Solid electrolyte, method for producing solid electrolyte, and composite body
A solid electrolyte according to the present disclosure is represented by the following compositional formula (1). Li 7 (La 3-x Bi x )Zr 2 O 12 (1) In the formula (1), x satisfies 0.05<x<0.40.
1. A solid electrolyte, represented by the following compositional formula (1):
Li 7 (La 3-x Bi x )Zr 2 O 12 (1)
wherein x satisfies 0.05<x<0.40.
2. A method for producing a solid electrolyte comprising:
a mixing step of mixing multiple types of raw materials containing metal elements included in the following compositional formula (1), thereby obtaining a mixture;
a first heating step of subjecting the mixture to a first heating treatment thereby forming a calcined body; and
a second heating step of subjecting the calcined body to a second heating treatment thereby forming a crystalline solid electrolyte represented by the following compositional formula (1):
Li 7 (La 3-x Bi x )Zr 2 O 12 (1)
wherein x satisfies 0.05<x<0.40.
3. The method for producing a solid electrolyte according to claim 2 , wherein a heating temperature in the first heating step is 500° C. or higher and 650° C. or lower.
4. The method for producing a solid electrolyte according to claim 2 , wherein a heating temperature in the second heating step is 800° C. or higher and 1000° C. or lower.
5. A composite body, comprising:
an active material; and
the solid electrolyte according to claim 1 that coats a part of a surface of the active material.