Abstract: It is a major object of the invention to provide a method for processing a battery member, by which a cathode active material and a sulfide solid electrolyte material can be efficiently separated from each other and the cathode active material and Li contained in the sulfide solid electrolyte material can be efficiently recovered.

Abstract: An all-solid battery includes: a positive electrode active material layer that includes a positive electrode active material; a negative electrode active material layer that includes a negative electrode active material; and a solid electrolyte layer that is formed between the positive electrode active material layer and the negative electrode active material layer. The positive electrode active material layer or the solid electrolyte layer further includes a solid electrolyte material. A reaction suppressing portion is formed at an interface between the positive electrode active material and the solid electrolyte material. The reaction suppressing portion is a chemical compound that includes a cation portion formed of a metal element and a polyanion portion formed of a central element that forms covalent bonds with a plurality of oxygen elements.

Abstract: An electrochemical cell includes an electrolyte membrane containing an ionic conductor. The ionic conductor includes: (a) a cation expressed by one of Formulae (1) and (2): R1R2R3HX+??(1) where, in Formula (1), X indicates any one of N and P, and R1, R2 and R3 each indicate any one of alkyl groups C1 to C18 except a structure in which R1?R2?R3, R1R2HS+??(2) where, in Formula (2), R1 and R2 each indicate any one of alkyl groups C1 to C18 except a structure in which R1?R2; and (b) an anion expressed by Formula (3): R4YOm(OH)n?1O???(3) where, in Formula (3), Y indicates any one of S, C, N and P, R4 indicates any one of an alkyl group and a fluoroalkyl group, and m and n each indicate any one of 1 and 2.

Abstract: An electrochemical cell includes an electrolyte membrane containing an ionic conductor. The ionic conductor includes: (a) a cation expressed by one of Formulae (1) and (2): R1R2R3HX+??(1) where, in Formula (1), X indicates any one of N and P, and R1, R2 and R3 each indicate any one of alkyl groups C1 to C18 except a structure in which R1?R2?R3, R1R2HS+??(2) where, in Formula (2), R1 and R2 each indicate any one of alkyl groups C1 to C18 except a structure in which R1?R2; and (b) an anion expressed by Formula (3): R4YOm(OH)n?1O???(3) where, in Formula (3), Y indicates any one of S, C, N and P, R4 indicates any one of an alkyl group and a fluoroalkyl group, and m and n each indicate any one of 1 and 2.

Abstract: The main object of the present invention is to provide a method for producing an all solid lithium battery, capable of easily performing dew point control in a battery assembly step. The present invention solves the above-mentioned problems by providing a method for producing an all solid lithium battery, comprising the steps of: preparing a material composition by adding Li2S, P2S5, and P2O5 so as to satisfy a relation of (Li2S)/(P2S5+P2O5)<3 on a molar basis, synthesizing a sulfide solid electrolyte from the above-mentioned material composition by a vitrification means, and assembling an all solid lithium battery in an atmosphere having a dew-point temperature of ?60° C. or more while using the above-mentioned sulfide solid electrolyte.

Abstract: An electrochemical cell includes an electrolyte membrane containing an ionic conductor. The ionic conductor includes: (a) a cation expressed by one of Formulae (1) and (2): R1R2R3HX+ ??(1) where, in Formula (1), X indicates any one of N and P, and R1, R2 and R3 each indicate any one of alkyl groups C1 to C18 except a structure in which R1?R2?R3, R1R2HS+ ??(2) where, in Formula (2), R1 and R2 each indicate any one of alkyl groups C1 to C18 except a structure in which R1?R2; and (b) an anion expressed by Formula (3): R4YOm(OH)n?1O? ??(3) where, in Formula (3), Y indicates any one of S, C, N and P, R4 indicates any one of an alkyl group and a fluoroalkyl group, and m and n each indicate any one of 1 and 2.