POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

The present invention relates to a positive electrode for a lithium secondary, the positive electrode having improved capacity, efficiency, lifespan, output properties, and thermal stability, and including a positive electrode current collector, and a first positive electrode active material layer and a second positive electrode active material layer sequentially stacked on the positive electrode current collector, wherein the first positive electrode active material layer and the second positive electrode active material layer include a bimodal positive active material, the first positive electrode active material layer includes small-diameter particles in the form of a single particle, and the second positive electrode active material layer includes small-diameter particles in the form of a secondary particle.