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 ion conductivity and good resistance to reduction. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material which is characterized by having a peak at a position where 2θ = 29.86° ± 1.00° in an X-ray diffraction measurement using a CuKα ray and having a composition represented by Li2y+3PS4 (wherein 0.1 ≤ y ≤ 0.175).