SOLID ELECTROLYTE SHEET, ELECTRODE SHEET, AND ALL SOLID SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a self-supported solid electrolyte sheet having a large area, and to provide a method of manufacturing a solid electrolyte sheet applicable to a continuous process and a mass-production.SOLUTION: The solid electrolyte sheet includes: a glass solid electrolyte containing at least a lithium element (Li) and a sulfur element (S); and a support body composed of an electronic insulating inorganic fiber. The method of manufacturing a solid electrolyte sheet includes a step of hot-pressing a laminate or a composite containing the glass solid electrolyte containing at least a lithium element (Li) and a sulfur element (S) and the support body composed of the electronic insulating inorganic fiber at 150°C to 360°C.