Positive electrode active material layer, electrode, and solid-state battery

Abstract

An electrode including the positive electrode active material layer, and a semi-solid-state battery or all-solid-state battery including the electrode. The positive electrode active material layer contains: a positive electrode active material (A); a solid electrolyte (B); and a binder (C), wherein the binder (C) contains a vinylidene fluoride copolymer, the vinylidene fluoride copolymer is a copolymer of vinylidene fluoride and hexafluoropropylene or a copolymer of vinylidene fluoride and chlorotrifluoroethylene, and the vinylidene fluoride copolymer contains 83.0 mass % or more and 97.0 mass % or less of a structural unit derived from vinylidene fluoride, when a total amount of structural units of the vinylidene fluoride copolymer is 100.0 mass %.

Dependencies are inferred from the claim text.