POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

The present disclosure relates to a positive electrode additive for a lithium secondary battery, a positive electrode active material comprising same, a positive electrode, and a lithium secondary battery. More specifically, the positive electrode additive represented by chemical formula 1 is formed on the surface of a carbon material included in a positive electrode active material, and is not dissolved in an electrolytic solution, thus having the function of electrically separating a positive electrode and a negative electrode. Thus, the additive can improve battery performance through suppression of side reactions in a battery.