoplastic polymer is a P(VDF-TrFE) copolymer in which the VDF/TrFE mole ratio of the structural units ranges from 9 to 0.1.5. The solid polymer electrolyte as claimed in claim 1 , in which the thermoplastic polymer is a P(VDF-TrFE-CTFE) terpolymer in which the molar content of ...

Protective layers for electrochemical cells

Articles and methods including layers for protection of electrodes in electrochemical cells are provided. As described herein, a layer, such as a protective layer for an electrode, may comprise a plurality of particles (e.g., crystalline inorganic particles, amorphous inorganic particles). In some embodiments, at least a portion of the plurality of particles (e.g., inorganic particles) are fused to one another. For instance, in some embodiments, the layer may be formed by aerosol deposition or another suitable process that involves subjecting the particles to a relatively high velocity such that fusion of particles occurs during deposition. In some embodiments, the layer (e.g., the layer comprising a plurality of particles) is an ion-conducting layer.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

This non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The separator includes; a porous base material; a first filler layer which contains phosphate particles as a primary component and is arranged on one surface of the base material; and a second filler layer which is arranged on the other surface of the base material and which contains at least one type of compound selected from the group consisting of an aromatic polyamide, an aromatic polyimide and an aromatic polyamideimide. The BET specific surface area of the phosphate particles is 5-100 m/g. The content of the aforementioned compounds in the second filler layer is 15 mass % or more. 1. A non-aqueous electrolyte secondary battery comprising:a positive electrode;a negative electrode; anda separator interposed between the positive electrode and the negative electrode, wherein the separator comprises:a porous base member;a first filler layer which contains phosphate particles as a primary component, and which is placed over one surface of the base member; anda second filler layer which contains one or more compounds selected from the group consisting of an aromatic polyamide, an aromatic polyimide, and an aromatic polyamideimide, and which is placed over the other surface of the base member,{'sup': 2', '2, 'a BET specific surface area of the phosphate particles is greater than or equal to 5 m/g and less than or equal to 100 m/g, and'}a content of the compound in the second filler layer is greater than or equal to 15 mass %.2. The non-aqueous electrolyte secondary battery according to claim 1 , whereinthe content of the compound in the second filler layer is greater than or equal to 20 mass % and less than or equal to 40 mass %.3. The non-aqueous electrolyte secondary battery according to claim 1 , whereina content of the phosphate particles in the first filler layer is greater than ...

Ion exchange membrane and method for manufacturing same

A method for manufacturing an ion exchange membrane is provided. The method for manufacturing an ion exchange membrane, according to one embodiment of the present invention, comprises the step of electrospinning a support fiber producing solution and an ion exchange fiber producing solution respectively to prepare a laminate in which a support fiber mat consisting of a support fiber and an ion exchange fiber mat consisting of an ion exchange fiber are alternatively laminated. According to the present invention, it is possible to simply control factors, such as the thickness, electroconductivity and mechanical strength of the membrane, and the diameter/ratio of a pore, etc. to be suitable for the use of ion exchange membrane during the manufacturing process, to simplify the manufacturing process. As such, the ion exchange membrane manufactured by the method can be utilized as a universal ion exchange membrane which has a large ion exchange capacity, a small electrical resistance, and a small diffusion coefficient as well as excellent mechanical strength and durability.

Fluoropolymer composition stabilized against changes in ph

The present invention relates to a composition comprising particles of at least one 1,1-difluoroethylene (VDF)-based fluoropolymer, in admixture with a stabilizer agent selected from alkaline metal hydrogencarbonates or hydrogenphosphates, and to uses of said composition notably in electrochemical cells.

METHOD FOR THE FABRICATION OF A HYBRID SOLID ELECTROLYTE MEMBRANE, AND AN ALL-SOLID-STATE LITHIUM BATTERY USES THE MEMBRANE

The present invention provides a method for the fabrication of a LaZrGa(OH)metal hydroxide precursor with a co-precipitation method in a continuous TFR reactor. The present invention also provides a method for the fabrication of an ion-doped all-solid-state lithium-ion conductive material with lithium ionic conductivity, and mixing which in the polymer base material, using a doctor-blade coating method to prepare a free standing double layered and triple layered organic-inorganic hybrid solid electrolyte membrane. Furthermore, the present invention provides an all-solid-state lithium battery using the aforementioned hybrid solid electrolyte membrane and measure the electrochemical performance. The all-solid-state lithium battery may enhance the lithium ionic conductivity, and lower the interfacial resistance between the solid electrolyte membrane and the electrode, therefore the battery may have excellent performance, and prevent the lithium-dendrite formation effectively to enhance the safety. 1. A method for the fabrication of a free standing double layered organic-inorganic hybrid solid electrolyte membrane , comprising the steps of:step (1): preparing an ion-doped all-solid-state lithium-ion conductive material with lithium ionic conductivity:{'sub': 'x', '(1-a) mixing LaZrGa(OH)metal hydroxide precursor, lithium salts, which serve as a lithium source, and a source of ion doping, to form a mixture; in a milling pot containing methanol solvent, grinding and mixing the mixture with the ball mill to form a mixture solution; after grinding, taking out the milling ball from the milling pot, and placing the milling pot in an oven to dry the mixture solution, in order to remove the methanol solvent and to form the powders; wherein,'}{'sub': 'x', 'a method for the fabrication of said LaZrGa(OH)metal hydroxide precursor comprises the steps of(a) dissolving metal salt powders, which separately serve as a lanthanum source, a zirconium source and a gallium source, in ...

Composite separator, method for making the same, and lithium ion battery using the same

A composite separator comprises a non-woven fabric-polymer composite separator substrate and a composite gel combined with the non-woven fabric-polymer composite separator substrate. The composite gel comprises a gel polymer and a nano-barium sulfate whose surface is modified with lithium carboxylate group. The nano-barium sulfate is dispersed to the gel polymer. The non-woven fabric-polymer composite separator substrate comprises a non-woven fabric and a soluble heat-resistant polymer. A method for making the composite separator and a lithium ion battery comprising the composite separator are also disclosed in the present disclosure.

AIR ELECTRODE/SEPARATOR ASSEMBLY AND METAL-AIR SECONDARY BATTERY

Provided is an air electrode/separator assembly including a hydroxide ion conductive dense separator and an air electrode layer provided on one side of the hydroxide ion conductive dense separator. The air electrode layer includes: an internal catalyst layer provided closer to the hydroxide ion conductive dense separator and filled with a mixture containing a hydroxide ion conductive material, an electron conductive material, an organic polymer, and an air electrode catalyst (provided that the hydroxide ion conductive material may be the same material as the air electrode catalyst, and provided that the electron conductive material may be the same material as the air electrode catalyst); and an outermost catalyst layer provided away from the hydroxide ion conductive dense separator having a porosity of 60% or more, composed of a porous current collector and a layered double hydroxide (LDH) covering a surface thereof. 1. An air electrode/separator assembly comprising a hydroxide ion conductive dense separator and an air electrode layer provided on one side of the hydroxide ion conductive dense separator , wherein the air electrode layer comprises:an internal catalyst layer provided closer to the hydroxide ion conductive dense separator and filled with a mixture comprising a hydroxide ion conductive material, an electron conductive material, an organic polymer, and an air electrode catalyst, provided that the hydroxide ion conductive material may be the same material as the air electrode catalyst, and provided that the electron conductive material may be the same material as the air electrode catalyst, andan outermost catalyst layer provided away from the hydroxide ion conductive dense separator, composed of a porous current collector and a layered double hydroxide (LDH) covering the surface thereof, and having a porosity of 60% or more.2. The air electrode/separator assembly according to claim 1 , wherein the LDH has a form of a plurality of LDH platy particles in ...

SEPARATOR AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

This separator is provided with a resin substrate, a first heat-resistant layer that covers the entirety of one surface of the resin substrate, a second heat-resistant layer that covers a portion of the other surface of the resin substrate, and an uncovered region that is in the other surface of the resin substrate and that is not covered by the second heat-resistant layer, wherein the first heat-resistant layer and the second heat-resistant layer each include inorganic particles and a binder. In each of the heat-resistant layers, the contained amount of the inorganic particles is 50-90 mass %, the contained amount of the binder is 10-50 mass %, and the uncovered region is connected to the end portion of the resin substrate. 1. A separator , comprising:a resin substrate;a first heat-resistant layer covering the whole of a first surface of the resin substrate;a second heat-resistant layer covering part of a second surface of the resin substrate; anda non-covered region on the second surface of the resin substrate, the non-covered region not being covered with the second heat-resistant layer, whereinthe first heat-resistant layer and the second heat-resistant layer each include inorganic particles and a binder, a content of the inorganic particles in each heat-resistant layer is 50 mass % to 90 mass %, and a content of the binder in each heat-resistant layer is 10 mass % to 50 mass %, andthe non-covered region is in communication with an edge of the resin substrate.2. The separator according to claim 1 , wherein the binder includes polyvinylidene fluoride.3. The separator according to claim 1 , wherein the non-covered region includes a lateral non-covered region extending from one lateral edge to the other lateral edge of the resin substrate.4. The separator according to claim 1 , wherein the form of the non-covered region is linear.5. The separator according to claim 1 , wherein the area of the non-covered region is 5% to 20% based on an area of the second surface of ...

Composite Separator and Electrochemical Device Including the Same

Provided are a composite separator including a coating layer including inorganic particles and a binder formed on a porous substrate, which has improved coatability and improved thermal shrinkage, and a lithium secondary battery using the same. 1. A composite separator comprising:a porous substrate; anda coating layer comprising inorganic particles and a binder formed on one surface or both surfaces of the porous substrate,wherein the binder comprises a copolymer comprising: (a) a unit derived from (meth)acrylamide; (b) a unit derived from any one or more selected from (b-1) (meth)acrylic acid and (b-2) a (meth)acrylic acid salt; and (c) a unit derived from an addition-polymerizable monomer containing a sulfonate.3. The composite separator of claim 2 , wherein R claim 2 , R claim 2 , and Rare hydrogen claim 2 , and Ris methyl.4. The composite separator of claim 1 , wherein the copolymer further comprises a repeating unit derived from N-methylolacrylamide.5. The composite separator of claim 1 ,wherein the copolymer comprises: 49 to 98 mol % of (a), 1 to 50 mol % of (b-1)+(b-2), and 0.0001 to 1 mol % of (c), and(b-1):(b-2) is at a mole ratio of 0:100 to 10:90.6. The composite separator of claim 5 ,wherein the copolymer comprises (b-1) and (b-2) at a mole ratio of 1:99 to 2:98.7. The composite separator of claim 1 , wherein the binder further comprises a crosslinking agent.8. The composite separator of claim 7 , wherein the crosslinking agent is any one or a mixture of two or more selected from glycol-based compounds and polyol compounds.9. The composite separator of claim 1 , wherein the copolymer has a weight average molecular weight of 500 claim 1 ,000 to 2 claim 1 ,000 claim 1 ,000 g/mol.10. The composite separator of claim 1 , wherein a content ratio of the inorganic particles:the binder is 80:20 to 99.9:0.1 by weight.11. The composite separator of claim 1 , wherein the composite separator has a thermal shrinkage rate both in a machine direction (MD) and in a ...

Separator for a non-aqueous secondary battery, and non-aqueous secondary battery

A separator for a non-aqueous secondary battery, the separator including: a porous substrate; and an adhesive porous layer provided on one or both sides of the porous substrate and including a polyvinylidene fluoride-based resin, the adhesive porous layer would exhibit a ratio of an area intensity of a β-phase-crystal-derived peak of the polyvinylidene fluoride-based resin to a sum of an area intensity of an α-phase-crystal-derived peak of the polyvinylidene fluoride-based resin and the area intensity of the β-phase-crystal-derived peak of the polyvinylidene fluoride-based resin of from 10% to 100% when an x-ray diffraction spectrum is obtained by performing measurement by an x-ray diffraction method.

SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, SECONDARY BATTERY, AND MANUFACTURING METHOD OF SECONDARY BATTERY

A separator for a non-aqueous secondary battery includes: a polyimide porous film; and adhesive resin particles that are attached to a surface of the polyimide porous film and have a responsiveness to at least one of pressure and heat. 1. A separator for a non-aqueous secondary battery , comprising:a polyimide porous film; andadhesive resin particles that are attached to a surface of the polyimide porous film and have a responsiveness to at least one of pressure and heat.2. The separator for a non-aqueous secondary battery according to claim 1 ,wherein when an average pore diameter of the polyimide porous film is set to X, and an average particle diameter of the adhesive resin particles is set to Y, a relationship of X Подробнее

POROUS LAYER FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

A nonaqueous electrolyte secondary battery porous layer which has both high-voltage resistance and adhesiveness is provided. The nonaqueous electrolyte secondary battery porous layer contains a resin A, a resin B, and a filler. The resin A has a structure in which a plurality of aromatic rings are connected by chemical bonds, at least some of the chemical bonds being amide bonds, at least some of the chemical bonds being sulfonyl bonds. The resin B is a nitrogen-containing aromatic polymer. The nonaqueous electrolyte secondary battery porous layer contains the resin A in an amount of 20 parts by weight to 80 parts by weight, when a total amount of the resin A and the resin B is regarded as 100 parts by weight. 1. A nonaqueous electrolyte secondary battery porous layer comprising:a resin A;a resin B; anda filler,the resin A having a structure in which a plurality of aromatic rings are connected by chemical bonds,at least some of the chemical bonds being amide bonds,at least some of the chemical bonds being sulfonyl bonds,the resin B being a nitrogen-containing aromatic polymer,the nonaqueous electrolyte secondary battery porous layer comprising the resin A in an amount of 20 parts by weight to 80 parts by weight, when a total amount of the resin A and the resin B is regarded as 100 parts by weight.2. The nonaqueous electrolyte secondary battery porous layer as set forth in claim 1 , wherein 15% to 35% of the chemical bonds are sulfonyl bonds.3. The nonaqueous electrolyte secondary battery porous layer as set forth in claim 1 , wherein the resin A is a wholly aromatic polyamide-based resin containing claim 1 , as a main component claim 1 , units each represented by the following Formula (1):{'br': None, 'sup': 1', '2, '—(NH—Ar—NHCO—Ar—CO)—\u2003\u2003Formula (1)'}wherein{'sup': 1', '2, 'Arand Armay each vary from unit to unit,'}{'sup': 1', '2, 'Arand Arare each independently a divalent group having one or more aromatic rings, and'}{'sup': '1', 'not less than 50% of ...

SEPARATOR FOR ELECTROCHEMICAL DEVICE AND ELECTROCHEMICAL DEVICE COMPRISING THE SAME

A separator for an electrochemical device comprising a porous polymer substrate, and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer comprises inorganic particles and an ion conducting polymer. The ion conducting polymer comprises a fluorine-based copolymer comprising fluoroolefin-based segments with anionic functional groups present in side chains or terminals, and an electrochemical device comprising the same. It is possible to provide a separator with high ionic conductivity and an increased peel strength between the porous polymer substrate and the porous coating layer, and an electrochemical device with improved properties. 1. A separator for an electrochemical device , comprising:a porous polymer substrate; anda porous coating layer on at least one surface of the porous polymer substrate,wherein the porous coating layer comprises inorganic particles and an ion conducting polymer, andwherein the ion conducting polymer comprises a fluorine-based copolymer comprising fluoroolefin-based segments with anionic functional groups present in side chains or terminals of the copolymer.2. The separator for an electrochemical device according to claim 1 , wherein the anionic functional groups comprise at least one of —SOH claim 1 , —COOH claim 1 , -PhOH claim 1 , —ArSOH claim 1 , or —NH.3. The separator for an electrochemical device according to claim 1 , wherein the fluorine-based copolymer has an ionic conductivity of 0.1×10S/cm to 99×10S/cm.4. The separator for an electrochemical device according to claim 1 , wherein the fluorine-based copolymer comprises at least one of an tetrafluoroethylene-based fluorine-based copolymer claim 1 , an ethylene tetrafluoroethylene-based fluorine-based copolymer claim 1 , a vinyl fluoride-based fluorine-based copolymer claim 1 , a vinylidene fluoride-based fluorine-based copolymer claim 1 , a hexafluoropropylene-based fluorine-based copolymer claim 1 , a chlorotrifluoroethylene- ...

Organic/inorganic composite porous separator and preparation method thereof and electrochemical device

The present disclosure provides an organic/inorganic composite porous separator and a preparation method thereof and an electrochemical device. The organic/inorganic composite porous separator comprises: a porous substrate; and an organic/inorganic composite porous coating coated on at least one surface of the porous substrate; the organic/inorganic composite porous coating comprises inorganic particles, an adhesive and organic particles with at least two swelling degrees, and the organic particles are swollen by a plasticizer. A preparation method of an organic/inorganic composite porous separator is used for preparing the previous organic/inorganic composite porous separator. An electrochemical device comprises the organic/inorganic composite porous separator. The separator can form an excellent interface, thereby reducing the risk of organic particles blocking micro pores, helping to improve the permeability of the separator, and improving the conductivity of the separator.

LEAD-ACID BATTERY SEPARATORS, ELECTRODES, BATTERIES, AND METHODS OF MANUFACTURE AND USE THEREOF

New or improved battery separators for lead-acid batteries that include a carbon or mineral additive applied to the separator. In possibly preferred embodiments, the battery separator may include engineered carbon materials applied to the battery separator to modify sulfate crystal formation while decreasing the detrimental consequences of excessive gas evolution into the negative electrode itself. In one embodiment, a method of enhancing the lead-acid energy storage performance of a lead-acid battery may include delivering carbon to the negative active material surface of the battery separator where the carbon may effectively enhance charge acceptance and improve life cycle performance of a lead-acid battery. 124-. (canceled)25. A battery separator for a lead-acid battery comprising , a battery separator made of polyolefin or a battery separator made of polyolefin laminated to a glass layer , a polymer layer , a non-woven layer , or a woven layer whereinan additive having a surface area (BET) of from 10 to 5,000 sqm/g is provided on a surface of the battery separator that faces the positive electrode or on a surface of the battery separator that faces the negative electrode.26. The battery separator of claim 25 , wherein the additive has a surface area (BET) of from 500 to 3 claim 25 ,000 sqm/g.27. The battery separator of claim 25 , wherein the additive has a surface area (BET) of from 1 claim 25 ,500 to 3 claim 25 ,000 sqm/g.28. The battery separator of claim 25 , wherein the battery separator comprises a battery separator made of polyolefin.29. The battery separator of claim 25 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a glass layer.30. The battery separator of claim 25 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a non-woven.31. The battery separator of claim 25 , wherein the battery separator comprises a battery separator made of polyolefin laminated to a ...

alpha-ALUMINA, SLURRY, POROUS MEMBRANE, LAMINATED SEPARATOR, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME

An object of the present invention is to provide an alumina used for a slurry for reducing unevenness in a surface of a porous membrane. The present invention is an α-alumina wherein a crystallite size obtained by a Rietveld analysis is not greater than 95 nm, and a lattice strain obtained by the Rietveld analysis is not greater than 0.0020. A BET specific surface area by a nitrogen adsorption method of the α-alumina is preferably not greater than 10 m/g. A particle diameter D50 equivalent to 50% cumulative percentage by volume of the α-alumina is also preferably not greater than 2 μm. 1. An α-alumina whereina crystallite size obtained by a Rietveld analysis is not greater than 95 nm, anda lattice strain obtained by the Rietveld analysis is not greater than 0.0020.2. The α-alumina according to claim 1 , wherein a BET specific surface area by a nitrogen adsorption method is not greater than 10 m/g.3. The α-alumina according to claim 1 , wherein a particle diameter D50 equivalent to 50% cumulative percentage by volume is not greater than 2 μm.4. The α-alumina according to claim 1 , whereinthe crystallite size is not less than 50 nm and not greater than 95 nm, andthe lattice strain is not less than 0.0001 and not greater than 0.0010.5. A slurry comprising:{'claim-ref': {'@idref': 'CLM-00001', '#text': 'claim 1'}, '#text': 'the α-alumina according to ;'}a binder; anda solvent.6. A porous membrane comprising the α-alumina according to any .7. A laminated separator comprising:a separator; and{'claim-ref': {'@idref': 'CLM-00006', '#text': 'claim 6'}, '#text': 'the porous membrane, according to , laminated on at least one of surfaces of the separator.'}8. A nonaqueous electrolyte secondary battery comprising:a positive electrode;a negative electrode;a nonaqueous electrolyte; anda separator, wherein{'claim-ref': {'@idref': 'CLM-00006', '#text': 'claim 6'}, '#text': 'the porous membrane according to is formed on at least one of surfaces of the positive electrode, the negative ...

Metal hydride battery with added hydrogen gas, oxygen gas or hydrogen peroxide

The invention relates to a starved metal hydride battery. The battery is characterized in that the battery further comprises added oxygen gas or hydrogen gas or hydrogen peroxide or a combination thereof in order to rebalance the electrodes and replenish the electrolyte by reactions with the electrode materials.

ALUMINA, ALUMINA SLURRY, ALUMINA FILM, LAMINATE SEPARATOR, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF

Disclosed is alumina having a water desorption index H (=(V-V)÷V) of 0.15 or less in a water adsorption/desorption isotherm at 25° C., where Vrepresents a water adsorption amount [mg/g] per 1 g of alumina in the desorption isotherm at a relative water vapor pressure of 0.5, Vrepresents a water adsorption amount [mg/g] per 1 g of alumina in the adsorption isotherm at a relative water vapor pressure of 0.5, and Vrepresents a water adsorption amount [mg/g] per 1 g of alumina in the adsorption isotherm at a relative water vapor pressure of 0.9. 2. The alumina according to claim 1 , wherein a maximum value of absorbance at 3000 to 3200 cmis 0.30 or less in a transmission infrared absorption spectrum obtained by measuring a sample claim 1 , prepared using the alumina and having a diameter of 10 mmφ and a mass of 20 mg claim 1 , by Fourier transform infrared spectroscopy.3. The alumina according to claim 1 , containing one or more elements selected from the group consisting of K claim 1 , Mg claim 1 , Ca claim 1 , Sr claim 1 , Ba claim 1 , and La claim 1 , in which a total content of the element is 200 ppm by mass or more and 50000 ppm by mass or less.4. The alumina according to claim 1 , having a 10% particle diameter D10 of 0.25 μm or more in a volume-based cumulative particle size distribution.5. The alumina according to claim 1 , having a 90% particle diameter D90 of 3.0 μm or less in the volume-based cumulative particle size distribution.6. The alumina according to claim 1 , having a BET specific surface area of 1 m/g or more and 10 m/g or less.7. An alumina slurry comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the alumina according to ;'}a binder; anda solvent.8. An alumina film comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the alumina according to ; and'}a binder.9. A laminate separator comprising:a separator; and{'claim-ref': {'@idref': 'CLM-00008', 'claim 8'}, 'the alumina film according to formed on a surface of the separator.'}10. ...

Separator for electrochemical cell and method for its manufacture

An electrode/separator assembly for use in an electrochemical cell includes a current collector; a porous composite electrode layer adhered to the current collector, said electrode layer comprising at least electroactive particles and a binder; and a porous composite separator layer comprising inorganic particles substantially uniformly distributed in a polymer matrix to form nanopores and having a pore volume fraction of at least 25%, wherein the separator layer is secured to the electrode layer by a solvent weld at the interface between the two layers, said weld comprising a mixture of the binder and the polymer. Methods of making and using the assembly are also described.

CLOSED-LOOP LEAD ACID BATTERY RECYCLING PROCESS AND PRODUCT

A closed-loop system of tracking and managing the recycling and manufacturing a lead acid battery is described herein. The system includes collecting one or more used lead acid batteries, collecting data related to the one or more lead acid batteries, and processing the one or more lead acid batteries. Processing the one or more lead acid batteries includes separate the batteries into lead, polymer, acid, and separator components and isolate the components, The lead and polymer are then recycled, and data is collected related to the recycled lead and recycled polymer. A new lead acid battery is created using the recycled lead and the recycled polymer and provided to a point of sale location. 1. A closed-loop process of managing recycling and manufacturing a lead acid battery , the process comprising:collecting one or more used lead acid batteries from a point of sale location;collecting, via a first terminal, first data related to the one or more lead acid batteries collected;processing, at a second location, the one or more lead acid batteries collected so as to separate the batteries into lead, polymer, acid, and separator components and isolate said components;recycling the lead and the polymer;collecting, via a second terminal, second data related to the recycled lead and recycled polymer;creating a new lead acid battery using the recycled lead and the recycled polymer; andproviding the new lead acid battery to the point of sale location.2. The process of claim 1 , further comprising measuring a weight of the batteries using a scale claim 1 , wherein the weight of the batteries is the first data.3. The process of claim 1 , further comprising measuring a weight of the recycled lead and recycled polymer using a scale claim 1 , wherein the weight of the recycled lead and recycled polymer is the second data.4. The process of claim 1 , further comprising comparing the first data and the second data.5. The process of claim 4 , further comprising determining a ...

Method for producing separator for nonaqueous electrolyte electricity storage devices and method for producing porous epoxy resin membrane

Provided is a method for producing a separator for nonaqueous electrolyte electricity storage devices that includes a porous epoxy resin membrane, the method including: a step (i) of preparing an epoxy resin composition containing an epoxy resin, a curing agent, and a porogen; a step (ii) of cutting a cured product of the epoxy resin composition into a sheet shape or curing a sheet-shaped formed body of the epoxy resin composition so as to obtain an epoxy resin sheet; a step (iii) of removing the porogen from the epoxy resin sheet using a halogen-free solvent so as to form a porous epoxy resin membrane; a step (iv) of irradiating the porous epoxy resin membrane with infrared ray so as to measure infrared absorption characteristics of the porous epoxy resin membrane; and a step (v) of calculating a membrane thickness and/or an average pore diameter of the porous epoxy resin membrane based on the infrared absorption characteristics. This production method can avoid the use of a solvent that places a large load on the environment, and is adapted for control of parameters such as the average pore diameter and the membrane thickness.

Separator for batteries and method for manufacturing the same

A separator which is permeable to hydroxide ion—contains at least one Dendrite Stopping Substance such as Ni(OH)2, or its precursor.

COMPOSITE LAYERS OR SEPARATORS FOR LEAD ACID BATTERIES

Disclosed herein are novel or improved fibrous layers, composites, composite separators, separators, composite mat separators, composite mat separators containing fibers and silica particles, battery separators, lead acid battery separators, and/or flooded lead acid battery separators, and/or batteries, cells, and/or methods of manufacture and/or use of such fibrous layers, composites, composite separators, separators, battery separators, lead acid battery separators, cells, and/or batteries. In addition, disclosed herein are methods, systems, and battery separators for enhancing battery life, reducing internal resistance, reducing metalloid poisoning, reducing acid stratification, and/or improving uniformity in at least enhanced flooded batteries. 135.-. (canceled)36. A battery separator comprising embossed ribs or other embossments , and wherein the battery separator comprises fibers.37. The battery separator of claim 36 , wherein the battery separator comprises embossed ribs.38. The battery separator of claim 36 , wherein the fibers comprise glass fibers claim 36 , synthetic fibers claim 36 , ceramic fibers claim 36 , or combinations thereof.39. The battery separator of claim 38 , wherein the fibers comprise glass fibers.40. The battery separator of claim 38 , wherein the fibers comprise glass fibers and synthetic fibers.41. The battery separator of claim 36 , comprising fibers claim 36 , silica claim 36 , and binder.42. The battery separator of claim 41 , wherein the fibers comprise glass fibers claim 41 , synthetic fibers claim 41 , ceramic fibers claim 41 , or combinations thereof.43. The battery separator of claim 42 , wherein the fibers comprise glass fibers and synthetic fibers.44. The battery separator of claim 41 , wherein the silica is flocculated silica.45. The battery separator of claim 41 , wherein the binder is a resin binder or a polymeric binder.46. An AGM Battery comprising the battery separator of .47. An AGM Battery comprising the battery ...

COATING SLURRY WITH HIGH ADHESION AND HIGH IONIC CONDUCTIVITY, PREPARATION METHOD THEREOF, AND LITHIUM BATTERY SEPARATOR

A coating slurry with high adhesion and high ionic conductivity, a preparation method thereof, and a lithium battery separator are provided. The coating slurry with the high adhesion and the high ionic conductivity includes: PEAE: 1 to 60 parts; a dispersing agent: 0.01 to 10 parts; a wetting agent: 0.01 to 15 parts; and a solvent: 100 parts. The PEAE can be evenly coated on a basal membrane to form a lithium battery separator, which solves the problem that pure PEAE cannot be directly and evenly coated on a separator. The PEAE is coated on the basal membrane for the first time to prepare the lithium battery separator, which ensures that the lithium battery separator has characteristics of the high adhesion and the high ionic conductivity. 1. A coating slurry , comprising the following raw materials in parts by mass:a ternary composite conductive adhesive (PEAE): 1 to 60 parts;a dispersing agent: 0.01 to 10 parts;a wetting agent: 0.01 to 15 parts; anda solvent: 100 parts.2. The coating slurry according to claim 1 , whereinthe PEAE is prepared from poly(3,4-ethylenedioxythiophene) (PEDOT), polyethylene oxide (PEO), and polyacrylic acid (PAA) through in-situ polymerization.3. The coating slurry according to claim 2 , whereinthe in-situ polymerization comprises:dissolving the PEDOT in a sodium polystyrene sulfonate (PSS) aqueous dispersion, adding a PEO powder to obtain a first resulting mixture, and stirring the first resulting mixture at room temperature until the PEO powder is completely dissolved;adding solid sodium bisulfate, stirring for dissolution to obtain a second resulting mixture, and heating the second resulting mixture to 70° C.; andunder a protection of nitrogen, simultaneously dropwise adding an ammonium persulfate (APS) aqueous solution and an acrylic monomer to allow a reaction.4. The coating slurry according to claim 2 , whereinthe PEDOT, the PEO, and the PAA have a mass ratio of 1:(0.5-0.9):(0.6-1.0).5. The coating slurry according to claim 1 , ...

MULTILAYER NANOPOROUS SEPARATOR

A separator for a lithium battery having (a) a porous polymeric layer, such as a polyethylene layer; and (b) a nanoporous inorganic particle/polymer layer on both sides of the polymeric layer, the nanoporous layer having an inorganic oxide and one or more polymers; the volume fraction of the polymers in the nanoporous layer is about 15% to about 50%, and the crystallite size of the inorganic oxide is 5 nm to 90 nm. 1. A separator for use in a lithium battery comprising:(a) a porous polymeric layer, which porous polymeric layer comprises a plurality of pores, and(b) 0.27 grams, or greater, per square meter of boehmite particles disposed within the plurality of pores of the porous polymeric layer.2. The separator of claim 1 , wherein the boehmite particles comprise hydrophobic boehmite particles.3. The separator of claim 2 , wherein the hydrophobic boehmite particles comprise a reaction product of an organic carbonate with boehmite.4. The separator of claim 3 , wherein the organic carbonate is ethylene carbonate.5. The separator of claim 3 , wherein the organic carbonate is fluoroethylene carbonate.6. The separator of claim 2 , wherein the hydrophobic boehmite particles comprise an organic polymer chemically reacted to at least a portion of the boehmite of said boehmite particles.7. The separator of claim 1 , wherein an average crystallite size of said boehmite particles disposed within the pores of said porous polymeric layer is between 5 nm and 25 nm.8. The separator of claim 1 , wherein an average crystallite size of said boehmite particles disposed within the pores of said porous polymeric layer is between 5 nm and 8 nm.9. The separator of claim 1 , wherein the separator further comprises a nanoporous layer adjacent at least one of two opposing sides of the porous polymeric layer claim 1 , wherein said nanoporous layer comprises boehmite particles and one or more organic polymer binders.10. The separator of claim 9 , wherein the boehmite particles of said ...

COATED MICROPOROUS MEMBRANES, AND BATTERY SEPARATORS, BATTERIES, VEHICLES, AND DEVICES COMPRISING THE SAME

Disclosed herein are battery separators that include a microporous membrane and a coating. The coating may comprise, consist, or consist essentially of polymeric components, inorganic components, or combinations thereof. The battery separators described herein are, among other things, thinner, stronger, and more wettable with electrolyte than some prior battery separators. The battery separators may be used in secondary or rechargeable batteries, including lithium ion batteries. The batteries may be used in vehicles or devices such as cell phones, tablets, laptops, and e-vehicles. 1. A battery separator comprising a coating on one or both sides of a microporous membrane , the coating on at least one side comprising:an inorganic component; andat least one of a wet adhesion polymer and a dry adhesion polymer.2. The battery separator of claim 1 , wherein the coating comprises an inorganic component and a wet adhesion polymer.3. The battery separator of claim 2 , wherein the coating comprises between 10 and 80% inorganic component.4. The battery separator of claim 3 , wherein electrolyte wettability of the coating is a <35° contact angle claim 3 , preferably less than 30°.5. The battery separator of claim 2 , wherein a particle size of the inorganic component is larger than a particle size of the wet adhesion polymer when the coating is in the dry state and a particle size of the wet adhesion polymer is larger than that of the inorganic component in a state where the coating is wet with electrolyte.6. The battery separator of claim 5 , wherein the coating is one molecule thick claim 5 , where the molecule is one molecule of the inorganic component or of the wet adhesion polymer.7. The battery separator of claim 1 , wherein the wet adhesion polymer is a fluoropolymer.8. The battery separator of claim 1 , wherein the coating comprises an inorganic component and a dry adhesion polymer.9. The battery separator of claim 8 , wherein the dry adhesion polymer has a glass ...

Separator for rechargeable lithium battery and rechargeable lithium battery including the same

A separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator, the separator including a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes organic filler particles, fluorine organic binder particles, and (meth)acryl organic binder particles, an average particle diameter of the organic filler particles is equal to or greater than an average particle diameter of the fluorine organic binder particles, and the fluorine organic binder particles are coated on the porous substrate as a part of the coating layer in an amount of less than about 0.1 g/m 2 per surface.

FLUOROPOLYMER MEMBRANE FOR ELECTROCHEMICAL DEVICES

The present invention pertains to a membrane for an electrochemical device, to a process for manufacturing said membrane and to use of said membrane in a process for manufacturing an electrochemical device. 2. The membrane according to wherein the at least one monomer (FM) is selected from the group consisting of:{'sub': 2', '8, 'C-Cperfluoroolefins;'}{'sub': 2', '8, 'C-Chydrogenated fluoroolefins;'}{'sub': 2', 'f0', 'f0', '1', '6, 'perfluoroalkylethylenes of formula CH═CH—Rwherein Ris a C-Cperfluoroalkyl;'}{'sub': 2', '6, 'chloro- and/or bromo- and/or iodo-C-Cfluoroolefins;'}{'sub': 2', '0', '0', '1', '12', '1', '12', '1', '12, 'CF═CFOX(per)fluoro-oxyalkylvinylethers wherein Xis a C-Calkyl group, a C-Coxyalkyl group or a C-C(per)fluorooxyalkyl group having one or more ether groups;'}{'sub': 2', '2', 'f2', 'f2', '1', '6', '1', '6, '(per)fluoroalkylvinylethers of formula CF═CFOCFORwherein Ris a C-Cfluoro- or perfluoroalkyl group or a C-C(per)fluorooxyalkyl group having one or more ether groups;'}{'sub': 2', '0', '0', '1', '12', '1', '12', '1', '12', '0, 'functional (per)fluoro-oxyalkylvinylethers of formula CF═CFOYwherein Yis a C-Calkyl group or (per)fluoroalkyl group, a C-Coxyalkyl group or a C-C(per)fluorooxyalkyl group having one or more ether groups and Ycomprising a carboxylic or sulfonic acid group, in its acid, acid halide or salt form; and'}fluorodioxoles.3. The membrane according to claim 1 , wherein polymer (F) is a partially fluorinated fluoropolymer comprising recurring units derived from vinylidene fluoride (VDF) claim 1 , at least one monomer (MA) and at least one fluorinated monomer (FM2).4. The membrane according to claim 3 , wherein polymer (F) comprises recurring units derived from:at least 60% by moles of vinylidene fluoride (VDF),from 0.01% to 10% by moles of at least one (meth)acrylic monomer (MA), and{'sub': '1', 'from 0.1% to 15% by moles of at least one fluorinated monomer (FM2) selected from vinyl fluoride (VF), chlorotrifluoroethylene (CTFE ...

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

A separator for use in a non-aqueous electrolyte secondary battery according to the present invention comprises a porous substrate and a filler layer disposed upon the substrate. The filler layer includes phosphate particles and inorganic particles having a higher heat resistance than the phosphate particles. The D10 particle size (D) of the phosphate particles on a volume basis is 0.02 μm to 0.5 μm, inclusive, and is smaller than the average pore size of the pores in the substrate. The BET specific surface area of the phosphate particles is 5 m/g to 100 m/g, inclusive, and is greater than the BET specific surface area of the inorganic particles. The D50 particle size (D) of the inorganic particles on a volume basis is greater than the D50 particle size (D) of the phosphate particles on a volume basis. 1. A non-aqueous electrolyte secondary battery comprising:an electrode element having a positive electrode, a negative electrode, and a separator; anda non-aqueous electrolyte, whereinthe separator comprises a porous base member, and a filler layer placed over the base member, the filler layer includes phosphate particles and inorganic particles having a higher thermal endurance than the phosphate particles,{'sub': '10', 'a volume-based 10% particle size (D) of the phosphate particles is greater than or equal to 0.02 μm and less than or equal to 0.5 μm, and is smaller than an average pore size of the base member,'}{'sup': 2', '2, 'a BET specific surface area of the phosphate particles is greater than or equal to 5 m/g and less than or equal to 100 m/g, and is greater than a BET specific surface area of the inorganic particles, and'}{'sub': 50', '50, 'a volume-based 50% particle size (D) of the inorganic particles is greater than a volume-based 50% particle size (D) of the phosphate particles.'}2. The non-aqueous electrolyte secondary battery according to claim 1 , whereina portion of the phosphate particles penetrates into a pore of the base member, andan average ...

ZINC SECONDARY BATTERY AND SEPARATOR FOR ZINC SECONDARY BATTERY

A separator for a zinc secondary battery according to the present disclosure includes a zirconium sulfate-containing porous layer and a porous base material layer that are stacked on each other. The porous base material layer, the zirconium sulfate-containing porous layer, and the porous base material layer may be stacked in this order. The porous base material layer may be a resin porous layer. A zinc secondary battery according to the present disclosure includes the separator for a zinc secondary battery according to the present disclosure. 1. A separator for a zinc secondary battery comprising a zirconium sulfate-containing porous layer and a porous base material layer that are stacked on each other.2. The separator according to claim 1 , wherein the porous base material layer claim 1 , the zirconium sulfate-containing porous layer claim 1 , and the porous base material layer are stacked in this order.3. The separator according to claim 2 , wherein a nonwoven fabric layer claim 2 , the porous base material layer claim 2 , the zirconium sulfate-containing porous layer claim 2 , and the porous base material layer are stacked in this order.4. The separator according to claim 1 , wherein the porous base material layer is a resin porous layer.5. The separator according to claim 4 , wherein the resin porous layer is a polyolefin-based porous layer claim 4 , a polyamide-based porous layer claim 4 , or a nylon-based porous layer.6. A zinc secondary battery comprising the separator for the zinc secondary battery according to .7. The zinc secondary battery according to claim 6 , wherein a negative electrode body claim 6 , the separator for the zinc secondary battery claim 6 , and a positive electrode body are provided in this order claim 6 , and the negative electrode body claim 6 , the separator for the zinc secondary battery claim 6 , and the positive electrode body are impregnated with an electrolyte.8. The zinc secondary battery according to claim 7 , wherein the ...

SEPARATOR FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including the same, the separator including a porous substrate and a coating layer located on at least one surface of the porous substrate, wherein the coating layer includes a heat-resistant binder including a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, a second structural unit derived from (meth)acrylonitrile, and a third structural unit derived from (meth)acrylaminosulfonic acid, a (meth)acrylaminosulfonate or a combination thereof; an adhesive binder having a core-shell structure; and inorganic particles, wherein the adhesive binder has an average particle diameter of 0.2 μm to 1.0 μm, and the inorganic particles have an average particle diameter of 0.2 μm to 1.0 μm. 1. A separator for a lithium secondary battery , comprisinga porous substrate, anda coating layer on at least one surface of the porous substrate,wherein the coating layer includesa heat-resistant binder including a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, a second structural unit derived from (meth)acrylonitrile, and a third structural unit derived from (meth)acrylamidosulfonic acid, a (meth)acrylamidosulfonate salt, or a combination thereof;an adhesive binder having a core-shell structure; andinorganic particles;wherein the adhesive binder has an average particle diameter of 0.2 μm to 1.0 μm, andthe inorganic particles have an average particle diameter of 0.2 μm to 1.0 μm.2. The separator of claim 1 , wherein the adhesive binder is a (meth)acrylic polymer including a structural unit derived from (meth)acrylic acid or (meth)acrylate and structural unit derived from a monomer having a polymerizable unsaturated group.3. The separator of claim 2 , wherein the monomer having the polymerizable unsaturated group is at least one selected from a styrene-based monomer claim 2 , an acid-derived monomer claim ...

Anode for secondary battery and secondary battery having the same

The present invention relates to an anode for a secondary battery, comprising: a spiral anode having at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a conductive layer formed to surround the spiral anode. The anode active material layer of the spirally-twisted has a thin thickness as compared with a single strand of an anode having the same anode active material. Therefore, Li ions can be easily diffused to enhance battery performance. Also, the anode of the present invention has a conductive layer on the surface thereof to prevent or alleviate the release of an anode active material which is caused by volume expansion during charging and discharging processes, and to solve the isolation of the anode active material.

LAMINATE FOR NON-AQUEOUS SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS SECONDARY BATTERY

Disclosed is laminate for a non-aqueous secondary battery which may be prevented from undergoing blocking. The laminate comprises a non-porous substrate layer, and an adhesive layer formed on a surface on one side of the substrate layer, wherein a surface roughness of the surface on the one side of the substrate layer is greater than a surface roughness of a surface on the other side of the substrate layer. Preferably, the surface roughness of the surface on the one side of the substrate layer is 0.20 μm or more and 2.00 μm or less. Preferably, the surface roughness of the surface on the other side of the substrate layer is 0.01 μm or more and 0.15 μm or less. 1. A laminate for a non-aqueous secondary battery , comprising:a non-porous substrate layer; andan adhesive layer formed on a surface on one side of the substrate layer,wherein a surface roughness of the surface on the one side of the substrate layer is greater than a surface roughness of a surface on the other side of the substrate layer.2. The laminate for a non-aqueous secondary battery of claim 1 , whereinthe surface roughness of the surface on the one side of the substrate layer is 0.20 μm or more and 2.00 μm or less.3. The laminate for a non-aqueous secondary battery of claim 1 , whereinthe surface roughness of the surface on the other side of the substrate layer is 0.01 μm or more and 0.15 μm or less.4. The laminate for a non-aqueous secondary battery of claim 1 ,wherein the adhesive layer comprises organic particles, andthe organic particles are made of a polymer which comprises 1% by mass or more and 70% by mass or less of a nitrile group-containing monomer unit.5. The laminate for a non-aqueous secondary battery of claim 1 , whereinthe adhesive layer has a thickness of 0.01 μm or more and 10.0 μm or less.6. A non-aqueous secondary battery claim 1 , comprising:a structure wherein a positive electrode which includes a positive electrode current collector and a positive electrode mixed material layer ...

ELECTROCHEMICAL DEVICE

An electrochemical device includes a cathode, an anode and a separator, the separator being disposed between the cathode and the anode, the separator including a porous substrate and a porous layer, and the porous layer being disposed on a surface of the porous substrate and including inorganic particles and a binder, where a ratio of a puncture elongation of the porous substrate to a puncture force of the porous substrate is about 1.5 mm/N to about 25 mm/N. A lithium-ion battery including the separator, provided by the present application, improves the safety performance of the lithium-ion battery.

SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present disclosure relates to a separator for a lithium secondary battery, and a lithium secondary battery including same, the separator including: a porous substrate, and a heat-resistant layer on at least one surface of the porous substrate, wherein the heat-resistant layer includes a first coating layer including alumina, and a second coating layer including magnesium hydroxide, and the first coating layer and the second coating layer are consecutively disposed in a stacked form on the porous substrate.

BATTERIES UTILIZING CATHODE COATINGS DIRECTLY ON NANOPOROUS SEPARATORS

Provided are methods of preparing a separator/anode assembly for use in an electric current producing cell, wherein the assembly comprises an anode current collector layer interposed between a first anode layer and a second anode layer and a porous separator layer on the side of the first anode layer opposite to the anode current collector layer, wherein the first anode layer is coated directly on the separator layer.

FRICTION ENHANCING CORE SURFACE OF BATTERY SEPARATOR ROLL AND RELATED METHODS

Rolls of battery separator material and related methods are disclosed. A roll of battery separator material includes a core including an outside surface, a separator material rolled around the core, and a friction enhancing surface on at least a portion of the outside surface of the core to prevent the separator material from lateral migration relative to the outside surface of the core.

LONGITUDINAL CONSTRAINTS FOR ENERGY STORAGE DEVICES

A energy storage device for cycling between a charged state and a discharged state, the energy storage device including an enclosure, an electrode assembly and a non-aqueous liquid electrolyte within the enclosure, and a constraint that maintains a pressure on the electrode assembly as the energy storage device is cycled between the charged and the discharged states. 1. An energy storage device for cycling between a charged state and a discharged state , the energy storage device comprising an enclosure , an electrode assembly and a non-aqueous liquid electrolyte within the enclosure , and a constraint that maintains a pressure on the electrode assembly as the energy storage device is cycled between the charged and the discharged states , the electrode assembly comprising a population of electrode structures , a population of counter-electrode structures and an electrically insulating microporous separator material between members of the electrode and counter-electrode populations whereinthe electrode assembly has opposing first and second longitudinal end surfaces separated along a longitudinal axis, and a lateral surface surrounding the longitudinal axis and connecting the first and second longitudinal end surfaces, a combined surface area of the first and second longitudinal end surfaces being less than 33% of a combined surface area of the lateral surface and the first and second longitudinal end surfaces,members of the electrode population and members of the counter-electrode population are arranged in an alternating sequence in a stacking direction that parallels the longitudinal axis within the electrode assembly,the constraint comprises first and second compression members connected by at least one tension member that pulls the compression members toward each other, andthe constraint maintains a pressure on the electrode assembly in the stacking direction that exceeds the pressure maintained on the electrode assembly in each of two directions that are ...

SHEET-TYPE CELL AND METHOD FOR MANUFACTURING SAME

A sheet-type cell disclosed in this application includes an outer case and a power generation element contained in the outer case. The power generation element includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. The separator is constituted by a porous resin sheet. The outer case includes a first outer case member and a second outer case member. Each outer case member includes a thermally fusible resin layer. The first outer case member and the second outer case member are disposed on respective opposite sides of the power generation element. A periphery of the first outer case member and a periphery of the second outer case member are sealed by thermally welding, with a periphery of the separator interposed between the peripheries of the first and second outer case members. 1. A sheet-type cell , comprising: a first outer case member; and', 'a second outer case member; and, 'an outer case having a thermally fusible resin layer, the outer case comprising a positive electrode proximate to the first outer case member;', 'a negative electrode proximate to the second outer case member;', 'a separator constituted by a porous resin sheet between the positive electrode and the', 'negative electrode; and', 'an electrolyte solution,, 'a power generation element provided between the first outer case member and the second outer case member, the power generation element comprisingwherein the outer case is sealed with a periphery of the separator interposed between a periphery of the first outer case member and a periphery of the second outer case member.2. The sheet-type cell according to claim 1 , further comprising:a water repellent membrane between the first outer case member and the positive electrode,wherein the outer case is sealed with the periphery of the separator and a periphery of the water repellent membrane interposed between the peripheries of the first and second outer case members.3. The sheet-type cell according to ...

Separator for electrochemical device and method for manufacturing the same

A separator for an electrochemical device. The separator includes a porous coating layer formed from an acid, which is crosslinkable. As a result, the separator has increased heat resistance, safety and physical strength, shows improved peel strength between the porous substrate and the porous coating layer, and prevents separation of the inorganic particles from the porous coating layer. In addition, the separator shows an improved crosslinking degree so that the added amount of a crosslinkable binder resin may be reduced. Thus, it is possible to increase the added amount of a non-crosslinkable resin, inorganic particles, or both. Even when using a small amount of a crosslinkable binder resin, it is possible to provide both an effect of improving heat resistance and an effect of improving adhesion.

SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY AND NON-AQUEOUS SECONDARY BATTERY

An embodiment of the invention provide a separator for a non-aqueous secondary battery, including a porous substrate; and a heat-resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a binder resin and barium sulfate particles, in which an average primary particle diameter of the barium sulfate particles contained in the heat-resistant porous layer is from 0.01 μm to less than 0.30 μm, and in which a volume ratio of the barium sulfate particles in the heat-resistant porous layer is from 30% by volume to less than 50% by volume. 1. A separator for a non-aqueous secondary battery , the separator comprising:a porous substrate; anda heat-resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a binder resin and barium sulfate particles,wherein an average primary particle diameter of the barium sulfate particles contained in the heat-resistant porous layer is from 0.01 μm to less than 0.30 μm, andwherein a volume ratio of the barium sulfate particles in the heat-resistant porous layer is from 30% by volume to less than 50% by volume.2. The separator for a non-aqueous secondary battery according to claim 1 , wherein the binder resin contains a polyvinylidene fluoride type resin.3. The separator for a non-aqueous secondary battery according to claim 2 , wherein a weight-average molecular weight of the polyvinylidene fluoride type resin is from 600 claim 2 ,000 to 3 claim 2 ,000 claim 2 ,000.4. The separator for a non-aqueous secondary battery according to claim 1 , wherein the binder resin contains at least one selected from the group consisting of a wholly aromatic polyamide claim 1 , a polyamideimide claim 1 , a poly(N-vinylacetamide) claim 1 , a polyacrylamide claim 1 , a copolymerized polyether polyamide claim 1 , a polyimide and a polyether imide.5. The separator for a non-aqueous secondary battery according to claim 1 , wherein an area shrinkage ratio of ...

CATIONIC COPOLYMERS WITH PENDANT N-ALLYLIMIDAZOLIUM GROUPS

Cationic copolymers having pendant N-allylimidazolium-containing groups are provided. The cationic copolymers can be used, for example, to provide anion exchange membranes for use in electrochemical cells such as fuel cells, electrolyzers, batteries, and electrodialysis cells. The anion exchange membranes typically have good mechanical properties and ionic conductivity. 2. (canceled)3. (canceled)4. The cationic copolymer of claim 1 , wherein Rof the third monomeric units is a cationic claim 1 , nitrogen-containing heterocyclic group optionally substituted with one or more alkyl groups.5. The cationic copolymer of claim 4 , wherein the cationic claim 4 , nitrogen-containing heterocyclic group is imidazolium substituted with one or more alkyl groups claim 4 , pyridinium claim 4 , or pyridinium substituted with one or more alkyl groups.8. The cationic copolymer of claim 13 , wherein Ris of formula —(NRRR)wherein R claim 13 , R claim 13 , and Rare each independently an alkyl.9. The cationic copolymer of claim 1 , wherein Ris a guanidinium group that is substituted with multiple alkyl groups.10. (canceled)11. The cationic copolymer of claim 1 , wherein the monomeric units having a cationic claim 1 , nitrogen-containing groups are 5 to 100 mole percent first monomeric units of Formula (I) and 0 to 95 mole percent third monomeric units of Formula (III).12. The cationic copolymer of claim 11 , wherein the monomeric units having a cationic claim 11 , nitrogen-containing group are 10 to 100 mole percent first monomeric units of Formula (I) and 0 to 90 mole percent third monomeric units of Formula (III).13. (canceled)14. An anion exchange membrane comprising the cationic copolymer of .15. An electrochemical cell comprising an anode claim 1 , a cathode claim 1 , and an anion exchange membrane positioned between the anode and the cathode claim 1 , wherein the anion exchange membrane comprises the cationic copolymer of . This invention was made with Government support under ...

Cable-type secondary battery

The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: a core for supplying lithium ions, which comprises an electrolyte; an inner electrode, comprising an open-structured inner current collector surrounding the outer surface of the core, and an inner electrode active material layer formed on the surface of the inner current collector; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer and comprising an outer electrode active material layer and an outer current collector. The core disposed in the inner electrode having an open structure, from which the electrolyte of the core for supplying lithium ions can be easily penetrated into an electrode active material, thereby facilitating the supply and exchange of lithium ions.

Cable-type secondary battery and method of preparing the same

Provided is a cable-type secondary battery having a predetermined-shaped horizontal cross section and extending in a longitudinal direction, which includes a hollow core portion having a gel polymer electrolyte injected thereinto, an inner electrode which includes an inner current collector surrounding an outer surface of the hollow core portion and an inner electrode active material layer formed on a surface of the inner current collector, a separation layer surrounding an outer surface of the inner electrode, an outer electrode which includes an outer electrode active material layer surrounding an outer surface of the separation layer and an outer current collector surrounding an outer surface of the outer electrode active material layer, and a protective coating layer.

Porous film, separator for rechargeable battery, and rechargeable battery

At low cost, a porous film has high thermal film rupture resistance and outstanding battery characteristics. The porous film has a porous layer on at least one surface of a porous substrate, and if the surface porosity of the porous layer is defined as α and the cross-sectional void ratio of the porous layer is defined as β, then α/β does not exceed 90%.

Protective layers for electrochemical cells

Articles and methods including layers for protection of electrodes in electrochemical cells are provided. As described herein, a layer, such as a protective layer for an electrode, may comprise a plurality of particles (e.g., crystalline inorganic particles, amorphous inorganic particles). In some embodiments, at least a portion of the plurality of particles (e.g., inorganic particles) are fused to one another. For instance, in some embodiments, the layer may be formed by aerosol deposition or another suitable process that involves subjecting the particles to a relatively high velocity such that fusion of particles occurs during deposition. In some embodiments, the layer (e.g., the layer comprising a plurality of particles) is an ion-conducting layer.

LAYERED ELECTRODE BODY AND BONDING DEVICE FOR LAYERED ELECTRODE BODY

A layered electrode body manufacturing device comprising: a negative electrode cut drum cuts a negative electrode single plate at a first width, generates a negative electrode plate, and conveys same; a negative electrode heat drum heats the negative electrode plate; a positive electrode cut drum cuts a positive electrode single plate at a second width, generates a positive electrode plate, and conveys same; a positive electrode heat drum heats the positive electrode plate; and a bonding drum which positions the negative electrode plate on a first separator single plate, positions a second separator single plate thereon, and positions and bonds the positive electrode plate thereon. The pressing forces between the bonding drum, and the negative and positive electrode heat drums are adjusted. At least a portion of two sides from the outer edge part of the electrode plate is bonded to a separator, and the other two sides are not. 1. A layered electrode assembly in which an electrode plate of a quadrangular shape and a separator of a quadrangular shape are layered , whereinat least a part of two sides among four sides of an outer edge portion of the electrode plate is adhered to the separator, andthe other two sides among the four sides of the outer edge portion of the electrode plate are not adhered to the separator.2. A layered electrode assembly in which a positive electrode of a quadrangular shape and a negative electrode of a quadrangular shape are layered with a separator of a quadrangular shape therebetween , whereinat least a part of two sides among four sides of an outer edge portion of the negative electrode is adhered to the separator,the other two sides among the four sides of the outer edge portion of the negative electrode are not adhered to the separator,at least a part of two sides among four sides of an outer edge portion of the positive electrode is adhered to the separator, andthe other two sides among the four sides of the outer edge portion of the ...

ELECTRODE ASSEMBLY, LAMINATION DEVICE FOR MANUFACTURING THE ELECTRODE ASSEMBLY, AND METHOD FOR MANUFACTURING THE ELECTRODE ASSEMBLY

Discussed are an electrode assembly in which a bonding area of an electrode is minimized to reduce defects that may occur in a manufacturing process, a lamination device for manufacturing the electrode assembly, and a method for manufacturing the electrode assembly. The electrode assembly includes one or more radical units, each of which includes a plurality of electrodes and a plurality of separators, and a sealing part in which both ends of each of the plurality of electrodes and each of the plurality of separators are bonded to each other. 1. An electrode assembly comprising:one or more radical units, each of which comprises:a plurality of electrodes and a plurality of separators; anda sealing part in which both ends of each of the plurality of electrodes and each of the plurality of separators are bonded to each other.2. The electrode assembly of claim 1 , wherein the sealing part of each of the radical units is provided at a side of an electrode on which an electrode tab is disposed claim 1 , among the plurality of electrodes.3. The electrode assembly of claim 1 , further comprising a coating material in which ceramics and a binder are mixed claim 1 , the coating material being applied to only a portion corresponding to the sealing part on a separator of the radical units claim 1 , among the plurality of separators.4. A lamination device for manufacturing an electrode assembly claim 1 , the lamination device comprising:a transfer unit configured to transfer an electrode stack, in which a plurality of electrodes and a separator having a length longer than a width thereof are alternately stacked; anda sealing unit configured to press and seal both ends of the electrode stack transferred by the transfer unit.5. The lamination device of claim 4 , wherein the sealing unit presses and seals both of the ends of the electrode stack through spinning of the sealing unit.6. The lamination device of claim 4 , wherein the sealing unit is constituted by a pair of rollers ...

Polyamide-imide coated separators for high energy rechargeable lithium batteries

The instant disclosure or invention is preferably directed to a polyamide-imide coated membrane, separator membrane, or separator for a lithium battery such as a high energy or high voltage rechargeable lithium battery and the corresponding battery. The separator preferably includes a porous or microporous polyamide-imide coating or layer on at least one side of a polymeric microporous layer, membrane or film. The polyamide-imide coating or layer may include other polymers, additives, fillers, or the like. The polyamide-imide coating may be adapted, for example, to provide oxidation resistance, to block dendrite growth, to add dimensional and/or mechanical stability, to reduce shrinkage, to add high temperature performance (HTMI function), to prevent electronic shorting at temperatures above 200 deg C., and/or the like. The microporous polymeric base layer may be adapted, at least, to hold liquid, gel, or polymer electrolyte, to conduct ions, and/or to block ionic flow between the anode and the cathode in the event of thermal runaway (shutdown function). The polyamide-imide coated separator may be adapted, for example, to keep the electrodes apart at high temperatures, to provide oxidation resistance, to block dendrite growth, to add dimensional stability, to reduce shrinkage, to add high temperature performance (HTMI function), to prevent electronic shorting at temperatures above 200 deg C., to increase puncture strength, and/or to block ionic flow between the anode and the cathode in the event of thermal runaway (shutdown function). Although secondary lithium battery usage may be preferred, the instant polyamide-imide coated membrane may be used in a battery, cell, primary battery, capacitor, fuel cell, textile, filter, and/or composite, and/or as a layer or component in other applications, devices, and/or the like.

LITHIUM-SULFUR BATTERY

A lithium-sulfur battery comprising a separator in which an adsorption layer including a radical compound having a nitroxyl radical site is formed, and in particular, to a lithium-sulfur battery suppressing elution of lithium polysulfide by using an adsorption layer including a radical compound having a nitroxyl radical site and optionally a conductive material on at least one surface of a separator. In the lithium-sulfur battery, elution and diffusion may be prevented by a radical compound having a nitroxyl radical site, a stable radical compound, adsorbing lithium polysulfide eluted from positive electrode, and in addition thereto, electrical conductivity is further provided to provide a reaction site of a positive electrode active material, and as a result, battery capacity and lifetime properties are enhanced. 1. A lithium-sulfur battery comprising:a positive electrode comprising a sulfur-carbon composite;a negative electrode disposed opposite to the positive electrode; anda separator provided between the positive electrode and the negative electrode,wherein the separator comprises a separator body; and a lithium polysulfide adsorption layer formed on at least one surface of the separator body, andthe adsorption layer comprises a radical compound having a nitroxyl radical functional group.2. The lithium-sulfur battery of claim 1 , wherein the radical compound is a polymer having the nitroxyl radical functional group in a molecule thereof.3. The lithium-sulfur battery of claim 2 , wherein the polymer is polymerized from a monomer comprising any one functional group selected from the group consisting of (meth)acrylate claim 2 , acrylonitrile claim 2 , an anhydride claim 2 , styrene claim 2 , epoxy claim 2 , isocyanate and a vinyl group.4. The lithium-sulfur battery of claim 2 , wherein the polymer is one or more selected from the group consisting of poly(2 claim 2 ,2 claim 2 ,6 claim 2 ,6-tetramethyl-1-piperidinyloxyl-4-yl-(meth)acrylate claim 2 , poly(2 claim 2 , ...

SECONDARY BATTERY AND METHOD FOR PRODUCING SECONDARY BATTERY

The present disclosure provides a secondary battery in which the occurrence of springback is suppressed in a wound electrode body having specific external shape dimensions. The secondary battery disclosed herein has a flat-shaped wound electrode body and a battery case that accommodates the wound electrode body. A separator of such a secondary battery has a band-shaped base material layer, and a surface layer containing inorganic particles and a binder. At least one from among a positive electrode plate and a negative electrode plate is bonded to the surface layer of the separator. A width dimension of the positive electrode active material layer in the secondary battery disclosed herein is 200 mm or larger, a thickness dimension of the wound electrode body is 8 mm or larger, and a height dimension of the wound electrode body is 120 mm or smaller. The art disclosed herein allows suitably suppressing the occurrence of springback, despite using a wound electrode body having external shape dimensions that readily give rise to springback. 1. A secondary battery comprising a flat-shaped wound electrode body in which a positive electrode plate and a negative electrode plate are wound across a separator , and a battery case that accommodates the wound electrode body , whereinthe flat-shaped wound electrode body has a pair of curved portions, the outer surfaces of which are curved, and a flat portion, the outer surface of which is flat, and which connects the pair of curved portions,the positive electrode plate has a band-shaped positive electrode core body and a positive electrode active material layer formed on at least one surface of the positive electrode core body,the separator has a band-shaped base material layer, and a surface layer formed on at least one surface of the base material layer, and containing inorganic particles and a binder,at least one of the positive electrode plate and the negative electrode plate in the flat portion is bonded to the surface layer ...

Separator for rechargeable lithium battery and rechargeable lithium battery including same

A separator for a rechargeable lithium battery and a rechargeable lithium battery including the same, the separator including a substrate; and a coating layer on at least one side of the substrate, wherein the coating layer includes a polyvinylidene fluoride-containing compound, and an acryl-containing compound represented by the following Chemical Formula 1:

Block copolymer battery separator

The invention herein described is the use of a block copolymer/homopolymer blend for creating nanoporous materials for transport applications. Specifically, this is demonstrated by using the block copolymer poly(styrene-block-ethylene-block-styrene) (SES) and blending it with homopolymer polystyrene (PS). After blending the polymers, a film is cast, and the film is submerged in tetrahydrofuran, which removes the PS. This creates a nanoporous polymer film, whereby the holes are lined with PS. Control of morphology of the system is achieved by manipulating the amount of PS added and the relative size of the PS added. The porous nature of these films was demonstrated by measuring the ionic conductivity in a traditional battery electrolyte, 1M LiPF 6 in EC/DEC (1:1 v/v) using AC impedance spectroscopy and comparing these results to commercially available battery separators.

ELECTRODE PROTECTION USING A COMPOSITE COMPRISING AN ELECTROLYTE-INHIBITING ION CONDUCTOR

Composite structures including an ion-conducting material and a polymeric material (e.g., a separator) to protect electrodes are generally described. The ion-conducting material may be in the form of a layer that is bonded to a polymeric separator. The ion-conducting material may comprise a lithium oxysulfide having a lithium-ion conductivity of at least at least 10S/cm. 1. An electrochemical cell , comprising:a first electrode comprising lithium;a second electrode;a separator arranged between said first electrode and said second electrode; anda solid ion conductor contacting and/or bonded to the separator,wherein said solid ion conductor comprises a lithium oxysulfide.2. An electrochemical cell , comprising:a first electrode comprising lithium;a second electrode;a separator arranged between said first electrode and said second electrode, wherein the separator comprises pores; anda solid ion conductor contacting and/or bonded to the separator;wherein said solid ion conductor is substantially formed of a non-polymeric material, wherein the solid ion conductor comprises a lithium oxysulfide, wherein the solid ion conductor is present in the form of a layer, wherein the layer coats the separator, and wherein a thickness of the layer is at least 1.1 times an average pore size of the separator and less than or equal to 20 times the average pore size of the separator.3. An electrochemical cell , comprising:a first electrode comprising lithium;a second electrode;a separator arranged between said first electrode and said second electrode; anda solid ion conductor contacting and/or bonded to the separator;wherein said solid ion conductor is substantially formed of a non-polymeric material, wherein the solid ion conductor comprises a lithium oxysulfide, wherein the solid ion conductor is present in the form of a layer, and wherein an RMS surface roughness of the layer is between 0.5 nm and 1 micron.4. The electrochemical cell of claim 1 , wherein the separator comprises pores ...

BATTERY SEPARATORS WITH IMPROVED CONDUCTANCE, IMPROVED BATTERIES, SYSTEMS, AND RELATED METHODS

In accordance with at least selected embodiments, the present disclosure or invention is directed to improved battery separators, high conductance separators, improved lead-acid batteries, such as flooded lead-acid batteries, high conductance batteries, improved systems, and/or, improved vehicles including such batteries, and/or methods of manufacture or use of such separators or batteries, and/or combinations thereof. In accordance with at least certain embodiments, the present disclosure or invention is directed to improved lead acid batteries incorporating the improved separators and which exhibit increased conductance. Particular, non-limiting examples may include lead acid battery separators having structure or features designed to improve conductance, lower ER, lower water loss, and the like. 124-. (canceled)25. A lead acid battery comprising:a polyolefin microporous membrane comprising polyethylene, preferably, ultrahigh molecular weight polyethylene, a particle-like filler, and a processing plasticizer; wherein the particle-like filler is present in an amount of 40% or more by weight; and wherein the polyethylene comprises polymer in a shish-kebab formation comprising a plurality of extended chain crystals (the shish formations) and a plurality of folded chain crystals (the kebab formations) and wherein the average repetition or periodicity of the kebab formations is from 1 nm to 150 nm, preferably less than 120 nm; andhaving a shelf life estimated cold cranking amps loss as compared to an initial value of less than approximately 9%.26. The lead acid battery according to claim 25 , wherein said shelf life estimated cold cranking amps loss as compared to an initial value of less than approximately 8%.27. The lead acid battery according to claim 25 , wherein said shelf life estimated cold cranking amps loss as compared to an initial value of less than approximately 7%.28. The lead acid battery according to claim 25 , wherein said shelf life estimated cold ...

CERAMIC MICROSPHERE, DIAPHRAGM INCLUDING CERAMIC MICROSPHERE AND LITHIUM ION BATTERY INCLUDING DIAPHRAGM

A ceramic microsphere, a diaphragm including the ceramic microsphere and a lithium ion battery including the diaphragm, where the present disclosure differs from a diaphragm of a conventional lithium ion battery mainly in that, two kinds of coating microspheres, the conductive microsphere and the ceramic microsphere, respectively, which have high safety performance by heat sensitively blocking lithium ions and heat sensitively conducting electrons, are prepared by using a polymer coating method, and the two kinds of coating microspheres with high safety are applied to the diaphragm of the lithium ion battery, so that the diaphragm of the lithium ion battery has two functions of heat sensitively blocking lithium ions and heat sensitively conducting electrons, which can effectively improve the safety performance of the lithium ion battery. 1. A ceramic microsphere , having a core-shell structure , namely including a shell and a core , wherein a material for forming the shell comprises a heat sensitive polymer and a conductive agent , and a material for forming the core comprises a ceramic material.2. The ceramic microsphere according to claim 1 , wherein in the ceramic microsphere claim 1 , a mass ratio of the shell to the core is (0.2-1300):(50-80); and/orin the ceramic microsphere, a mass ratio of the heat sensitive polymer and the conductive agent for forming the shell is (100-1000):(1-10); and/orin the ceramic microsphere, a thickness of the shell is 1 nm-5000 nm; and/orin the ceramic microsphere, an average particle diameter of the ceramic microsphere is 0.01 μm-20 μm.3. A preparation method of the ceramic microsphere according to claim 1 , comprising the following steps:coating a material for forming a shell, comprising a heat sensitive polymer and a conductive agent, onto a surface of a material for forming a core, comprising a ceramic material, by using a liquid phase coating method or a solid phase coating method, to prepare a ceramic microsphere; wherein the ...

Hybrid fluoropolymer electrolyte membrane

The present invention pertains to a process for manufacturing a fluoropolymer electrolyte membrane comprising a fluoropolymer hybrid organic/inorganic composite for an electrochemical cell, to a polymer electrolyte membrane obtainable by the process and films and membranes thereof and to an electrochemical cell comprising the polymer electrolyte membrane between a positive electrode and a negative electrode. The present invention also relates to the use of the polymer electrolyte membrane obtainable by the process according to the present invention in an electrochemical device, in particular in secondary batteries.

ELECTRODE WITH INTEGRATED CERAMIC SEPARATOR

An electrode including an integrated separator for use in an electrochemical device may include one or more active material layers, and a separator layer comprising inorganic particles. An interlocking region may couple the separator layer to an adjacent active material layer. In some examples, the interlocking region may include interlocking fingers formed by an interpenetration of active material particles of the active material layers with ceramic particles of the separator. 1. A method of manufacturing an electrode including an integrated separator layer , the method comprising:causing relative motion between an active material composite dispenser and a current collector substrate on which is disposed a first layer of active material composite, wherein the first layer includes a plurality of first active material particles and a first binder, the first active material particles having a first average particle size and a first viscosity; andapplying a separator layer to the first layer of active material composite, using an orifice of the dispenser, the separator layer including a separator composite slurry having a plurality of ceramic particles and a second binder, the ceramic particles having a second average particle size;wherein applying the separator layer forms an interphase layer adhering the separator layer to the first layer of active material composite, the interphase layer including an interpenetration of the first layer and the separator layer in which first fingers of the first layer interlock with second fingers of the separator layer.2. The method of claim 1 , wherein the interphase layer has a third average particle size between the first average particle size and the second average particle size.3. The method of claim 1 , wherein causing the relative motion comprises moving the current collector substrate using a backing roll.4. The method of claim 1 , wherein the dispenser comprises a slot die coating head claim 1 , and the orifice is a slot of ...

LITHIUM SECONDARY BATTERY AND METHOD OF PREPARING THE SAME

The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode, a separator, which includes a coating layer including an organic binder and inorganic particles, and a gel polymer electrolyte formed by polymerization of an oligomer, wherein the organic binder and the gel polymer electrolyte are bonded by an epoxy ring-opening reaction, and a method of preparing the same. 1. A lithium secondary battery comprising:a positive electrode;a negative electrode;a separator comprising a coating layer that includes an organic binder and inorganic particles; anda gel polymer electrolyte formed by polymerization of an oligomer,wherein the organic binder and the gel polymer electrolyte are bonded by an epoxy ring-opening reaction.2. The lithium secondary battery of claim 1 , wherein the organic binder comprises an epoxy group claim 1 , a functional group capable of undergoing a ring-opening reaction with an epoxy group claim 1 , or a combination thereof.3. The lithium secondary battery of claim 1 , wherein the oligomer comprises an epoxy group claim 1 , a functional group capable of undergoing a ring-opening reaction with an epoxy group claim 1 , or a combination thereof.4. The lithium secondary battery of claim 2 , wherein the functional group capable of undergoing a ring-opening reaction with an epoxy group comprises at least one selected from the group consisting of a hydroxyl group (OH) claim 2 , a carboxylic acid group (COOH) claim 2 , an amine group claim 2 , an isocyanate group claim 2 , a mercaptan group claim 2 , and an imide group.5. The lithium secondary battery of claim 1 , wherein the organic binder comprises a unit containing at least one selected from the group consisting of an alkylene group having 1 to 5 carbon atoms which is substituted with at least one halogen element claim 1 , an alkylene oxide group having 1 to 5 carbon atoms claim 1 , an alkylene oxide group having 1 to 5 carbon atoms which is substituted ...

Sodium Electrochemical Interfaces with NaSICON-Type Ceramics

The present invention is directed to the modification of sodium electrochemical interfaces to improve performance of NaSICON-type ceramics in a variety of electrochemical applications. Enhanced mating of the separator-sodium interface by means of engineered coatings or other surface modifications results in lower interfacial resistance and higher performance at increased current densities, enabling the effective operation of molten sodium batteries and other electrochemical technologies at low and high temperatures. 1. A method for improving a sodium electrochemical interface , comprising:{'sub': 1+x+y', 'x', '2−x', 'y', '3−y', '12, 'providing a sodium-ion conducting NaSICON-type ceramic having a surface, wherein the NaSICON-type ceramic comprises a three-dimensional hexagonal framework of corner-sharing oxide tetrahedra and octahedra having the basic formula AM′MBB′O, wherein A is a sodium ion occupying interstitial sites, M and M′ are multivalent transition metal cations occupying octahedral sites, and B and B′ typically are silicon and phosphorous occupying tetrahedral sites, and wherein 0≤x≤2 and 0≤y≤3; and'}forming a sodium ion-conducting intermetallic phase on the surface of the NaSICON-type ceramic, thereby providing a sodium electrochemical interface with improved sodium ion conduction from a sodium source through the NaSICON-type ceramic.2. The method of claim 1 , wherein the NaSICON-type ceramic comprises NaZrSiPO claim 1 , wherein 0≤y≤3.3. The method of claim 1 , wherein the sodium source comprises sodium metal or a sodium metal alloy.4. The method of claim 1 , wherein the step of forming comprises coating the surface of the NaSICON-type ceramic with a metal claim 1 , metalloid claim 1 , or alloy thereof claim 1 , and forming the intermetallic phase with sodium at a temperature below the melting temperature of the metal claim 1 , metalloid claim 1 , or alloy.5. The method of claim 4 , wherein the metal comprises a group 14 or 15 post-transition metal.6. ...

MULTILAYER SEPARATOR AND METHODS OF MANUFACTURE AND USE

A multilayer deep cycle battery separator comprising at least two layers of an automotive-sized separator bonded or welded together. The automotive-sized separator layers include a backweb having a backweb thickness between 6 to 10 mils, an overall thickness of between 25 to 65 mils, and a rib base width of between 20 to 35 mils. The automotive-sized separator layers also have an extraction time of between 45 to 75 seconds, thereby providing an overall extraction time of less than a standard deep cycle battery separator. 1. A multilayer deep cycle battery separator.2. The multilayer deep cycle battery separator of comprising at least two layers of an automotive-sized battery separator connected or bonded or welded together.3. The multilayer deep cycle battery separator of comprising two layers of automotive-sized separator.4. The multilayer deep cycle battery separator of wherein said automotive-sized battery separator layers comprise:a backweb having a backweb thickness of between 5 and 10 mils, an overall thickness of between 25 and 65 mils, anda rib having a rib base width of between 20 and 35 mils.5. The multilayer deep cycle battery separator of wherein said automotive-sized battery separator layers have an extraction time of between 45 to 75 seconds.6. The multilayer deep cycle battery separator of wherein said automotive-sized battery separator layers are selected from the group consisting of: a PE separator; a PVC separator; a rubber separator; a phenolic resin separator; a PP separator; a cellulosic materials separator; and combinations thereof.7. The multilayer deep cycle battery separator of wherein said automotive-sized battery separator layers comprise at least one layer of PE separator.8. The multilayer deep cycle battery separator of wherein said automotive-sized battery separator layers comprise two layers of PE separators.9. The multilayer deep cycle battery separator of wherein said layers of automotive-sized separator are welded together.10. The ...

FLEXIBLE PVDF POLYMERS

The present invention pertains to vinylidene fluoride copolymers having improved flexibility, said copolymers comprising recurring units derived from hydrophilic (meth)acrylic monomers and from perhalogenated monomers, to a process for the manufacture of said copolymers, and to their use in applications where outstanding flexibility is required. 2. The polymer (F) according to wherein the at least one hydrophilic (meth)acrylic monomers (MA) of formula (I) is selected from the group consisting of acrylic acid (AA) claim 1 , (meth)acrylic acid claim 1 , hydroxyethyl(meth)acrylate (HEA) claim 1 , 2-hydroxypropyl acrylate (HPA) claim 1 , hydroxyethylhexyl(meth)acrylate claim 1 , and mixtures thereof.3. The polymer (F) according to wherein the perhalogenated monomer (FM) is selected from the group consisting of chlorotrifluoroethylene (CTFE) claim 1 , hexafluoropropylene (HFP) and tetrafluoroethylene (TFE).5. The polymer (F) according to that is a terpolymer VDF-AA-HFP.6. The polymer (F) according to having intrinsic viscosity claim 1 , measured in dimethylformamide at 25° C. claim 1 , lower than 0.70 l/g.7. The polymer (F) according to having intrinsic viscosity claim 6 , measured in dimethylformamide at 25° C. claim 6 , that is comprised between 0.35 l/g and 0.45 l/g.8. The polymer (F) according to claim 1 , wherein the at least one hydrophilic (meth)acrylic monomer (MA) is comprised in an amount of from 0.3 to 1.0% by moles with respect to the total moles of recurring units of polymer (F) claim 1 , and the at least one perhalogenated monomer (FM) is comprised in an amount of from 1.0 to 4.0% by moles with respect to the total moles of recurring units of polymer (F).9. A polymer (F) according to in the form of a film.10. A film of polymer (F) according to having a thickness of from 5 to 500 micrometers.11. A process for the preparation of the film of polymer (F) according to claim 9 , said process comprising casting a polymer (F).12. A process for the preparation of ...

ELECTRODE ASSEMBLY MANUFACTURING METHOD, ELECTRODE ASSEMBLY, AND ELECTROCHEMICAL DEVICE INCLUDING THE SAME

Disclosed is an electrode assembly manufacturing method, in which, in a step of stacking and pressing electrodes and a separator, the pressing is performed in that state in which pores of a porous substrate are filled with a polymer solution. The form or volume of the pores is not changed due to the polymer solution. Consequently, porosity of the separator after manufacture of an electrode assembly is similar to porosity of the separator before stacking. As a result, a battery including the electrode assembly has high ionic conductivity and excellent performance. 1. An electrode assembly manufacturing method comprising:1) dissolving a polymer soluble in an electrolytic solution in a solvent to form a polymer solution;2) filling pores of a porous substrate to be used as a separator with the polymer solution of step 1) to form a separator;3) manufacturing a stack comprising the separator of step 2) and at least one electrode by pressing;4) injecting a primary electrolytic solution into the stack of step 3) to discharge the polymer solution in the pores of the separator to an outside of the stack; and5) injecting a secondary electrolytic solution into the stack of step 4).2. The electrode assembly manufacturing method according to claim 1 , wherein the solvent of step 1) is not an electrolytic solution.3. The electrode assembly manufacturing method according to claim 1 , wherein filling the pores of the porous substrate with the polymer solution of step 2) comprises applying the polymer solution to the porous substrate or impregnating the porous substrate with the polymer solution.4. The electrode assembly manufacturing method according to claim 1 , further comprising drying the separator after step 2).5. The electrode assembly manufacturing method according to claim 1 , further comprising further coating at least one surface of the separator after step 2).6. The electrode assembly manufacturing method according to claim 1 , wherein the stack comprises a heat ...

SEPARATOR INCLUDING FLAME RETARDANT LAYER AND METHOD OF MANUFACTURING THE SAME

Disclosed is a separator including a flame retardant layer between a porous substrate and a coating layer. The coating layer includes an inorganic material on at least one surface of the porous substrate. A flame retardant layer is disposed between the porous substrate and the coating layer, whereby it is possible to obtain a rapid and accurate flame retardation effect. 1. A separator , comprising:a porous substrate;a coating layer comprising an inorganic material on at least one surface of the porous substrate; anda flame retardant layer between the porous substrate and the coating layer.2. The separator according to claim 1 , wherein the flame retardant layer comprises an organic flame retardant material.3. The separator according to claim 2 , wherein the organic flame retardant material forms a solid or a liquid when temperature increases to form a barrier film claim 2 , wherein the barrier film prevents an inflammable material from coming into contact with gas comprising oxygen.4. The separator according to claim 2 , wherein the organic flame retardant material is at least one of a phosphorus-containing flame retardant material or a nitrogen-containing flame retardant material.5. The separator according to claim 1 , wherein the inorganic material comprises at least one of a metal oxide claim 1 , a metal hydrate claim 1 , or a metal hydroxide.6. The separator according to claim 1 , wherein the flame retardant layer is present on one surface or opposite surfaces of the porous substrate.7. The separator according to claim 1 , wherein the coating layer is present on opposite surfaces of the porous substrate.8. The separator according to claim 1 , wherein the flame retardant layer further comprises a flame retardant synergist.9. The separator according to claim 8 , wherein the flame retardant synergist comprises at least one of a silicon-containing additive claim 8 , zinc oxide claim 8 , tin oxide claim 8 , a nickel compound claim 8 , zinc borate claim 8 , a melamine ...

SEPARATOR, FOR ELECTROCHEMICAL DEVICE, COMPRISING HEAT-RESISTANT LAYER AND SECONDARY BATTERY COMPRISING SAME

Disclosed is a method for manufacturing a separator including a heat resistant layer containing a ceramic material. The ceramic material is derived from a ceramic precursor. The method for manufacturing a separator has high convenience of processing, since the ceramic precursor can be converted into an inorganic material at a temperature lower than the melting point of the binder. In addition, the separator obtained by the method includes a heat resistant layer in which inorganic particles are not localized, locally distributed or agglomerated, and the ceramic material converted from the ceramic precursor is distributed homogeneously throughout the whole heat resistant layer. Further, there is no limitation in thickness of the heat resistant layer resulting from the particle size of the inorganic particles, and thus it is possible to form the heat resistant layer in the form of a thin film with ease. 1. A method for manufacturing a separator for an electrochemical device , the separator comprising: a heat resistant layer ,wherein the heat resistant layer is formed by the steps of:applying a slurry comprising a ceramic precursor and a binder resin to at least one surface of a support member to form a coated support member,drying the coated support member, andperforming a pore forming process comprising at least one step selected from allowing the coated support member to stand under a humidified condition or dipping the coated support member in a non-solvent, before drying the coated support member.2. The method for manufacturing the separator for the electrochemical device according to claim 1 , wherein the ceramic precursor comprises at least one selected from polysilazane claim 1 , polycarbosilane claim 1 , polysiloxane claim 1 , aluminum amide claim 1 , polyborazine or polytitanium imide.4. The method for manufacturing the separator for the electrochemical device according to claim 1 , wherein the binder resin comprises a polyvinylidene fluoride-based polymer ...

LITHIUM REPLENISHING DIAPHRAGM AND PREPARATION METHOD FOR LITHIUM REPLENISHING DIAPHRAGM

The present invention discloses a lithium replenishing diaphragm and a preparation method for the lithium replenishing diaphragm in the technical field of lithium batteries. The lithium replenishing diaphragm comprises in mass percentage: 50-60% of a halogen high-molecular polymer base material, 5-10% of a toughening agent, 5-10% of a flame retardant, and 20-40% of a lithium salt. During the preparation process, the proportioned raw materials are uniformly mixed and placed in a feeding device of a film blowing machine, a film is formed by means of film blowing of the film blowing machine, the film is baked in a drying oven and then wound, and the final lithium replenishing diaphragm is obtained. The present invention solves the defects of high cost, poor heat resistance and poor tensile strength of a diaphragm in the prior art, which can not only greatly reduce the corresponding cost, but also ensure a better thermal stability and a higher toughness of a final product. 1. A lithium replenishing diaphragm , the raw materials of which comprises a halogen high-molecular polymer base material , a toughening agent , a flame retardant , and a lithium salt , wherein:the halogen high-molecular polymer base material accounts for 50-60%, the toughening agent accounts for 5-10%, the flame retardant accounts for 5-10%, and the lithium salt accounts for 20-40%.2. The lithium replenishing diaphragm according to claim 1 , wherein the lithium replenishing diaphragm claim 1 , when immersed in an electrolyte claim 1 , has a porosity of 80-90% claim 1 , and the average diameter of each pore is 30-60 nm.3. The lithium replenishing diaphragm according to claim 1 , wherein the halogen high-molecular polymer base material comprises one or more of a chlorinated high-molecular polymer claim 1 , a brominated high-molecular polymer and a fluorinated high-molecular polymer.4. The lithium replenishing diaphragm according to claim 1 , wherein the toughening agent comprises an ethylene-vinyl ...

Separator for secondary battery and secondary battery including the same

A separator includes an inorganic coating layer including an inorganic oxide filler and a binder having a core-shell particle structure mixed therein and coated on one surface or both surfaces of the separator. A nonaqueous lithium secondary battery includes: a positive electrode; a negative electrode on the positive electrode; and the separator between the positive electrode and the negative electrode.

Composite film, production thereof, and use thereof in a solid-state electrochemical cell

A composite film ( 1 ) comprising a composition comprising at least one solid electrolyte and at least one binder, wherein the fraction of binder in the composition increases with decreasing distance from the margins ( 30, 31 ) of the composite film ( 1 ). Also a method for producing a composite film ( 1 ) of this kind, to the use thereof, and also a solid-state electrochemical cell comprising a composite film ( 1 ) of this kind.

Electrochemical devices and methods of making and use thereof

Disclosed herein are electrochemical devices and methods of making and use thereof. The electrochemical devices comprise a coated electrode comprising a first electrode and a porous separator layer, wherein the porous separator layer comprises a plurality of electrically insulating particles and a plurality of pores, wherein the porous separator layer is coated on the first electrode; a second electrode; and an electrolyte; wherein the coated electrode is in contact with the second electrode such that the porous separator layer is disposed between the first electrode and the second electrode and the porous separator layer is in contact with the first electrode and the second electrode, thereby forming an electrode assembly; and wherein the electrolyte is in electrochemical contact with the first electrode and the second electrode.

VINYLIDENE FLUORIDE COPOLYMER PARTICLES AND USE THEREOF

Provided is a vinylidene fluoride copolymer particle which is capable of efficiently exhibiting high adhesion between an electrode and a separator. The vinylidene fluoride copolymer particle of the present invention comprises vinylidene fluoride; and 1. A vinylidene fluoride copolymer particle , comprising:a constituent unit derived from vinylidene fluoride; anda constituent unit derived from a compound having an oxygen atom-containing functional group;wherein a ratio of oxygen atom of the vinylidene fluoride copolymer in a surface of the vinylidene fluoride copolymer particle is higher than a ratio of oxygen atom of the vinylidene fluoride copolymer in the vinylidene fluoride copolymer particle other than the surface thereof.2. The vinylidene fluoride copolymer particle according to claim 1 , wherein the ratio of oxygen atom is 9 at % or more in all elements presented in the surface as determined by XPS (X-ray photoelectron spectroscopy) measurement.3. The vinylidene fluoride copolymer particle according to claim 1 , wherein the oxygen atom-containing functional group is a carboxyl group or a carboxylate.6. The vinylidene fluoride copolymer particle according to claim 1 , further comprising a constituent unit derived from a fluorinated alkyl vinyl compound.7. A dispersion comprising the vinylidene fluoride copolymer particle described in and a dispersion medium.8. A coating composition for forming a fluororesin layer provided on at least one surface of a separator provided between a negative electrode layer and a positive electrode layer in a secondary battery claim 1 , the coating composition comprising the vinylidene fluoride copolymer particle described in .9. The coating composition according to claim 8 , further comprising a thickener.10. The coating composition according to or claim 8 , further comprising a filler.11. A separator claim 8 , comprising a fluororesin layer formed from the coating composition described in claim 8 , the fluororesin layer being ...

Secondary battery

Provided is a secondary battery that has a wound electrode assembly that has been precisely wound. A secondary battery is provided with a wound electrode assembly in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween, and is provided with a battery case that houses the wound electrode assembly. The separator has a strip-shaped base material layer and has a surface layer formed on the surface of the base material layer and having a mesh structure formed of polyvinylidene fluoride. The separator is positioned to the outside of a negative electrode trailing end of the negative electrode plate, and the distance between the negative electrode trailing end and a separator trailing end of the separator is not more than 30 mm.

ELECTRODE GROUP, SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SUPPLY

An electrode group includes a negative electrode, a positive electrode and a separator. The negative electrode includes a negative electrode active material-containing layer and a mesh negative electrode current collector. The positive electrode includes a positive electrode active material-containing layer. The separator includes a composite membrane containing inorganic solid particles and a polymer material. At least one of a first polymer material constituting the negative electrode active material-containing layer is the same as a second polymer material. A ratio a/b of denseness a and denseness b is greater than 1.05. A peeling strength σ1 is greater than a peeling strength σ2. An air permeability coefficient of a joined body of the composite membrane and the negative electrode is 1×10mor more and 1×10mor less. 1. An electrode group , comprising:a negative electrode that includes a negative electrode active material-containing layer and a mesh negative electrode current collector, at least a part of the mesh negative electrode current collector existing inside the negative electrode active material-containing layer;a positive electrode including a positive electrode active material-containing layer; anda separator including a composite membrane having a first surface joined to the negative electrode active material-containing layer and a second surface joined to the positive electrode active material-containing layer,wherein the negative electrode active material-containing layer contains a first polymer material,the composite membrane contains inorganic solid particles and a second polymer material,{'b': 1', '2, 'sup': −19', '2', '−15', '2, 'at least one of the first polymer material constituting the negative electrode active material-containing layer is the same as the second polymer material constituting the composite membrane, a ratio a/b of a denseness a of 20% of the composite membrane from the second surface toward the first surface and a denseness b of ...

SEPARATOR HAVING HEAT RESISTANT LAYER FOR ELECTROCHEMICAL DEVICE AND SECONDARY BATTERY COMPRISING SAME

The separator according to the present disclosure and the electrochemical device including the same show low internal resistance between the separator and an electrode. The separator includes heat resistant particles in a heat resistant coating layer. The heat resistant particles include a particle-shaped inorganic material and fluorine (F) doped to a surface of the inorganic particles. When the internal temperature of a battery is increased during the operation of the battery, the separator shows improved heat resistance by virtue of an endothermic effect derived from a phase change of the heat resistant particles. In addition, decomposition of a lithium salt used as an ingredient of electrolyte is inhibited by the fluorine atoms introduced to the heat resistant particles, resulting in improvement of ion conductivity and resistance characteristics. Further, the separator including the heat resistant particles introduced thereto has excellent resistance characteristics and shows high oxidation stability of an electrolyte, resulting in improvement of the electrochemical stability of a battery. 1. A separator for an electrochemical device , comprising:a porous polymer substrate, anda heat resistant coating layer on at least one surface of the porous polymer substrate,wherein the heat resistant coating layer comprises heat resistant particles, and the heat resistant particles comprise a particle-shaped inorganic material, and fluorine (F) atoms doped to a surface of the particle-shaped inorganic material.2. The separator for the electrochemical device according to claim 1 , wherein the particle-shaped inorganic material is stable against oxidation and/or reduction in a range of operating voltage of an electrochemical device.3. The separator for the electrochemical device according to claim 1 , wherein the heat resistant particles comprise at least one of alumina (AlO) claim 1 , aluminum hydroxide (Al(OH)) claim 1 , boehmite (AlOOH) claim 1 , Mg(OH)or B(OH) claim 1 , ...

METHOD FOR MANUFACTURING SEPARATOR, SEPARATOR FORMED THEREBY, AND ELECTROCHEMICAL DEVICE INCLUDING SAME

A method for manufacturing a separator, including the steps of: (S1) preparing a pre-dispersion including inorganic particles dispersed in a pre-dispersion solvent and a first binder polymer dissolved in the pre-dispersion solvent; (S2) conducting a preliminary milling of the pre-dispersion; (S3) preparing a binder polymer solution including a second binder polymer dissolved in a binder polymer solution solvent; (S4) mixing the pre-dispersion with the binder polymer solution and carrying out a secondary milling to obtain a slurry for forming a porous coating layer; and (S5) applying the slurry to at least one surface of a porous polymer substrate, followed by drying, is disclosed. A separator obtained by the method and an electrochemical device including the same are also disclosed. According to the present disclosure, it is possible to provide a separator having a uniform surface and showing improved adhesion. 1. A method for manufacturing a separator , comprising the steps of:(S1) preparing a pre-dispersion comprising inorganic particles dispersed in a pre-dispersion solvent and a first binder polymer dissolved in the pre-dispersion solvent;(S2) conducting a preliminary milling of the pre-dispersion;(S3) preparing a binder polymer solution comprising a second binder polymer dissolved in a binder polymer solution solvent, wherein a weight ratio of the first binder polymer to the second binder polymer is 0.5:99.5-10:90;(S4) mixing the pre-dispersion with the binder polymer solution and carrying out a secondary milling to obtain a slurry for forming a porous coating layer, wherein a time of the secondary milling is 30-99% of a sum of a time of the preliminary milling with the time of the secondary milling; and(S5) applying the slurry to at least one surface of a porous polymer substrate, followed by drying.2. The method for preparing a separator according to claim 1 , wherein the sum of the time of the preliminary milling with the time of the secondary milling is 2-6 ...

SEPARATOR FILM CONVEYANCE DEVICE FOR NONAQUEOUS ELECTROLYTIC-SOLUTION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SEPARATOR FILM FOR NONAQUEOUS ELECTROLYTIC-SOLUTION SECONDARY BATTERY

A nonaqueous electrolyte secondary battery separator film transfer device is provided which realizes a foreign object removing technique that is less likely to cause defects in a separator. The device includes a magnet bar which is arranged in a transfer path and generates a magnetic field for removing, from a separator film being transferred, a magnetic substance adhering to a first surface of the separator film; and an air cylinder which allows a distance to the magnet bar from the first surface of the separator film to be variable. 1. A nonaqueous electrolyte secondary battery separator film transfer device comprising:a transfer path through which a nonaqueous electrolyte secondary battery separator film is transferred;a first magnetic field generation source which is arranged in the transfer path and generates a magnetic field for removing, from the separator film being transferred, a magnetic substance adhering to a first surface of the separator film; anda movement mechanism which allows a distance to the first magnetic field generation source from the first surface of the separator film to be variable.2. (canceled)3. The nonaqueous electrolyte secondary battery separator film transfer device as set forth in claim 1 , wherein the movement mechanism is a rotation mechanism which moves the first magnetic field generation source by rotational motion about a rotation shaft which is parallel to a surface of the separator film.4. The nonaqueous electrolyte secondary battery separator film transfer device as set forth in claim 3 , further comprising:a second magnetic field generation source which is arranged in the transfer path and generates a magnetic field for removing, from the separator film being transferred, a magnetic substance adhering to a second surface of the separator film,the rotation mechanism causing the first and second magnetic field generation sources to be rotated in an integrated manner.5. (canceled)6. The nonaqueous electrolyte secondary battery ...

LITHIUM ION BATTERY SEPARATOR

The invention relates to a separator for non-aqueous-type electrochemical devices that has been coated with a polymer binder composition having polymer particles of two different sizes, one fraction of the polymer particles with a weight average particle size of less than 1.5 micron, and the other fraction of the polymer particles with a weight average particle size of greater than 1.5 microns. The bi-modal polymer particles provide an uneven coating surface that creates voids between the separator and adjoining electrodes, allowing for expansion of the battery components during the charging and discharging cycle, with little or no increase in the size of the battery itself. The bi-modal polymer coating can be used in non-aqueous-type electrochemical devices, such as batteries and electric double layer capacitors. 1. A porous separator for an electrochemical device , having directly coated thereon a dried coating composition having an uneven surface , wherein said dried coating composition comprises:a) discrete polymer particles of at least two different weight average particle sizes, one smaller polymer particle fraction having an average particle size of less than 1.5 micron, the other larger polymer particle fraction having a weight average particle size of greater than 1.5 microns; wherein said large and small polymer particles are each independently selected from the group consisting of fluoropolymers, polyamides, polyether ether ketone, polyether ketone ketone, polyesters, and poly(meth)acrylates, andb) optionally inorganic, electrochemically stable particles.2. The porous separator of claim 1 , wherein the smaller polymer particle fraction has an average particle size of less than 1.0 micron claim 1 , the other larger polymer particle fraction has a weight average particle size of greater than 2.0 microns.3. The porous separator of claim 1 , wherein the ratio of the less than 1.5 micron particles to the greater than 1.5 micron particles is at least 1:1.4. The ...

SEPARATOR FOR LITHIUM SECONDARY BATTERY, MANUFACTURING METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY INCLUDING SAME

This application relates to a separator for a lithium secondary battery, a method for manufacturing a separator for a lithium secondary battery, and a lithium secondary battery including same. The separator includes a porous substrate, a heat resistant layer positioned on at least one surface of the porous substrate and including inorganic particles, and a first adhesive layer positioned on the heat resistant layer and including a first organic polymer. The heat resistant layer includes the inorganic particles of 90 wt % to 99 wt % on the basis of total weight, the thickness of the heat resistant layer is 3.5 μm to 7 μm, and the thickness of the first adhesive layer is 0.5 μm to 3.0 μm. 1. A separator for a lithium secondary battery , comprising:a porous substrate;a heat resistant layer disposed on at least one surface of the porous substrate, and including inorganic particles; anda first adhesive layer disposed on the heat resistant layer and including a first organic polymer,wherein the heat resistant layer includes 90 wt % to 99 wt % of the inorganic particles relative to a total weight of the heat resistant layer,wherein a thickness of the heat resistant layer is 3.5 μm to 7 μm, andwherein a thickness of the first adhesive layer is 0.5 μm to 3.0 μm.2. The separator of claim 1 , wherein the first adhesive layer has a surface roughness of 0.1 μm to 1.0 μm.3. The separator of claim 1 , wherein:a surface roughness of an interface formed between the heat resistant layer and the first adhesive layer is 1.0 μm to 4.0 μm, anda surface roughness of one surface of the first adhesive layer exposed to the outside is 0.1 μm to 1.0 μm.4. The separator of claim 1 , wherein the heat resistant layer further comprises a water-soluble polymer binder.5. The separator of claim 4 , wherein the water-soluble polymer binder comprises an acryl-based binder claim 4 , a cellulose-based binder claim 4 , a vinylidenefluoride-based binder claim 4 , or a combination thereof.6. The separator ...

Separator and energy storage device

A separator includes a porous substrate, and a porous layer arranged on a surface of the porous substrate. The porous layer comprises inorganic particles and a binder, and a ratio of Dv90 of the inorganic particles to the thickness of the porous layer is in a range from 0.3 to 3.0. Excellent adhesion exists between the separator and the electrode according to the present application, which ensures that the energy storage device has good safety performance. Moreover, the rate performance and cycle performance of the energy storage device can be greatly improved due to the existence of inorganic particles in the separator.

Separator and electrochemical device

A separator including a porous substrate and a porous layer. The porous layer is disposed on a surface of the porous substrate and includes inorganic particles and a binder. The porous substrate has an absolute plastic deformation rate in a first direction ranging from about 40% to about 1800%. By using the separator provided in the present application, the safety performance of lithium ion batteries is improved.