Ion-conductive solid and all-solid-state battery

Abstract

An ion conductive solid that can be produced by heat treatment at low temperature and has a high ion conductivity; and the ion conductive solid comprises an oxide represented by a general formula: Li6+a-c-2dYb1-a-b-c-dM1aM2bM3cM4dB3O9 (In the formula, M1 is at least one metal element selected from the group consisting of Mg, Mn, Zn, Ni, Ca, Sr, and Ba, M2 is at least one metal element selected from the group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Lu, In, and Fe, M3 is at least one metal element selected from the group consisting of Zr, Ce, Hf, Sn, and Ti, M4 is at least one metal element selected from the group consisting of Nb and Ta, and a, b, c, and d are real numbers of which each is in a specific range).

Dependencies are inferred from the claim text.