POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To improve the cycle characteristics at high temperature which is a characteristic problem of lithium manganese oxide when it is used as an active material. SOLUTION: This positive electrode material for a lithium secondary battery includes, as an active material, lithium manganese oxide with a chalcogen compound of a group 6 element physically mixed.