CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, CATHODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

A cathode active material for lithium secondary batteries according to embodiments of the present invention includes different types of lithium metal oxide particles having different circularities in a predetermined mixing weight ratio. When using the cathode active material for a lithium secondary battery, it is possible to provide a secondary battery having enhanced mechanical and electrical stability, and improved energy density.