Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that can cause a battery component including the functional layer to display a balance of both high blocking resistance and high process adhesiveness. The composition for a non-aqueous secondary battery functional layer contains a particulate polymer having a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The core portion is formed by a polymer A and the shell portion is formed by a polymer B including not less than 1 mass % and not more than 20 mass % of a cyano group-containing monomer unit.

Abstract: A composition for a non-aqueous secondary battery functional layer including a particulate polymer, wherein the particulate polymer is a copolymer containing 20% by weight or more and 80% by weight or less of an aromatic monovinyl monomer unit; and 0.01% by weight or more and 2% by weight or less of a polyvalent ethylenically unsaturated crosslinkable monomer unit, a volume-average particle diameter D of the particulate polymer is 0.5 ?m or more and 5 ?m or less, and a swelling degree of the particulate polymer to an electrolyte solution is more than 1 time and 3 times or less; and a non-aqueous secondary battery including the same.

Abstract: A conductive film contains a carbon material, a polymeric compound, and alkali metal atoms. The content of the polymeric compound is not less than 5 mass % and not more than 40 mass %, and the content of the alkali metal atoms is not less than 5.0 mass % and not more than 15.0 mass %.

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer that inhibits cissing in thin film application and enables formation of a functional layer that does not excessively increase the amount of metal deposited on an electrode during secondary battery charging. The composition for a functional layer contains organic particles, a binder, a wetting agent, and water. Content of the wetting agent is more than 1 part by mass and not more than 5 parts by mass per 100 parts by mass of the organic particles.

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that can cause a battery member for a non-aqueous secondary battery to display a balance of both high blocking resistance and high process adhesiveness. The composition for a non-aqueous secondary battery functional layer contains a particulate polymer having a core-shell structure including a core portion and a shell portion covering at least a portion of an outer surface of the core portion. The core portion is formed of a polymer A and the shell portion is formed of a polymer B including not less than 1 mol % and not more than 30 mol % of a sulfo group-containing monomer unit.

Abstract: A composition for a non-aqueous secondary battery porous membrane including inorganic particles and a particulate polymer, wherein a volume-average particle diameter d0 of the inorganic particles is 0.1 ?m or more and 1.0 ?m or less, a weight ratio between the inorganic particles and the particulate polymer is within a range of 95:5 to 50:50, and a volume-average particle diameter d1 of the particulate polymer and the volume-average particle diameter d0 of the inorganic particles satisfy d1/d0>1; and a non-aqueous secondary battery including the same.

Abstract: Provided is a functional layer for a non-aqueous secondary battery having reduced water content and excellent heat resistance and adhesiveness. The functional layer for a non-aqueous secondary battery contains a heat resistant resin and an acidic group-containing polymer. The percentage content of chlorine atoms in the functional layer for a non-aqueous secondary battery as measured by combustion ion chromatography is not less than 0.001 mass % and not more than 2.000 mass %.

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that can cause a battery component including the functional layer to display a balance of both high blocking resistance and high process adhesiveness. The composition for a non-aqueous secondary battery functional layer contains a particulate polymer having a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The core portion is formed by a polymer A and the shell portion is formed by a polymer B including not less than 1 mass % and not more than 20 mass % of a cyano group-containing monomer unit.

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer that inhibits cissing in thin film application and enables formation of a functional layer that does not excessively increase the amount of metal deposited on an electrode during secondary battery charging. The composition for a functional layer contains organic particles, a binder, a wetting agent, and water. Content of the wetting agent is more than 1 part by mass and not more than 5 parts by mass per 100 parts by mass of the organic particles.

Abstract: A composition for a non-aqueous secondary battery porous membrane including inorganic particles and a particulate polymer, wherein a volume-average particle diameter d0 of the inorganic particles is 0.1 ?m or more and 1.0 ?m or less, a weight ratio between the inorganic particles and the particulate polymer is within a range of 95:5 to 50:50, and a volume-average particle diameter d1 of the particulate polymer and the volume-average particle diameter d0 of the inorganic particles satisfy d1/d0>1; and a non-aqueous secondary battery including the same.

Abstract: A composition for a non-aqueous secondary battery functional layer including a particulate polymer, wherein the particulate polymer is a copolymer containing 20% by weight or more and 80% by weight or less of an aromatic monovinyl monomer unit; and 0.01% by weight or more and 2% by weight or less of a polyvalent ethylenically unsaturated crosslinkable monomer unit, a volume-average particle diameter D of the particulate polymer is 0.5 ?m or more and 5 ?m or less, and a swelling degree of the particulate polymer to an electrolyte solution is more than 1 time and 3 times or less; and a non-aqueous secondary battery including the same.

Abstract: Provided is a functional layer for a non-aqueous secondary battery having reduced water content and excellent heat resistance and adhesiveness. The functional layer for a non-aqueous secondary battery contains a heat resistant resin and an acidic group-containing polymer. The percentage content of chlorine atoms in the functional layer for a non-aqueous secondary battery as measured by combustion ion chromatography is not less than 0.001 mass % and not more than 2.000 mass %.

Abstract: A slurry for a lithium ion secondary battery positive electrodes contains a positive electrode active material, a binder, a conductive material, and an organic solvent. The binder contains a nitrile group-containing acrylic polymer and a fluorine-containing polymer; and the viscosity ratio ((viscosity at a shear rate of 2 sec?1)/(viscosity at a shear rate of 20 sec?1)) of this slurry as measured by a coaxial double cylinder viscometer is 1.0-2.5. Positive electrodes produced using the slurry have excellent weight accuracy, and lithium ion secondary batteries produced with positive electrodes produced from the slurry have a high capacity and excellent cycle characteristics at high potentials. The produced lithium ion secondary battery is flexible and free from the occurrence of cracks in an active material layer when bent.

Abstract: Provided is a binder composition for a lithium ion secondary battery positive electrode that can suppress expansion of a positive electrode. The disclosed binder composition for a lithium ion secondary battery positive electrode includes a copolymer containing a nitrile group-containing monomer unit and a conjugated diene monomer unit and a solvent. A degree of swelling in electrolysis solution of the copolymer is at least 200 mass % and no greater than 700 mass % and a storage elastic modulus of a binder coating obtained through film formation of the binder composition is at least 1×104 and no greater than 1×109 Pa.

Abstract: Provided is a binder composition for a lithium ion secondary battery positive electrode that can suppress expansion of a positive electrode. The disclosed binder composition for a lithium ion secondary battery positive electrode includes a copolymer containing a nitrile group-containing monomer unit and a conjugated diene monomer unit and a solvent. A degree of swelling in electrolysis solution of the copolymer is at least 200 mass % and no greater than 700 mass % and a storage elastic modulus of a binder coating obtained through film formation of the binder composition is at least 1×104 and no greater than 1×109 Pa.

Abstract: The disclosed binder composition for the positive electrode of a lithium ion secondary battery includes a binder and an organic dispersion medium, a weight-average molecular weight of the binder being from 100,000 to 2,000,000, and the binder containing 10% to 35% by mass of an ethylenically unsaturated monomer unit containing an acid group, and includes 0.6 to 1.5 equivalents of lithium with respect to the acid group. The disclosed slurry composition for the positive electrode of a lithium ion secondary battery includes this binder composition, a positive electrode active material, and a conductive material.

Abstract: The disclosed binder composition for the positive electrode of a lithium ion secondary battery includes a binder and an organic dispersion medium, a weight-average molecular weight of the binder being from 100,000 to 2,000,000, and the binder containing 10% to 35% by mass of an ethylenically unsaturated monomer unit containing an acid group, and includes 0.6 to 1.5 equivalents of lithium with respect to the acid group. The disclosed slurry composition for the positive electrode of a lithium ion secondary battery includes this binder composition, a positive electrode active material, and a conductive material.

Abstract: To provide a slurry for positive electrodes having excellent weight accuracy at the time of application, which enables the production of a lithium ion secondary battery that has high capacity and excellent cycle characteristics at high potentials, said lithium ion secondary battery being flexible and free from the occurrence of cracks in an active material layer when bent. [Solution] A slurry for lithium ion secondary battery positive electrodes according to the present invention contains a positive electrode active material, a binder, a conductive material and an organic solvent. The binder contains a nitrile group-containing acrylic polymer and a fluorine-containing polymer; and the viscosity ratio ((viscosity at a shear rate of 2 sec?1)/(viscosity at a shear rate of 20 sec?1)) of this slurry as measured by a coaxial double cylinder viscometer is 1.0-2.5.

Abstract: Disclosed is a negative electrode active material for a lithium ion secondary battery, which is capable of further improving the charge/discharge cycle characteristics. Also disclosed is a lithium ion secondary battery which uses the negative electrode active material for a lithium ion secondary battery. The negative electrode active material for a lithium ion secondary battery is composed of composite particles each of which has a core/shell structure configured of a core part that is formed from a polymer and a shell part that is formed of a metal layer. The metal layer of the shell part is formed by metal plating. Preferably, the metal layer comprises at least a metal layer (a1) that is formed by electroless plating and a metal layer (a2) that is formed by electrolytic plating, in this order from the core part side.

Abstract: Disclosed is an electrode for a lithium-ion secondary battery which includes a porous membrane layer that is inhibited from decreasing in flexibility. The electrode for lithium-ion secondary battery comprises a current collector and, formed thereon in the following order, an electrode active-material layer comprising an electrode active material, a thickener, and a binder and a porous membrane layer containing an inorganic filler, wherein the binder is one which, when used to form a composite film comprising the binder and the thickener, forms a spherical island phase in a cross section of the composite film, the island phase having an average diameter of 0.5 ?m or larger. The binder preferably is an unsaturated carboxylic acid ester polymer having a content of alkyl acrylate monomer units of 85 mass % or higher.