NONAQUEOUS ELECTROLYTIC SECONDARY BATTERY

摘要

PURPOSE:To realize a nonaqueous electrolytic secondary battery having a high capacity and satisfactory cycle characteristic and high-temperature storing characteristic by improving a positive electrode active material in an improvement in positive electrode active material for nonaqueous electrolytic secondary battery. CONSTITUTION:A positive electrode active material powder obtained by adding cerium to LiCoO2 or a composite oxide obtained by partly substituting cobalt in this compound by a transition metal is used. Thus, the cycle characteristic and high-temperature storing characteristic are significantly improved.