ADDITIVE FOR POSITIVE ELECTRODE OF LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Provided is an additive for a positive electrode of a lithium secondary battery, the additive including a lithium transition metal oxide, LiPO, LiAlO and LiBO. The lithium transition metal oxide has an aluminum-doped form. The additive including LiPO, LiAlO and LiBO together with the lithium transition metal oxide has functionality of improving stability of a battery when used in a positive electrode of a lithium secondary battery. Specifically, a general lithium transition metal oxide causes a side reaction with an electrolyte liquid when used in a positive electrode of a lithium secondary battery causing a problem of decreasing stability such as generating gas in the battery, however, the LiPO, the LiAlO and the LiBO are evenly mixed with the lithium transition metal oxide or some thereof form a partial coating layer, or a portion of aluminum is doped to the lithium transition metal oxide to suppress the lithium transition metal oxide from causing a side reaction with an electrolyte liquid.