NONAQUEOUS ELECTROLYTE BATTERY

摘要

PURPOSE:To restrict electrolyte decomposition reaction, and improve the storage characteristics and cyclic characteristics by adding a ring compound including at least two ketone groups to nonaqueous electrolyte. CONSTITUTION:A negative pole 1 comprises lithium-aluminum alloy, and it is pressure-applied to a negative pole collector 3 fixed to an inner bottom surface of a negative pole can 2. A positive pole 4 comprises manganese oxide for active material capable of charging by 85wt.% to which acetylene black for conductive agent by 10wt.% and fluorine resin for binding agent by 5% are added mixed and moulded. A separator 7 comprises a porous film of polypropylene and is impregnated with electrolyte comprising mixture of propylene carbonate and dimethyl carbonate to which maleic anhydride is added by 500ppm, and lithium salt of lithium hexafluorophosphate dissolved in it by a ratio of 1mol/1. The storage characteristics and cyclic characteristics can thus be improved.