Positive electrode for rechargeable lithium battery and rechargeable lithium battery including same

A positive electrode according to one embodiment of the present invention includes a current collector, and a positive active mass layer formed on the current collector, including a positive active material, active carbon, a conductive material, and a binder, wherein a ratio of the active mass density of the positive active mass layer and the thickness of the positive active mass layer fulfills the condition: 0.09 ¤ active mass density of the active mass layer g / cc / thickness of the active mass layer µm ¤ 0.3.