POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE BATTERY AND NONAQUEOUS ELECTROLYTE BATTERY USING THIS MATERIAL

摘要

PURPOSE:To provide a nonaqueous electrolyte secondary battery having a high service capacity, and showing superior cycle characteristic and a favorable high temperature proservation characteristic by improving a positive electrode active material. CONSTITUTION:CuMn2O4. is used as a starting material. Spiral analogous compound oxide CuxMn2O4 (on the condition of 0.05<=x<=0.3) or spinel analogous compound oxide LiyCuxMn2O4 (on the condition of 0.05<=x<=0.3 and 0.1<=y<=2) which is produced by abstracting a part of copper therefrom is used as a positive electrode active material. Owing to this process a high temperature preservation characteristic is sharply improved.