LITHIUM MANGANESE OXIDE COMPOSITE, SECONDARY BATTERY, AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To increase the amount of lithium ions that can be received and released in and from a positive electrode active material, and achieve increased capacity and high energy density of a secondary battery.SOLUTION: A composite material of crystallites of LiMnO(crystallites with a spinel crystal structure) and crystallites of LiMnO(crystallites with a layered rock-salt crystal structure) is used as a positive electrode active material. The lithium manganese oxide composite has high structural stability and high capacity.