▎ 摘　　要

NOVELTY - Manufacture of nitrogen-doped graphene-sulfur composite involves dispersing graphite oxide in distilled water to prepare a graphene oxide suspension, adding a conductive polymer containing nitrogen, hydrothermally reacting to produce conductive polymer-coated graphene oxide, heating to produce a nitrogen-doped graphene sheet, adding the graphene sheet to a solvent containing sulfur, mixing, dispersing, heating to prepare a nitrogen-doped graphene sheet-sulfur composite, and forming a polymer coating layer on the surface of composite. USE - Manufacture of nitrogen-doped graphene-sulfur composite for electrode of lithium-sulfur secondary battery (all claimed). ADVANTAGE - The graphene-sulfur composite having excellent electroconductivity and reduced resistance is produced, and provides battery having excellent durability and structural stability.