LITHIUM MANGANESE MULTICOMPONENT OXIDE AND METHOD OF PREPARATION FOR THE SAME AS WELL AS APPLICATION OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a lithium manganese multicomponent oxide which is uniform in composition, has excellent packability and is good in handling in manufacturing electrodes and coatability to a current collector, a method of inexpensively preparing the same without a pulverizing process step and repetitive heat treatment and a position pole active substance using this lithium manganese multicomponent oxide as well as a high-performance lithium secondary battery using this positive pole active substance. SOLUTION: This lithium manganese multicomponent oxide forms secondary particles having a spherical grain size of 1 to 100 μm by aggregation of primary particles and is 0.1 to 10 m<2> /g in specific surface area and >=0.90 in circularity of the projection images of the secondary particles. The lithium secondary battery is manufactured by using the positive pole active substance.