Garnet-type Li-ion conductive oxide and all-solid Li-ion secondary battery
A garnet-type Li-ion conductive oxide containing Li x La 3 Zr 2 O 12 (6≦x≦8) contains Al and element T (T is one or more from Ni, Cu, Co, and Fe). The content of Al is, in terms of Al 2 O 3 , 2.5 mol %≦Al 2 O 3 ≦15 mol % with respect to a total amount of Li x La 3 Zr 2 O 12 contained in the garnet-type Li-ion conductive oxide. The content of element T is 25 mol %≦T≦100 mol % with respect to the total amount of Li x La 3 Zr 2 O 12 contained in the garnet-type Li-ion conductive oxide.
1. A garnet-type Li-ion conductive oxide comprising
Li x La 3 Zr 2 O 12 (6≦x≦8) and containing Al and element T (T is one or more from Ni, Cu, Co, and Fe), wherein
the content of Al is, in terms of Al 2 O 3 , 2.5 mol %≦Al 2 O 3 ≦15 mol % with respect to a total amount of Li x La 3 Zr 2 O 12 contained in the garnet-type Li-ion conductive oxide, and
the content of element T is 25 mol %≦T≦100 mol % with respect to the total amount of Li x La 3 Zr 2 O 12 contained in the garnet-type Li-ion conductive oxide.
2. A garnet-type Li-ion conductive oxide comprising
Li x La 3 Zr 2 O 12 (6≦x≦8) and containing Al 2 O 3 and M (M is one or more oxides selected from NiO, CuO, CoO 4/3 , and FeO 3/2 ), wherein
the contents of Al 2 O 3 and M with respect to a total amount of Li x La 3 Zr 2 O 12 contained in the garnet-type Li-ion conductive oxide are such that
2.5 mol %≦Al 2 O 3 ≦15 mol %, and
25 mol %≦M≦100 mol %.
3. An all-solid Li-ion secondary battery comprising
the garnet-type Li-ion conductive oxide according to claim 1 as a solid electrolyte.
4. An all-solid Li-ion secondary battery comprising
the garnet-type Li-ion conductive oxide according to claim 2 as a solid electrolyte.