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

A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium metal oxide particle containing nickel, and a coating material formed on at least a portion of a surface of the lithium metal oxide particle. The coating material includes a metalloid element or a metal element. A surface coating level of the cathode active material is 0.3 or more.