Abstract: A positive electrode in a lithium secondary battery includes an insulating tape that covers a welded part between a positive electrode tab and a positive electrode current collector-exposed surface. The insulating tape has a multilayer structure including an organic material layer, a composite material layer containing an organic material and an inorganic material, and an adhesive layer. The inorganic material in the composite material layer accounts for 20% or more of the weight of the composite material layer.

Abstract: According to the present invention, a positive electrode of a lithium secondary battery is provided with an insulating tape that covers an electrode tab on an exposed part. This insulating tape has a multilayer structure that is composed of an organic material layer, a composite material layer which is formed from an organic material and an inorganic material, and an adhesive layer. The inorganic material in the composite material layer accounts for 20% or more of the weight of the composite material layer; and the inorganic material contains at least one substance selected from the group consisting of metal oxides, metal nitrides, metal fluorides and metal carbides. Puncture strength is ensured by means of the organic material layer, while heat resistance is ensured by means of the composite material layer.

Abstract: A positive electrode for a nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes a positive electrode current collector mainly composed of aluminum (Al), a protective layer disposed on the positive electrode current collector, and a positive electrode mixture layer containing a lithium-containing transition metal oxide and disposed on the protective layer. The protective layer has a thickness of 1 to 5 ?m and contains an electroconductive material and an inorganic compound having an oxidation power lower than that of the lithium-containing transition metal oxide.

Abstract: A positive electrode for a nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes a positive electrode current collector mainly composed of aluminum (Al), a protective layer disposed on the positive electrode current collector, and a positive electrode mixture layer containing a lithium-containing transition metal oxide and disposed on the protective layer. The protective layer has a thickness of 1 to 5 ?m and contains an electroconductive material and an inorganic compound having an oxidation power lower than that of the lithium-containing transition metal oxide.

Abstract: A nonaqueous electrolyte secondary battery includes an insulating tape which covers at least a portion of an exposed portion of a current collector, together with at least a portion of a lead. The insulating tape has a substrate layer and a first adhesive layer, and the substrate layer has a first organic layer and a second organic layer interposed between the first organic layer and the first adhesive layer. The elastic modulus E1 of the first organic layer is lower than the elastic modulus E2 of the second organic layer.

Abstract: In a nonaqueous electrolyte secondary battery, an insulating tape which covers at least a portion of an exposed portion of a current collector, together with at least a portion of a lead, has a substrate layer and a first adhesive layer, and the substrate layer has a first organic layer and a second organic layer interposed between the first organic layer and the first adhesive layer. The elastic modulus E2 of the second organic layer is lower than the elastic modulus E1 of the first organic layer, and the melting point or thermal decomposition temperature MP1 of the first organic layer is higher than the melting point or thermal decomposition temperature MP2 of the second organic layer.

Abstract: A secondary battery includes: a positive electrode having a positive-electrode current collector and a positive-electrode active-material layer; a negative electrode having a negative-electrode current collector and a negative-electrode active-material layer; a electrolyte; and an insulating tape covering a portion of the positive electrode. Furthermore, the positive-electrode current collector has an exposed section that the positive-electrode active-material layer is not disposed. In addition, at least a portion of the exposed section is covered with the insulating tape; the insulating tape has a substrate material layer and an adhesive layer; and the adhesive layer includes an adhesive agent and an insulating inorganic material.

Abstract: A secondary battery includes a positive electrode having a positive electrode current collector and a positive electrode active material layer; a negative electrode having a negative electrode current collector and a negative electrode active material layer; a separator interposed between the electrodes; a electrolyte; a positive electrode lead; and an insulating tape that covers part of the positive electrode. The positive electrode current collector has an exposed portion connected to the positive electrode lead. The positive electrode lead has an extending portion that projects from the exposed portion and an overlapping portion that overlaps the exposed portion. At least part of the exposed portion and at least part of the overlapping portion are covered with the insulating tape. The insulating tape has a substrate layer and an adhesive layer. The substrate layer contains a polyimide. The adhesive layer has an electrical resistance of 1 k?/mm2 or more at 500° C.

Abstract: Provided is a nonaqueous electrolyte secondary battery including a nonaqueous electrolyte and an electrode assembly including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The electrode assembly further includes a layer containing a metal oxide powder between the positive electrode and the negative electrode. The positive electrode contains a phosphate ester compound represented by Formula (1); where X and Y each independently represent a metal atom, a hydrogen atom, or an organic group; at least one of X and Y represents a metal atom; X and Y are coincident when the metal atom is divalent; and n represents an integer of 2 or more and 10 or less.

Abstract: A positive electrode for nonaqueous electrolyte secondary batteries having a positive electrode current collector and a positive electrode mixture layer that is formed on the positive electrode current collector.

Abstract: A positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector and a positive electrode active substance layer formed upon the positive electrode current collector. The positive electrode active substance layer has a positive electrode active substance and a melamine-acid salt being a salt comprising melamine and acid.

Abstract: A positive electrode for nonaqueous electrolyte secondary batteries having a positive electrode current collector and a positive electrode mixture layer that is formed on the positive electrode current collector.

Abstract: A positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode current collector and a positive electrode active substance layer formed upon the positive electrode current collector. The positive electrode active substance layer has a positive electrode active substance and a melamine-acid salt being a salt comprising melamine and acid.

Abstract: A positive electrode in a lithium secondary battery includes an insulating tape that covers a welded part between a positive electrode tab and a positive electrode current collector-exposed surface. The insulating tape has a multilayer structure including an organic material layer, a composite material layer containing an organic material and an inorganic material, and an adhesive layer. The inorganic material in the composite material layer accounts for 20% or more of the weight of the composite material layer.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode that includes a positive electrode current collector, an intermediate layer on the positive electrode current collector, and a positive electrode mix layer on the intermediate layer. The intermediate layer contains a flame retardant and a conductive material having a heat conductivity of 10 W/m·K or more.

Abstract: A non-aqueous electrolyte secondary battery includes an electrode assembly including a positive electrode including a positive electrode active material layer, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein at least one of the positive electrode and the separator contains a phosphoric acid ester compound containing at least one metal element and represented by a general formula (1) (where X and Y each represent a metal element, a hydrogen atom, or an organic group; at least one of X and Y represents a metal element; when the metal element is divalent, X and Y together represent a single metal element; and n represents an integer of 2 or more and 10 or less).

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode that includes a positive electrode current collector, an intermediate layer on the positive electrode current collector, and a positive electrode mix layer on the intermediate layer. The intermediate layer contains a flame retardant and a conductive material having a heat conductivity of 10 W/m·K or more.

Abstract: A positive electrode for a nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes a positive electrode current collector mainly composed of aluminum (Al), a protective layer disposed on the positive electrode current collector, and a positive electrode mixture layer containing a lithium-containing transition metal oxide and disposed on the protective layer. The protective layer has a thickness of 1 to 5 ?m and contains an electroconductive material and an inorganic compound having an oxidation power lower than that of the lithium-containing transition metal oxide.

Abstract: A positive electrode according to an embodiment includes a positive electrode current collector, a positive electrode mixture layer disposed on the current collector, and an intermediate layer disposed between the positive electrode current collector and the positive electrode mixture layer. The intermediate layer includes particles, the particles are mainly composed of a material having a thermal conductivity of 100 W/m·K or more and a specific resistance of 103 ?·m or more, and the particles have a Vickers hardness of 5 GPa or more.

Abstract: Provided is a nonaqueous electrolyte secondary battery including a nonaqueous electrolyte and an electrode assembly including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The electrode assembly further includes a layer containing a metal oxide powder between the positive electrode and the negative electrode. The positive electrode contains a phosphate ester compound represented by Formula (1); where X and Y each independently represent a metal atom, a hydrogen atom, or an organic group; at least one of X and Y represents a metal atom; X and Y are coincident when the metal atom is divalent; and n represents an integer of 2 or more and 10 or less.