▎ 摘　　要

NOVELTY - A graphene/polyaniline/sulfur composite cathode material comprises polyaniline/sulfur nanoparticle as core, and graphene as shell covering structure. A free space is provided between polyaniline/sulfur nanoparticle and graphene. USE - Graphene/polyaniline/sulfur composite cathode material for lithium sulfur battery (claimed). ADVANTAGE - The cathode material increases the circulation performance of lithium sulfur battery, and has excellent conductivity and structural stability, and the cathode material is prepared using simple process, and is suitable for industrial production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of graphene/polyaniline/sulfur composite cathode material, which involves mixing polyaniline, sulfur and solvent, removing solvent, obtaining polyaniline/sulfur composite particles, mixing composite particles with graphene oxide, and hydrothermally reducing mixed solution at 160-180 degrees C; and (2) lithium sulfur battery.