Solid electrolyte material and battery
Provided is a solid electrolyte material represented by the following composition formula (1) Li 3−3δ−a Y 1+δ−a M a Cl 6−x−y Br x I y Formula (1) where M is one or more kinds of elements selected from the group consisting of Zr, Hf, and Ti; −1<δ<2; 0<a<1.5; 0<(3−3δ−a); 0<(1+δ−a); 0≤x≤6; 0≤y≤6; and (x+y)≤6.
1. A solid electrolyte material represented by the following composition formula (1)
Li 3−3δ−a Y 1+δ−a M a Cl 6−x−y Br x I y Formula (1)
where
M is one or more kinds of elements selected from the group consisting of Zr, Hf, and Ti;
−1<δ<1;
0<a<1.5;
0<(3−3δ−a);
0<(1+δ −a);
0≤x≤6;
0≤y≤6; and
(x+y)≤6.
2. The solid electrolyte material according to claim 1 , wherein
0.1≤a≤0.9 is satisfied.
3. The solid electrolyte material according to claim 2 , wherein
0.3≤a≤0.7 is satisfied.
4. The solid electrolyte material according to claim 1 , wherein
−0.4≤δ≤0.4 is satisfied.
5. The solid electrolyte material according to claim 4 , wherein
−0.2≤δ≤0.2 is satisfied.
6. The solid electrolyte material according to claim 5 , wherein
−0.1≤δ≤0.1 is satisfied.
7. A battery, comprising:
a positive electrode;
a negative electrode; and
an electrolyte layer provided 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 a solid electrolyte material according to claim 1 .