NONAQUEOUS SECONDARY BATTERY

摘要

PURPOSE:To provide a new secondary battery excellent in the cycle property and preservation characteristic and having high safety. CONSTITUTION:A negative electrode of a nonaqueous secondary battery is made of a carbon material, Electrolyte of an electrolytic solution is Lewis acid double salt expressed by LiXFn, a main solvent is a mixed solvent of cyclic ester carbonate and cyclic ester at 10:90 to 80:20wt.%, and noncyclic ester carbonate of 5 to 60wt.% is contained in the mixed solvent.