CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING 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 composite oxide, and a lithium-aluminum-sulfur-boron oxide formed on a surface of the lithium composite oxide. A lithium secondary battery including the cathode active material and having improved stability and electrical properties is provided.