MANUFACTURE OF POSITIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide the manufacturing method of a positive active material for a nonaqueous electrolyte secondary battery with high active material specific capacity. SOLUTION: A lithium manganese composite oxide represented by LiMn2O4 used as a positive active material for a nonaqueous electrolyte secondary battery is manufactured in such a way that a manganese compound and a lithium compound are mixed, the mixture is heated by repeating temperature rising and temperature falling to completely and uniformly let proceed synthetic reaction to obtain the positive active material for the nonaqueous electrolyte secondary battery with high active material specific capacity. The temperature difference between temperature rising and temperature falling is preferable to be 1-400 deg.C.