| abstract |
A garnet-type lithium ion conductive oxide having high conductivity and a small rate of change in conductivity with respect to temperature is provided. The garnet-type lithium ion conductive oxide of the present invention is Li x Ln 3 (M 1 y M 2 z ) O t (Ln is one selected from the group consisting of La, Pr, Nd and the like). The above element, M 1, is one or more selected from the group consisting of Si, Sc, Ti, V, Ga, Ge, Y, Zr, Nb, In, Sb, Te, Hf, Ta, W, and Bi. The element, M 2, is an element different from M 1, and is one or more elements selected from the group consisting of Sc, Ti, V, Y, Nb, Hf, Ta, Si, Ga, and Ge, and x is 3 ≦ x ≦ 8, y and z are y> 0, z ≧ 0, 1.9 ≦ y + z ≦ 2.1, t is a number satisfying 11 ≦ t ≦ 13) The skeleton contains Al. [Selection figure] None |