HALIDE SOLID ELECTROLYTE MATERIAL AND BATTERY USING THIS

A solid electrolyte material according to the present disclosure is represented by the chemical formula Li(ZrM)X (I). M denotes at least one element selected from the group consisting of Al, Ga, Bi, Sc, Sm, and Sb, X denotes a halogen element, and the two mathematical formulae 0 < a < 1 and 0 < b < 1.5 are satisfied.