POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME

The present invention relates to a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same, more particularly, to a positive electrode for a lithium secondary battery comprising a sulfur-carbon composite containing thermally expanded-reduced graphene oxide as a positive electrode active material and montmorillonite as an additive. [0002] The positive electrode for a lithium secondary battery of the present invention not only has excellent electrochemical reactivity, but also improves the problem due to leaching of lithium polysulfide, thereby improving capacity and lifetime characteristics of the lithium secondary battery.