SULFUR-CARBON COMPOSITE, AND CATHODE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY WHICH COMPRISE SAME

The present invention relates to a sulfur-carbon composite containing a porous carbon material coated with a thiophene-based polymer doped with a dopant and sulfur on at least a portion of the interior and surface of the porous carbon material, and a positive electrode for lithium secondary battery, and a lithium secondary battery comprising the same.