Abstract: A negative electrode material contains composite particles. Each of the composite particles contains a negative electrode active material particle and a film. The negative electrode active material particle contains a silicon oxide phase and a lithium silicate phase. The film covers a surface of the negative electrode active material particle. The film contains an anion-exchange resin. To an ion-exchange group of the anion-exchange resin, a fluoride ion is bound. The content of the anion-exchange resin in the negative electrode material is not higher than 33 mass %.

Abstract: A lithium-ion secondary battery (100) includes a wound electrode body (80), a nonaqueous electrolyte, and a box-shaped case (50). The wound electrode body includes a positive electrode (10), a negative electrode (20), and a separator (40). The box-shaped case contains the wound electrode body and the nonaqueous electrolyte. The wound electrode body includes a starting-end-side negative electrode remainder portion (22) provided in a winding-direction starting end portion (81) of the wound electrode body. The winding-direction starting end portion exists at a winding center side. The starting-end-side negative electrode remainder portion protrudes toward the winding center side along a winding direction beyond the positive electrode. A surplus nonaqueous electrolyte exists in a gap between the wound electrode body and the box-shaped case.

Abstract: The positive electrode includes a positive electrode composite layer. The negative electrode includes a negative electrode composite material layer. A whole of the positive electrode composite layer and a portion of the negative electrode composite material layer face each other with the separator being interposed therebetween. The negative electrode composite material layer includes a first region and a second region. The first region is a region that does not face the positive electrode composite layer and that extends from a position facing one end portion of the positive electrode composite layer to a point separated from the position by more than or equal to 0.1 mm and less than or equal to 10 mm. The second region is a region other than the first region. The first region includes silicon oxide doped with lithium. The second region includes silicon oxide.

Abstract: A lithium-ion secondary battery includes at least a negative electrode, a positive electrode, and an electrolyte. The negative electrode includes at least a negative electrode active material and a polymer binder. The negative electrode active material includes at least a graphitic material and a silicon oxide material. The amount of acidic functional groups per unit surface area of graphitic material is not lower than 0.017 mmol/m2 and not higher than 0.086 mmol/m2. A polymer binder contains a carboxy group. Polymer binder has a main chain with a length not smaller than 0.53 ?m and not greater than 2.13 ?m.

Abstract: A nonaqueous electrolyte secondary battery includes: a negative electrode current collector core; and a negative electrode mixture layer that is formed on the negative electrode current collector core. The negative electrode mixture layer contains a diene rubber binder. A section of the negative electrode mixture layer in a thickness direction is divided into a first region, a second region, and a third region from a negative electrode current collector core side by trisecting the negative electrode mixture layer in the thickness direction. An abundance of the diene rubber binder in the second region is greater than an abundance of the diene rubber binder in the first region. The third region contains the diene rubber binder having an oxidized carbon-carbon double bond.

Abstract: A non-aqueous electrolyte secondary battery includes at least a positive electrode active material layer, a porous film, and a negative electrode active material layer. The negative electrode active material layer contains at least a graphite-based carbon material and silicon oxide. The porous film is interposed between the positive electrode active material layer and the negative electrode active material layer. The porous film contains at least a ceramic material. The negative electrode active material layer has a first spring constant. The porous film has a second spring constant. A ratio of the second spring constant to the first spring constant is higher than 1.

Abstract: A non-aqueous electrolyte secondary battery includes a negative electrode, a positive electrode, and an electrolyte solution. The electrolyte solution contains at least one selected from the group consisting of ethylene carbonate, fluoroethylene carbonate, and vinylene carbonate. The negative electrode includes a negative electrode mixture layer. The negative electrode mixture layer contains a silicon-containing particle and a graphite particle. In a Log-differential pore volume distribution of the negative electrode mixture layer, the ratio of a Log-differential pore volume at a pore diameter of 2 ?m to a Log-differential pore volume at a pore diameter of 0.2 ?m is within a range of 10.5 to 33.1.

Abstract: The negative electrode plate includes at least a negative electrode composite material layer. The negative electrode composite material layer has a density of 1.5 g/cm3 or more. The negative electrode composite material layer contains at least first particles, second particles and a binder. The first particles contain graphite particles and an amorphous carbon material. The amorphous carbon material is coated on the surface of each graphite particle. The second particles are made of silicon oxide. The ratio of the second particles to the total amount of the first particles and the second particles is 2 mass % or more to 10 mass % or less. The negative electrode plate has a spring constant of 700 kN/mm or more to 3000 kN/mm or less.

Abstract: Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNiaCobMncO2 wherein a, b and c satisfy the following conditions: 0.35?a?0.45, 0.15?b?0.25, 0.35?c?0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNixCoyMnzO2 wherein x, y and z satisfy the following conditions: 0.35?x?0.45, 0.45?y?0.55, 0.05?z?0.

Abstract: A positive electrode and a negative electrode are stacked so as to face each other with a separator and a low spring constant film interposed therebetween. The positive electrode or the negative electrode has a first spring constant that is the lowest spring constant of the positive electrode, the negative electrode and the separator. The low spring constant film has a second spring constant. The second spring constant is lower than the first spring constant.

Abstract: An ethylene-vinyl alcohol copolymer resin composition pellet group is provided, which is excellent in long-run processability. The ethylene-vinyl alcohol copolymer resin composition pellet group is a group of pellets of an ethylene-vinyl alcohol copolymer resin composition containing an ethylene-vinyl alcohol copolymer and a divalent metal salt, wherein not greater than 3% of the pellets have a b*-value of not less than 5 after the pellets are heat-treated at 230° C. for 30 minutes.

Abstract: A negative electrode active material, a first carbon material, a thickener, and a solvent are mixed to prepare a first dispersion solution. The first dispersion solution and a second carbon material are mixed to prepare a second dispersion solution. The second dispersion solution and a binder are mixed to prepare a negative electrode paint. The negative electrode paint is applied to a surface of a negative electrode current collector and dried to produce a negative electrode for a nonaqueous electrolyte secondary battery. The negative electrode active material has a BET specific surface area of 3 m2/g or more and 8 m2/g or less. The first carbon material has a BET specific surface area of 30 m2/g or more and 100 m2/g or less. The second carbon material has a BET specific surface area of 200 m2/g or more and 500 m2/g or less.

Abstract: Disclosed is a method of manufacturing an airfoil structure. The airfoil structure includes a plurality of airfoils, a support for supporting the airfoils, and a case for covering the airfoils. Each airfoil includes an airfoil body, and an airflow generator for producing induced airflow by generating plasma. The method includes a process of forming the airflow generator that includes a first electrode forming step of forming a first electrode on the airfoil body, a dielectric layer forming step of forming a dielectric layer on the airfoil body by forming ceramic powder into a film to cover the first electrode through room temperature impact consolidation, and a second electrode forming step of forming a second electrode on a surface of the dielectric layer, such that the second electrode is electrically connected to the first electrode, and an alternating-current voltage is applied to the second electrode.

Abstract: A method of producing a lithium ion secondary battery includes preparing a case in which an electrode group including at least a positive electrode and a negative electrode is accommodated; impregnating a first electrolyte solution into the electrode group, lowering a potential of the negative electrode to a first potential, injecting FEC into a case, and lowering a potential of the negative electrode to a second potential. The negative electrode contains at least graphite and silicon oxide. The first electrolyte solution does not contain FEC. An additive has a reductive decomposition potential of 0.5 V (vs. Li+/Li) or more and 1.5 V (vs. Li+/Li) or less. The first potential is higher than 0.2 V (vs. Li+/Li) and is equal to or lower than the reductive decomposition potential. The second potential is 0.2 V (vs. Li+/Li) or less.

Abstract: A positive electrode and a negative electrode are stacked so as to face each other with a separator and a low spring constant film interposed therebetween. The positive electrode or the negative electrode has a first spring constant that is the lowest spring constant of the positive electrode, the negative electrode and the separator. The low spring constant film has a second spring constant. The second spring constant is lower than the first spring constant.

Abstract: Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNiaCobMncO2 wherein a, b and c satisfy the following conditions: 0.35?a?0.45, 0.15?b?0.25, 0.35?c?0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNixCoyMnzO2 wherein x, y and z satisfy the following conditions: 0.35?x?0.45, 0.45?y?0.55, 0.05?z?0.

Abstract: A nonaqueous electrolyte secondary battery includes a wound electrode assembly in which a positive electrode having, at its one end in a width direction, a positive electrode exposed portion provided without a positive electrode mixture layer on a positive electrode current collector and a negative electrode are wound together, with a separator interposed therebetween. The positive electrode exposed portion protrudes outward in an axial direction of the wound electrode assembly relative to the separator and the negative electrode at one end in the axial direction of the wound electrode assembly. The negative electrode exposed portion protrudes outward in the axial direction of the wound electrode assembly relative to the separator and the positive electrode at the other end in the axial direction. The positive electrode exposed portion has a cutout portion at least in an outermost circumferential portion of the positive electrode.

Abstract: A nonaqueous electrolyte secondary battery includes: a positive electrode 4 including a positive electrode current collector and a positive electrode mixture layer containing a positive electrode active material and a binder, the positive electrode mixture layer being provided on the positive electrode current collector; a negative electrode 5; a porous insulating layer 6 interposed between the positive electrode 4 and the negative electrode 5; and a nonaqueous electrolyte. The positive electrode 4 has a tensile extension percentage of equal to or higher than 3.0%. The positive electrode current collector is made of aluminum containing iron. In this manner, the tensile extension percentage of the positive electrode is increased without a decrease in capacity of the nonaqueous electrolyte secondary battery. Accordingly, even when the nonaqueous electrolyte secondary battery is destroyed by crush, occurrence of short-circuit in the nonaqueous electrolyte secondary battery can be suppressed.

Abstract: A lithium-ion secondary battery (100) includes a wound electrode body (80), a nonaqueous electrolyte, and a box-shaped case (50). The wound electrode body includes a positive electrode (10), a negative electrode (20), and a separator (40). The box-shaped case contains the wound electrode body and the nonaqueous electrolyte. The wound electrode body includes a starting-end-side negative electrode remainder portion (22) provided in a winding-direction starting end portion (81) of the wound electrode body. The winding-direction starting end portion exists at a winding center side. The starting-end-side negative electrode remainder portion protrudes toward the winding center side along a winding direction beyond the positive electrode. A surplus nonaqueous electrolyte exists in a gap between the wound electrode body and the box-shaped case.

Abstract: The present invention provides the resin composition having excellent inflation moldability by which a film having high water vapor transmission rate (WVTR) and low elastic modulus can be produced, and a film which is formed from the resin composition. The present invention relates to a resin composition comprising a polyamide resin (A) and a polyvinyl alcohol-based resin (B) which includes 2-10% by mole of structural unit represented by the following general formula (1) and has a degree of saponification of 70-90% by mole, and a film which is formed from the resin composition. [In the formula, R1 to R6 each independently represent a hydrogen atom or an organic group, and X represents a single bond or a linking chain.