LITHIUM - MANGANESE COMPOUND OXIDE FOR SECONDARY BATTERY, PRODUCTION METHOD THEREFOR AND NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a spinel type lithium - manganese compound oxide which is suitable as the positive pole material of a high energy density secondary battery, and is usable as a practical battery, and to provide an effective method for producing the oxide. SOLUTION: The lithium - manganese compound oxide for a secondary battery is expressed by the general formula of Lix My Mn2-y O4+(M is one or more kinds of transition metals selected from Ni, Co, Cr, Fe and Cu, and 0.9=x=1.2, 0.2=y=1.0, and 0; =0.5 are satisfied), and has a structure of a low-crystalline spinel single phase in which the half width of the (111) face in X-ray diffraction is =0.8 deg..