POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM RECHARGEABLE BATTERY, MANUFACTURING METHOD THEREFOR AND LITHIUM RECHARGEABLE BATTERY COMPRISING SAME

A positive electrode active material for a lithium secondary battery, which can improve the performance of the battery by mixing various carbons with positive electrode active material and applying it, and a preparation method thereof and a lithium secondary battery including the same. The positive electrode active material for the lithium secondary battery includes two or more types of active material composites in which sulfur is supported on the carbon materials contained therein, wherein the carbon materials contained in any one of the two or more types of active material composites differ in at least one of the average particle size and shape from the carbon materials contained in another type of active material composites.