| 摘要 |
PROBLEM TO BE SOLVED: To provide a sulfide solid electrolyte material having high Li ion conductivity.SOLUTION: There are provided a method for producing a sulfide solid electrolyte material, and a lithium solid battery containing a sulfide solid electrolyte material produced by the method for producing a sulfide solid electrolyte material. The method for producing a sulfide solid electrolyte material comprises: an amorphization step of performing the amorphization of a raw material composition containing LiS, a sulfide of A (A represents at least one of P, Si, Ge, Al and B), and LiX (X represents a halogen) to synthesize sulfide glass; and a heat treatment step of heating the sulfide glass at a temperature of a crystallization temperature or above to synthesize glass ceramic. In the heat treatment step, the rate of temperature increase up to the crystallization temperature is 6°C/min or more. |
