METHOD FOR PREPARING LITHIUM MANGANATE, LITHIUM MANGANATE, POSITIVE ELECTRODE FOR LITHIUM SECONDARY CELL CONTAINING THE SAME AS ACTIVE MATERIAL AND LITHIUM SECONDARY CELL

摘要

A method for preparing lithium manganate having spinel structure which comprises contacting a manganese halide and lithium at a temperature of 100 DEG C or less in a liquid phase to react with each other; a lithium manganate which is prepared according to the method, is represented by the formula LixMnOy, wherein x represents a real number satisfying 0 < x < 0.8, and y represents a real number satisfying 1.8 ≤ y ≤ 2.4, and has an average particle diameter of 1 to 50 mu m and a specific surface area of 10 to 15 m<2>/g; a positive electrode for a lithium secondary cell comprising the lithium manganate as an active material; and a lithium secondary cell using the positive electrode.