POSITIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY

摘要

PURPOSE: A positive electrode active material is provided to obtain a secondary battery having high capacity and excellent rate characteristics. CONSTITUTION: A positive electrode active material for a secondary battery has a composition of chemical formula 1: xLi_2MO_3*yLiM'O_2*zLi_3PO_4. In chemical formula 1, M is at least one element selected from the metals of group 1 or group 2, having an oxidation number of +4, and M' is at least one element selected from the transition metals of group 1 or group 2, having an average oxidation number of +3, and 0.1=x=0.9, 0.1=y=0.9 and 0