MANUFACTURE OF SPINEL TYPE LITHIUM MANGANATE

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of spinel type lithium manganate restraining a manganese elution quantity and improving battery characteristics at a high temperature such as high temperature storage characteristics and high temperature charge/discharge cycle characteristics. SOLUTION: Electrodeposited manganese dioxide is neutralized by lithium hydroxide. After neutralization, electrolytic manganese dioxide containing 0.02-0.5 wt.% of lithium is mixed with a lithium raw material, and then is fired. The manganese dioxide is crushed before or after neutralization by the lithium hydroxide.