▎ 摘　　要

NOVELTY - Lithium secondary battery comprises positive electrode includes sulfur-carbon composite which is formed on surface of the catalyst point as positive electrode active material and electrolyte contains nitrile compound. USE - Lithium secondary battery. ADVANTAGE - The lithium secondary battery improves performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing lithium secondary battery, which involves: (A) dispersing catalyst point in a solvent to prepare catalyst point dispersion, forming mixture by supplying carbon material to the prepared catalyst point dispersion, and then filtering, preparing carbon material, introducing catalyst point in the form of a powder from the upper layer of the mixture, mixing sulfur with the prepared catalyst point-introducing carbon material and then performing heat treatment to prepare positive electrode includes catalyst point-introducing sulfur-carbon composite, facing the prepared positive electrode with the negative electrode, interposing separator therebetween; and (B) injecting electrolyte solution containing nitrile-based compound.