| CPC H01M 10/0562 (2013.01) [H01M 10/0525 (2013.01); H01M 2300/0071 (2013.01)] | 8 Claims |

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1. A garnet-type oxide comprising Li, La, Zr and O as main constituent elements,
wherein the garnet-type oxide contains the main constituent elements and substitution elements including at least Zn and Bi, and
wherein the garnet-type oxide has a composition of Li(7-2j)ZnjLa(3-k)BikZr2O(2-δ), wherein j, k, and δ are:
0.05≤j<3.5;
0.05≤k<3; and
0≤δ<1.
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