LITHIUM-MANGANESE MULTIPLE OXIDE, ITS PRODUCTION AND NON-AQUEOUS ELECTROLYTE ACCUMULATOR

摘要

PROBLEM TO BE SOLVED: To produce Li-Mn multiple oxide as a positive electrode material used in a non-aq. electrolyte accumulator typified by a lithium accumulator and to obtain a non-aq. electrolyte accumulator using the Li-Mn multiple oxide. SOLUTION: Manganese dioxide as Mn stock is fired at 800-900 deg.C, mixed with an Li salt and fired at 650-850 deg.C in an atmosphere of oxygen to obtain the objective Li-Mn multiple oxide represented by the formula, Li1+x Mn2-x Oy (where 0.04<=x<=0.08) and having 0.3-0.7 m<3> /g specific surface area and <=4 wt.% SO4 content. The multiple oxide is used as a positive electrode active material for a non-aq. electrolyte accumulator to obtain the objective non-aq. electrolyte accumulator.