▎ 摘　　要

NOVELTY - Preparation of high energy density graphene battery anode material involves (1) mixing 10-30 pts. wt. graphene oxide, 80-120 pts. wt. absolute ethanol and 1-5 pts. wt. silicate, ultrasonically dispersing, obtaining dispersion, (2) dripping 1-10 pts. wt. iron salt solution into the dispersion, stirring, hydrolyzing, obtaining hydrolyzate, (3) spraying drying the hydrolyzate, obtaining precursor, (4) placing the precursor in a hydrogen atmosphere, heating to 800-1000 degrees C, heat-preserving, passing in organic alkane gas under the condition of 1000-1500 degrees C, performing high temperature reaction to reduce graphene, (6) ultrasonically cleaning the reduced graphene with hydrofluoric acid, washing, and drying. USE - Preparation of high energy density graphene battery anode material. ADVANTAGE - The preparation method provides graphene battery anode material having wide layer spacing, large specific surface area, and agglomeration resistance. The electrode material has large energy density and excellent cycle stability.