CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a cathode active material for a lithium secondary battery, a method for producing same, and a lithium secondary battery comprising same and can provide a cathode active material for a lithium secondary battery, the cathode active material comprising: a compound capable of reversible lithium intercalation and deintercalation; and a complex coating layer comprising M formed on the surface of the compound, wherein said M is at least one metal selected from the group consisting of Al, Zr, Ti, Mg, V, Zn, Mo, Ni, Co, and Mn and the surface free energy of the cathode active material is 4 to 20% lower than that of the compound capable of reversible lithium intercalation and deintercalation.