NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery having high temperature performance, high temperature cycle service life characteristics and excellent standing performance. SOLUTION: The nonaqueous electrolyte secondary battery is characterized in a multilayer separator consisting of the first layer of cross-linked polyethylene minute porous membrane and the second layer of non-cross-linked polyethylene minute porous membrane, in which the second layer is abutted with a positive plate.