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

摘要

PROBLEM TO BE SOLVED: To provide a sulfide solid electrolyte material having good ionic conductivity.SOLUTION: A sulfide solid electrolyte material contains a Li element, a Si element, a P element, an S element and an X element (X represents at least one of F, Cl, Br and I), and has a crystal phase B having a peak at a position of 2&thetas;=30.12°±1.00° in X-ray diffraction measurement using a CuKα ray.