| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion conductive solid electrolyte sheet having high ion conductivity, and to provide a method for producing the same.SOLUTION: There is provided a method for producing a crystalline lithium ion conductive solid electrolyte sheet 20 by forming a glass-like lithium ion conductive solid electrolyte into a sheet shape and then subjecting to heat treatment, or forming a glass-like lithium ion conductive solid electrolyte into a sheet shape and simultaneously subjecting the sheet to heat treatment, wherein the glass-like lithium ion conductive solid electrolyte is a sulfide-based inorganic solid electrolyte produced using lithium sulfide and diphosphorus pentasulfide; lithium sulfide, a simple substance phosphorus and a simple substance sulfur; or lithium sulfide, diphosphorus pentasulfide, a simple substance phosphorus and/or a simple substance sulfur as raw materials which contain no lithium hydroxide and the heat treatment temperature is equal to or higher than a glass transition temperature of the sulfide-based inorganic solid electrolyte. |
