▎ 摘　　要

NOVELTY - Graphene nanosheet coated porous carbon fiber material has 3-8 number layers of graphene nanosheets coated with porous carbon fiber material graphene nanosheet, 400-1000 m2/gram specific surface area and 0.8-1.2 centimetres2/gram porosity, is claimed. USE - Used as graphene nanosheet coated porous carbon fiber material. ADVANTAGE - The method improves the adsorption force of the surface of the carbon layer, enhances the interface bonding force of the carbon carrier to sulfur and polysulfide and improves the cycle performance of the lithium-sulfur battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the material, comprising (i) adding 85 wt.% phosphoric acid, pentaerythritol and absolute ethanol into a round bottom flask and stirring the reaction at a specific temperature for a specific period of time to obtain a product solution, (ii) adding a specific amount of melamine and carbon fiber to a specific amount of absolute ethanol, and stirring at room temperature for a specific time to obtain a solution, (iii) cooling the mixture, adding the solution into the mixture, reacting at 80 degrees C for a specific period of time and rotary steaming to obtain the prepolymer, and (iv) pyrolyzing the prepolymer in a tube furnace under argon atmosphere.