Abstract: A secondary battery includes: a positive electrode current collector; a negative electrode current collector; a positive electrode electrolytic solution part provided so as to be in contact with the positive electrode current collector, the positive electrode electrolytic solution part containing a positive electrode electrolytic solution; and a negative electrode electrolytic solution part provided so as to be in contact with the negative electrode current collector, the negative electrode electrolytic solution part containing a negative electrode electrolytic solution. The positive electrode electrolytic solution contains a positive electrode active material, an electrolyte salt, and a non-aqueous solvent containing a first solvent. The negative electrode electrolytic solution contains a negative electrode active material, an electrolyte salt, and a non-aqueous solvent containing a second solvent.

Abstract: Disclosed is a member for electrochemical devices comprising a current collector, an electrode mixture layer provided on the current collector, and an electrolyte layer provided on the electrode mixture layer in this order, wherein the electrode mixture layer comprises an electrode active material, a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, calcium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less, and the electrolyte layer comprises an inorganic solid electrolyte: wherein X? represents a counter anion.

Abstract: Disclosed is a negative electrode for a secondary battery, the negative electrode including: a negative electrode current collector; and a negative electrode mixture layer provided on the negative electrode current collector. The negative electrode mixture layer contains a graphite powder and a polymer electrolyte. A powder compact spring-back ratio of the graphite powder is 15 to 35%. Furthermore, disclosed is a secondary battery including: a positive electrode; the above-described negative electrode; and an electrolyte layer provided between the positive electrode and the negative electrode. Further, disclosed is a negative electrode material for a secondary battery, the negative electrode material containing a graphite powder and a polymer electrolyte.

Abstract: Disclosed is an electrochemical device electrode comprising an electrode current collector and an electrode mixture layer provided on at least one principal surface of the electrode current collector, wherein the electrode mixture layer comprises an electrode active material, a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, calcium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less: wherein X? represents a counter anion.

Abstract: A secondary battery includes: a positive electrode current collector; a negative electrode current collector; an electrolyte layer disposed between the positive electrode current collector and the negative electrode current collector; a positive electrode electrolytic solution filling part partitioned by the positive electrode current collector and the electrolyte layer; and a negative electrode electrolytic solution filling part partitioned by the negative electrode current collector and the electrolyte layer. The negative electrode electrolytic solution filling part includes a conductive member having a mesh structure and disposed so as to bring the negative electrode current collector and the electrolyte layer into conduction; a negative electrode active material retained in the conductive member; an electrolyte salt; and a non-aqueous solvent dissolving the electrolyte salt.

Abstract: A secondary battery includes: a positive electrode current collector; a negative electrode current collector; a positive electrode electrolytic solution part provided so as to be in contact with the positive electrode current collector, the positive electrode electrolytic solution part containing a positive electrode electrolytic solution; and a negative electrode electrolytic solution part provided so as to be in contact with the negative electrode current collector, the negative electrode electrolytic solution part containing a negative electrode electrolytic solution. The positive electrode electrolytic solution contains a positive electrode active material, an electrolyte salt and a non-aqueous solvent containing a first solvent. The negative electrode electrolytic solution contains a negative electrode active material, an electrolyte salt and a non-aqueous solvent containing a second solvent.

Abstract: A battery member includes: a current collector; an electrode mixture layer provided on the current collector; and an electrolyte layer provided on the electrode mixture layer, in which the electrode mixture layer contains an electrode active material, an organic solvent, a polymer, and an electrolyte salt, and the electrolyte layer contains a polymer, an oxide particle, and an electrolyte salt.

Abstract: There is disclosed a polymer electrolyte composition that comprises a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less: wherein X? represents a counter anion.

Abstract: Disclosed is a member for electrochemical devices comprising a current collector, an electrode mixture layer provided on the current collector, and an electrolyte layer provided on the electrode mixture layer in this order, wherein the electrode mixture layer comprises an electrode active material, a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, calcium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less, and the electrolyte layer comprises an inorganic solid electrolyte: wherein X? represents a counter anion.

Abstract: Disclosed is a polymer electrolyte composition comprising a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, magnesium salts, and calcium salts, and an inorganic oxide including a lithium element, a lanthanum element, and a zirconium element, wherein, when the molar number of the lanthanum element contained in the inorganic oxide is set to M(La) and the molar number of the zirconium element contained in the inorganic oxide is set to M(Zr), M(La) and M(Zr) satisfy the following expression (2): wherein X? represents a counter anion; and 0.4?M(Zr)/M(La)?0.8??(2).

Abstract: There is disclosed a polymer electrolyte composition that comprises a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less: wherein X? represents a counter anion.

Abstract: One aspect of the present invention provides a manufacturing method of a battery member for a secondary battery including fabricating a laminated body by providing an electrolyte material layer between a pair of electrode material layers, and collectively cutting the laminated body.

Abstract: Disclosed is an electrochemical device electrode comprising an electrode current collector and an electrode mixture layer provided on at least one principal surface of the electrode current collector, wherein the electrode mixture layer comprises an electrode active material, a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, calcium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less: wherein X? represents a counter anion.