| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a lithium secondary battery and its positive electrode active material, with which a high initial capacity per unit volume of positive electrode can be obtained along with an excellent cyclic characteristics. SOLUTION: A lithium secondary battery is composed of a negative electrode using an active material capable of occluding and emitting lithium ions, a positive electrode using active material consisting of lithium-manganese oxide having spinel structure, a separator interposed between the two electrodes, and an organic electrolytic solution. The lithium-manganese oxide consists of secondary particles having a mean particle size between 20 and 100μm produced through coaguration of primary particles having a mean particle size between 0.01 and 3.0μm. |
