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

摘要

The present invention aims to provide a sulfide solid electrolyte material with favorable ion conductivity, in which charge and discharge efficiency may be inhibited from decreasing. The object is attained by providing a sulfide solid electrolyte material, comprising: a Li element; a P element; and a S element, characterized in that the material has a peak at a position of 2¸ = 30.21° ± 0.50° in X-ray diffraction measurement using a CuK± ray, and the sulfide solid electrolyte material does not substantially comprise a metallic element belonging to the third group to the sixteenth group.