POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERIES

摘要

The present invention relates to a positive electrode material for lithium ion secondary batteries, which is characterized by containing a spinel-type lithium manganese composite oxide and a superlattice structure positive electrode material that is a lithium transition metal composite oxide wherein two or more kinds of transition metal atoms are regularly arranged, thereby forming a superlattice crystal structure. The present invention is able to provide a low-cost lithium ion secondary battery which has both high capacity and high safety.