| 摘要 |
PROBLEM TO BE SOLVED: To improve a cycle characteristic and a discharge characteristic by improving a positive electrode material of a lithium secondary battery. SOLUTION: In this positive electrode material for a lithium secondary battery comprising a positive electrode wherein lithium oxide fine particles as an active material are provided on a current collector, a negative electrode made of graphite and an organic electrolytic solution, the lithium oxide particle is a secondary particle into which primary particles nearly spherically aggregate. An average aggregation diameter of the lithium oxide particle is 10-100 μm, while a conductive auxiliary is added to the positive electrode by <=5 wt.%. The manufacturing method of the lithium secondary battery includes a process wherein the spherical fine particles having even particle diameters are prepared by mixing the positive electrode active material with an organic material such as PVA(polyvinyl alcohol) in a slurry state, then dropping it onto a disc rotating at a required speed. |
