LITHIUM-SULFUR SECONDARY BATTERY

The present invention relates to a lithium-sulfur secondary battery, and in particular, to a lithium-sulfur secondary battery in which a positive electrode includes a sulfur-carbon composite comprising a microporous carbon material and sulfur, or a conductive additive comprising a carbon material having high specific surface area. By specifying conditions of the positive electrode and an electrolyte liquid, energy density may be enhanced compared to existing lithium-sulfur secondary batteries.