▎ 摘　　要

NOVELTY - Preparing polypyrrole coated sulfur nano particle-graphene fiber non-woven fabric composite material involves preparing the sodium thiosulfate and the surface-active agent in water and stirring, adding acid solution, stirring and reacting, taking the precipitate and cleaning to obtain the nano sulfur particles, preparing coated sulfur nanoparticles the nano sulfur particles constant temperature water bath stirring, adding auxiliary solvent and initiator after secondary stirring, then adding pyrrole three times stirring, at last, collecting the product and washing, dry polypyrrole coated sulfur nanoparticles, preparing coated sulfur nano particle-oxidized graphene under the grinding condition, the polypyrrole coated sulfur nanoparticle is added to the graphene solution, obtaining the dispersion after spinning, obtaining polypyrrole coated sulfur nano- particle-graphene short fiber, preparing coated sulfur nano particle-oxidized graphene fiber non-woven fabric composite material. USE - Method for preparing polypyrrole coated sulfur nano particle-graphene fiber non-woven fabric composite material for use in the lithium-sulfur battery positive electrode material. ADVANTAGE - The method has good mechanical performance, excellent conductivity, and flexibility, as a self-supporting lithium-sulfur battery positive electrode material has high specific capacity and excellent cycle magnification performance. DETAILED DESCRIPTION - Preparing polypyrrole coated sulfur nano particle-graphene fiber non-woven fabric composite material involves preparing the sodium thiosulfate and the surface-active agent in water and stirring, adding acid solution, stirring and reacting, taking the precipitate and cleaning to obtain the nano sulfur particles, preparing coated sulfur nanoparticles the nano sulfur particles constant temperature water bath stirring, adding auxiliary solvent and initiator after secondary stirring, then adding pyrrole three times stirring, at last, collecting the product and washing, dry polypyrrole coated sulfur nanoparticles, preparing coated sulfur nano particle-oxidized graphene under the grinding condition, the polypyrrole coated sulfur nanoparticle is added to the graphene solution, obtaining the dispersion after spinning, obtaining polypyrrole coated sulfur nano- particle-graphene short fiber, preparing coated sulfur nano particle-oxidized graphene fiber non-woven fabric composite material, the polypyrrole coated sulfur nano particle-oxidized graphene the short fiber for filtering, dry, washing and secondary dry, and preparing the polypyrrole coated sulfur nano particle-oxidized graphene fiber non-woven fabric composite material.