Mn-based Cathode Material of High capacity and Lithium Secondary Battery containing the same

摘要

PURPOSE: A high capacity lithium manganese oxide-based positive electrode active material and a lithium secondary battery including the same are provided to express high capacity. CONSTITUTION: A high capacity lithium manganese oxide-based positive electrode comprises positive active material including lithium manganese oxide represented by chemical formula 1, and a metal thin film layer. The chemical formula 1 is as follows: aLi_2MnO_3_(1-a)LiMO_2. In the chemical formula 1, 0a1. M is one element or two or more mixtures selected from Al, Mg, Mn, Ni, Co, Cr, V, and Fe.