Solid electrolyte material and battery using same
A solid electrolyte material of the present disclosure consists substantially of: Li; M1, M2; O; and X. Here, the M1 is at least one selected from the group consisting of Ta and Nb, the M2 is at least one selected from the group consisting of Zr, Y, and La, and the X is at least one selected from the group consisting of F, Cl, and Br.
1 . A solid electrolyte material consisting of:
Li;
M1;
M2;
O; and
X, wherein
M1 is at least one selected from the group consisting of Ta and Nb,
M2 is at least one selected from the group consisting of Zr, Y, and La,
X is at least one selected from the group consisting of Cl and Br,
a molar ratio of a total amount of Li, M1, M2, O, and X to a total amount of all elements constituting the solid electrolyte material is 95% or more, and
a molar ratio of M2 to a total amount of M1 and M2 is more than 0% and 60% or less.
2 . The solid electrolyte material according to claim 1 , wherein
the solid electrolyte material includes a crystalline phase having a peak within a range of a diffraction angle 2θ from 11.08° to 14.12° in an X-ray diffraction pattern obtained by X-ray diffraction measurement using a Cu-Kα ray.
3 . The solid electrolyte material according to claim 1 , wherein
the molar ratio of M2 to the total amount of M1 and M2 is 5% or more and 50% or less.
4 . The solid electrolyte material according to claim 3 , wherein
the molar ratio of M2 to the total amount of M1 and M2 is 10% or more and 50% or less.
5 . The solid electrolyte material according to claim 1 , wherein
M2 is Zr.
6 . A battery comprising:
a positive electrode;
a negative electrode; and
an electrolyte layer disposed between the positive electrode and the negative electrode, wherein
at least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer includes the solid electrolyte material according to claim 1 .
7 . A solid electrolyte material consisting of:
Li;
M1;
M2;
O; and
X, wherein
the M1 is at least one selected from the group consisting of Ta and Nb,
the M2 is at least one selected from the group consisting of Zr, Y, and La,
the X is at least one selected from the group consisting of F, Cl, and Br, wherein the solid electrolyte material includes a crystalline phase having a peak within a range of a diffraction angle 2θ from 11.08° to 14.12° in an X-ray diffraction pattern obtained by X-ray diffraction measurement using a Cu-Kα ray.
8 . The solid electrolyte material according to claim 7 , wherein
the X is at least one selected from the group consisting of Cl and Br.
9 . The solid electrolyte material according to claim 7 , wherein
a ratio of an amount of the M2 to a sum of amounts of the M1 and the M2 by mole is more than 0% and 60% or less.
10 . The solid electrolyte material according to claim 7 , wherein the M2 is Zr.
11 . A battery comprising:
a positive electrode;
a negative electrode; and
an electrolyte layer disposed between the positive electrode and the negative electrode, wherein
at least one selected from the group consisting of the positive electrode, the negative electrode, and the electrolyte layer includes the solid electrolyte material according to claim 7 .