POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY HAVING THE SAME

Disclosed is a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same, the positive electrode for a lithium secondary battery comprising a current collector, and a positive electrode active material layer comprising a plurality of positive electrode active materials disposed at least one surface of the current collector and an atomic layer deposition coating layer disposed in surfaces and pores of the positive electrode active materials and gaps between the plurality of positive electrode active materials, wherein the atomic layer deposition coating layer is 0.2 to 1 nm in thickness, when the positive electrode active material layer is equally divided into five in a thickness-wise direction, a portion of the positive electrode active material layer in contact with the current collector is referred to as a lowermost positive electrode active material layer and a surface portion of the positive electrode active material layer farthest away from the current collector is referred to as an uppermost positive electrode active material layer, a ratio of an amount of the atomic layer deposition coating layer of the lowermost positive electrode active material layer to an amount of the atomic layer deposition coating layer of the uppermost positive electrode active material layer is 40 weight% or more, and the positive electrode has a porosity of 15% to 35%.