▎ 摘　　要

NOVELTY - A lithium sulfur battery composite anode material comprises anode composite material with core-shell structure. The core-layer material (I) is graphene-carbon nanotube hybrid composite material, elemental sulfur and nano inorganic metal oxide. The shell-layer material is graphite nanosheet or oxidized graphene. USE - Lithium sulfur battery composite anode material. ADVANTAGE - The material improves elemental sulfur electrochemical capacity, suppresses polysulfide, and uses anode with high energy density and long cycle life. DETAILED DESCRIPTION - A lithium sulfur battery composite anode material comprises anode composite material with core-shell structure. The core-layer material of formula C'aSbMcGd (I) is graphene-carbon nanotube hybrid composite material, elemental sulfur and nano inorganic metal oxide. The shell-layer material is graphite nanosheet or oxidized graphene. C'=graphene oxide or graphite nanosheet; M=nano inorganic metal oxide graphene; G=carbon nanotube hybrid a=0.01-0.1; b=0.35-0.75; c=0.01-0.2; d=0.05-0.5; or a+d+b+c=1. An INDEPENDENT CLAIM is included for preparation of lithium sulfur battery composite anode material comprising cleaning nano inorganic metal oxide with acid and alkali, mixing with elemental sulfur, putting into vacuum vessel, oil bath heating to 100-200 degrees C, melting elemental sulfur, keeping temperature for 1-5 hours, cooling to obtain nano inorganic metal oxide and mono-sulfur compound, crushing in alcohol solvent, mixing with commercially available graphene carbon nanotube hybrid, putting into vacuum container, hot-melt processing to 100-200 degrees C for 1-5 hours, cooling, stirring and grinding under nitrogen or argon gas atmosphere protection, grinding and processing into graphite nanosheet or oxidized graphene powder, heating to 100-200 degrees C, naturally cooling and stirring, and grinding to powder.