▎ 摘　　要

NOVELTY - Preparing graphene oxide/sulfur/sisal fibre active carbon lithium sulfur battery composite material positive electrode comprises kneading and cleaning the sisal fibre into 1-2 cm long small section, then using weak acid solution to acidify the sisal fibre small section after cutting, after the sisal fibre after acidifying treatment cleaning, drying, taking 10-15 g of the sisal fibre obtained by mixing with a certain amount of iron source catalyst, putting in a beaker, adding proper absolute ethyl alcohol, ultrasonically processing for 2-2.5hours, washing and drying the mixture obtained by ultrasonic, putting into a tubular furnace, carbonizing for 2-2.5 hours under the inert gas atmosphere, the carbonizing temperature is 900-1200℃, the heating speed is 3℃/min after the furnace temperature is cooled to the room temperature, obtaining the fibrous carbon material, cleaning the obtained fibrous carbon material. USE - Method for preparing graphene oxide/sulfur/sisal fibre active carbon lithium sulfur battery composite material positive electrode. ADVANTAGE - The method improves conductivity and circulation stability of the lithium sulfur battery positive electrode. DETAILED DESCRIPTION - Preparing graphene oxide/sulfur/sisal fibre active carbon lithium sulfur battery composite material positive electrode comprises kneading and cleaning the sisal fibre into 1-2 cm long small section, then using weak acid solution to acidify the sisal fibre small section after cutting, after the sisal fibre after acidifying treatment cleaning, drying, taking 10-15 g of the sisal fibre obtained by mixing with a certain amount of iron source catalyst, putting in a beaker, adding proper absolute ethyl alcohol, ultrasonically processing for 2-2.5hours, washing and drying the mixture obtained by ultrasonic, putting into a tubular furnace, carbonizing for 2-2.5 hours under the inert gas atmosphere, the carbonizing temperature is 900-1200℃, the heating speed is 3 ℃/min after the furnace temperature is cooled to the room temperature, obtaining the fibrous carbon material, cleaning the obtained fibrous carbon material, drying and ball milling and crushing to obtain black powder-shaped sample, taking 1-1.5g of black powder sample obtained, adding proper distilled water in the beaker, stirring uniformly, transferring to the reaction kettle of the lining polytetrafluoroethylene at 140-160 ℃, hydrothermal 5-6 hours, after naturally cooling to room temperature, filtering and washing by absolute ethyl alcohol, drying to obtain sisal fibre active carbon sample, taking 0.5-1.5g of sisal fibre active carbon prepared to dissolve in proper sodium thiosulfate (Na2S2O3) solution, ultrasonic 1-1.5 hours to make Na2S2O3fully immersed in sisal fibre active carbon, then dripping sulfuric acid (H2SO4) solution under the magnetic stirring condition, then uniformly stirring for 2-2.5 hours to obtain the sulfur sisal fibre active carbon composite solution, dropping the sulfur sisal fibre active carbon composite solution obtained into the graphene oxide suspension prepared by improved Hummers method, magnetically stirring for 2-2.5 hour at room temperature, filtering and drying to obtain the mixture is graphene oxide/sulfur/sisal fibre active carbon composite material positive electrode.