▎ 摘　　要

NOVELTY - Preparing manganese-doped tantalum trisulfide-reduced graphene oxide composite material, involves (i) ultrasonically dispersing graphene oxide in water to obtain a graphene oxide solution with negative charges on the surface, and (ii) dissolving thioacetamide, tantalum chloride and manganese acetate tetrahydrate in deionized water, stirring until completely dissolved, adding graphene oxide solution into above-mentioned solution, transferring the mixed solution into the reactor at 250-300°C, reacting for 24 hours, washing with deionized water for 5-6 times, and finally freeze-drying at -56°C for 24 hours. USE - Preparation method of manganese-doped tantalum trisulfide reduction graphene oxide composite material for lithium-sulfur battery. ADVANTAGE - The method enables to prepare manganese-doped tantalum trisulfide reduction graphene oxide composite material, which can block polysulfide migration, accelerate lithium ion transfer, reduce shuttle effect, effectively increase the surface active site, improve the chemical adsorption capacity of the polysilicon, and improve the electrochemical performance of the lithium sulfur battery.