Abstract: A positive electrode for a secondary battery includes a positive electrode current collector, and a positive electrode mixture layer including a positive electrode active material which includes a lithium-containing composite oxide having a layered structure, and in which 80 atom % or more of metal other than lithium is nickel, the positive electrode mixture layer includes a conductive additive containing carbon at a ratio of 1 part by mass or less relative to 100 parts by mass of the positive electrode active material, the positive electrode mixture layer has a material resistance Rm of 30 ?·cm or less, and a ratio Rm/Rc of the material resistance Rm (?·cm) of the positive electrode mixture layer relative to an interface resistance Rc (?·cm2) between the positive electrode current collector and the positive electrode mixture layer is 200 or more.

Abstract: Provided is a positive electrode for a non-aqueous electrolyte secondary battery, the positive electrode comprising: a positive electrode current collector; and a positive electrode mixture layer formed on the surface of the positive electrode current collector. The positive electrode mixture layer contains at least carbon fibers and a positive electrode active material containing a lithium-transition metal composite oxide, wherein the lithium-transition metal composite oxide has a layered rock salt structure, is substantially free of Co, and contains at least Ni, Al, and Sr.

Abstract: A positive electrode for nonaqueous electrolyte secondary batteries according to the present invention is provided with a positive electrode collector and a positive electrode mixture layer that is formed on the surface of the positive electrode collector. The positive electrode mixture layer contains at least carbon fibers and a positive electrode active material that contains a lithium transition metal composite oxide; and the lithium transition metal composite oxide has a layered rock salt structure, while containing at least Ni, Al and Ca, but not substantially containing Co.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution, wherein the positive electrode includes a composite oxide including lithium as a first metal, and a second metal X other than lithium; in the composite oxide, the second metal X includes Ni, Al, and Mn; the second metal X does not contain Co or the atomic ratio Co/X of Co to the second metal X is 0.02 or less; and the electrolyte solution contains a chain carboxylic acid ester having 2 to 4 carbon atoms, and a cyclic compound having a ring structure composed of 2 oxygen atoms and 3 to 5 carbon atoms.

Abstract: A positive electrode for a secondary battery including a positive electrode current collector, and a positive electrode mixture layer containing a positive electrode active material and disposed on a surface of the positive electrode current collector. The positive electrode mixture layer contains a first positive electrode active material having a compressive strength of 400 MPa or more, and a second positive electrode active material having a compressive strength of 250 MPa or less. When the positive electrode mixture layer is divided into a first region and a second region having the same thickness, the first positive electrode active material is contained more in the first region than in the second region, and the second positive electrode active material is contained more in the second region than in the first region.

Abstract: A positive electrode for a secondary battery includes a positive electrode current collector, and a positive electrode mixture layer containing a positive electrode active material and provided on a surface of the positive electrode current collector, wherein the positive electrode active material contains a lithium-containing composite oxide which has a layered structure, and in the lithium-containing composite oxide, nickel occupies 80 atom % or more of a metal other than lithium, and the positive electrode mixture layer has a carbon fiber having an outermost diameter of 5 nm or less, and the carbon fiber is contained by 0.1 parts by mass or less relative to 100 parts by mass of the positive electrode active material.

Abstract: A positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the current collector. The positive electrode mixture layer includes a lithium transition metal composite oxide containing 50 mol % or more Ni relative to the total number of moles of metal element or elements except Li, a conductive carbon material, and an adhesion improver capable of attaching to the lithium transition metal composite oxide and the carbon material. The adhesion improver contains a Lewis acidic group, a Lewis basic group, and an aromatic ring-containing hydrophobic group.

Abstract: A positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the current collector. The positive electrode mixture layer includes a lithium transition metal composite oxide containing 50 mol % or more Ni relative to the total number of moles of metal element or elements except Li, a conductive carbon material, and an adhesion improver capable of attaching to the lithium transition metal composite oxide and the carbon material. The adhesion improver contains a Lewis acidic group, a Lewis basic group, and an aromatic ring-containing hydrophobic group.

Abstract: This positive electrode for nonaqueous electrolyte secondary batteries is provided with a collector and a mixture layer that is formed on the collector. The mixture layer comprises: a lithium transition metal oxide that contains more than 50% by mole of Ni relative to the total number of moles of metal elements other than Li; a carbon material; a polymer compound that is soluble in N-methyl-2-pyrrolidone, while having a ring structure in each repeating unit; and a polyoxyethylene amine compound.

Abstract: A positive electrode for non-aqueous electrolyte secondary batteries has a mix layer which contains composite oxide particles each containing Ni, Co and Li and also contains Mn and/or Al, a conductive material, and poly(vinyl alcohol) having a saponification degree of 85% or less. In the composite oxide particles, the content of Ni relative to the total number of moles of metal elements other than Li is 50 mol % or more, and the ratio of the BET specific surface area A (m2/g) to the theoretical specific surface area B (m2/g) as determined in accordance with the below-mentioned formula, i.e., (A/B), is 1.0 to 4.3 exclusive.

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a solid electrolyte layer covering at least a portion of the dielectric layer. The solid electrolyte layer includes a ?-conjugated conductive polymer, a high-molecular-weight dopant having an acid group, and a water-soluble polymer. The water-soluble polymer is a copolymer including a hydrophilic monomer unit having a hydrophilic group. The hydrophilic group is at least one group selected from the group consisting of a carboxyl group, an acid anhydride group, a phenolic hydroxyl group, and a C2-3 alkylene oxide group.

Abstract: A positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the current collector. The positive electrode mixture layer includes a lithium transition metal composite oxide containing 50 mol % or more Ni relative to the total number of moles of metal element or elements except Li, a conductive carbon material, and an adhesion improver capable of attaching to the lithium transition metal composite oxide and the carbon material. The adhesion improver contains a Lewis acidic group, a Lewis basic group, and an aromatic ring-containing hydrophobic group.

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a conductive polymer layer covering at least a part of the dielectric layer. The conductive polymer layer includes a conductive polymer and a polymer dopant. The polymer dopant includes a copolymer that includes a first monomer unit and a second monomer unit. The first monomer unit has a sulfonate group. Time second monomer unit has a functional group represented by a formula (i); —CO—R1—COOH (where R1 represents an aliphatic hydrocarbon group having 1 to 8 carbon atoms, an aromatic group, or a divalent group —OR2—, R2 representing an aliphatic hydrocarbon group having 1 to 8 carbon atoms or an aromatic group).

Abstract: An electrolytic capacitor includes an anode body, a first conductive polymer layer, and a second conductive polymer layer. The anode body includes a dielectric layer. The first conductive polymer layer covers at least a part of the dielectric layer. The second conductive polymer layer covers at least a part of the first conductive polymer layer. The first conductive polymer layer includes a first conductive polymer. The second conductive polymer layer includes a second conductive polymer. At least one of the first conductive polymer layer and the second conductive polymer layer further includes a hydroxy compound. The hydroxy compound has two or more alcoholic hydroxy groups or two or more phenolic hydroxy groups, and has a melting point ranging from 40° C. to 150° C., inclusive.

Abstract: An electrolytic capacitor includes: an anode body; a dielectric layer; a first conductive polymer layer; a second conductive polymer layer; and a first intermediate layer. The dielectric layer is formed on the anode body. The first conductive polymer layer covers at least a part of the dielectric layer. The second conductive polymer layer covers at least a part of the first conductive polymer layer. The first intermediate layer is formed between the first conductive polymer layer and the second conductive polymer layer. The first intermediate layer includes both a cationic agent and an anionic agent, and the first intermediate layer has a first region and a second region, the first region facing the first conductive polymer layer, the second region facing the second conductive polymer layer. The first region contains a greater amount of the anionic agent than the second region, and the second region contains a greater amount of the cationic agent than the first region.

Abstract: An electrolytic capacitor includes an anode body, a dielectric layer formed on the anode body, and a conductive polymer layer covering at least a part of the dielectric layer. The conductive polymer layer includes a conductive polymer and a polymer dopant. The polymer dopant includes a first copolymer including: (A) a first unit derived from a first monomer having a sulfonate group; (B) a second unit derived from a second monomer having a carboxy group; and (C) a third unit derived from a third monomer having a hydroxy group.

Abstract: A conductive polymer layer of a electrolytic capacitor includes a conductive polymer and a polymer dopant. The polymer dopant includes; (A) a first unit originating from a first monomer having a polymerizable group and a sulfonate group; and (B) a second unit originating from a second monomer having a polymerizable group and a phosphorus-containing group. The phosphorus-containing group is represented by at least one of general formula (1); —P(?O)(OR1)(OR2), general formula (2); —PH(?O)(OR3), and general formula (3); —PH2(?O). In the general formulae (1) to (3), each of R1, R2 and R3 is independently a hydrogen atom, a hydrophilic group, a C1 to C3 alkyl group, or a cationic group.

Abstract: An electrolytic capacitor includes: an anode body; a dielectric layer formed on the anode body; a first conductive polymer layer covering at least a part of the dielectric layer; a second conductive polymer layer covering at least a part of the first conductive polymer layer; and an intermediate layer formed between the first conductive polymer layer and second conductive polymer layer. The intermediate layer includes a cation agent containing a cationic group, and an anion agent containing a first anionic group and a second anionic group. The first anionic group is higher in electron-withdrawing property than the second anionic group. In the intermediate layer, a total of a number of the first anionic group and a number of the second anionic group is larger than a number of the cationic group.

Abstract: An electrolytic capacitor includes an anode body having a dielectric layer, a first conductive polymer layer covering at least a part of the dielectric layer, and a second conductive polymer layer covering at least a part of the first conductive polymer layer. The first conductive polymer layer includes a first conductive polymer and a first polymer dopant having a sulfonate group. The second conductive polymer layer includes a second conductive polymer and a second polymer dopant having a sulfonate group. A polymerization degree of the first conductive polymer is lower than a polymerization degree of the second conductive polymer.

Abstract: An electrolytic capacitor includes: an anode body; a dielectric layer formed on the anode body; a first conductive polymer layer covering at least a part of the dielectric layer; and a second conductive polymer layer covering at least a part of the first conductive polymer layer. The first conductive polymer layer includes a first conductive polymer and a first dopant. The second conductive polymer layer includes a second conductive polymer, a second dopant and a polycarboxylic acid.