Patent ID: 6641863
Filing Date: 2003-11-04
Classification: H01M,Y02E

Abstract:
A method of producing a product including a thin film of an inorganic solid electrolyte, comprising the steps:a) providing a base member; b) heating the base member to a heating temperature; and c) while heating the base member to the heating temperature, forming a thin film of an inorganic solid electrolyte on the base member by a vapor deposition process, wherein the inorganic solid electrolyte is a sulfide that contains sulfur, 20 to 65 atomic percent of lithium, and at least one element selected from the group consisting of phosphorous, silicon, boron, germanium and gallium; wherein the heating temperature is at least 40Â° C. and lower than a glass transition temperature of the thin film of the inorganic solid electrolyte; and wherein carrying out at least the steps a), b) and c) produces the product including the thin film of the inorganic solid electrolyte on the base member, in which the thin film is amorphous or glassy and has an ionic conductance higher than would have resulted without the heating of the base member to the heating temperature.