▎ 摘　　要

NOVELTY - An anode material comprises graphene film coating and graphene-sulfur composite material coating, where the coating of graphene-sulfur composite material is coated on an aluminum foil current collector, anode material comprises graphene-sulfur composite material, binding agent and electrically conductive agent in mass ratio of 8:1:1, thickness of the graphene film coating is 2-20 mu m, and sulfur content in the second coating is 65-80%. USE - Anode material for use in lithium-sulfur battery. ADVANTAGE - The anode material is inexpensive and applied to large scale production of lithium-sulfur battery, and has high capacity, and overcomes binding problems between slurry and collector, increases conductivity between active substance and current collector and increases utilization rate of activated sulfur and alleviates polysulfide migration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing the anode material, which involves adding graphene to N-methylpyrrolidone (NMP), stirring the mixture ultrasonically for 4-12 hours, putting the mixture into an ultrasonic vibrator at ultrasonic power of 100-600 W, oscillating the mixture for 1-2 hours ultrasonically, mixing the obtained slurry with graphene to obtain graphene dispersing slurry, spraying 1-6 wt.% graphene dispersing slurry over the aluminum foil by spin coating or blade coating method, drying the coated aluminum foil in a vacuum drying chamber at 120 degrees C for 2 hours to obtain a coated aluminum foil current collector, mixing graphene and sublimed sulfur in mass ratio of 1:9-10 uniformly, placing the mixture in a tubular furnace, heating the mixture at inert atmosphere at heating speed of 8-12 degrees C/minute, heating the mixture at 155 degrees C for 2-12 hours, and at 200 degrees C for 0-6 hours, cooling the mixture to room temperature, grinding and sieving the mixture to obtain graphene-sulfur composite material, mixing the graphene-sulfur composite material with SP binder and polyvinylidene fluoride (PVDF) in mass ratio of 8:1:1, stirring the mixture magnetically, coating the current collector with the obtained slurry by spreader, and drying the coated collector at 60 degrees C for 24 hours with vacuum drying chamber.