▎ 摘　　要

NOVELTY - A nano-iron phosphate/graphene composite material contains graphene as carrier, and hollow ball-shaped nano-iron phosphate formed on graphene. USE - Nano-iron phosphate/graphene composite material used as anode material for lithium ion secondary battery. ADVANTAGE - The lithium ion secondary battery using nano-iron phosphate/graphene composite material has excellent conductivity and discharging stability, and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of nano-iron phosphate/graphene composite material, which involves performing hydrothermal reaction of mixing liquid containing graphene oxide, ammonium ferrous sulfate hexahydrate and phosphoric acid, urea as precipitator and sodium lauryl sulfate as surfactant at 60-120 degrees C, washing and drying.