POSITIVE-ELECTRODE ACTIVE MATERIAL WITH HIGH POWER AT THE LOW SOC AND LITHIUM SECONDARY BATTERY INCLUDING THEM

摘要

PURPOSE: A positive electrode active material is provided to have high capacity and excellent lifetime by including a composite dimensional manganese oxide and a transition metal with high irreversible capacity. CONSTITUTION: A positive electrode active material comprises a lithium manganese oxide(a first transition metal oxide) indicated in chemical formula 1: xMnO2·(1-x)Li2MnO3(in here, 0