SULFIDE SOLID ELECTROLYTE MATERIAL, BATTERY AND METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE MATERIAL

摘要

The present invention addresses the problem of providing a sulfide solid electrolyte material that has good reduction resistance. The present invention solves the aforementioned problem by providing a sulfide solid electrolyte material which is characterized in that: a second structure part (2) is formed so as to cover a plurality of first structure parts (1); a first ion conductor that constitutes the first structure parts (1) has a specific crystal phase having good ion conductivity; and the weight ratio (γ) of elemental Me to elemental P in the second structure part (2) is smaller than 0.72.