SULFIDE-BASED LITHIUM-ION-CONDUCTING SOLID ELECTROLYTE GLASS, ALL-SOLID LITHIUM SECONDARY BATTERY, AND METHOD OF MANUFACTURING ALL-SOLID LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To easily inexpensively manufacture an all-solid lithium secondary battery having high charge discharge output current density.

SOLUTION: The method of manufacturing the all-solid lithium secondary battery is that a mixed electrolyte formed by mixing various sulfide-based lithium ion conductive solid electrolytes with α-alumina is vitrified to form a new lithium ion conductor having improved conductivity. An electrolyte layer 8 using the lithium ion conductor, a positive electrode (I) comprising a positive mix material 3, and a negative electrode (II) comprising negative mix material 7 are composed. At least one of the positive electrode (I) and the negatived electrode (II) and the electrolyte layer 8 are stacked, heated and compressed under conditions in which the electrolyte is not crystallized to integrate them and manufacture the battery.

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