▎ 摘 要
Fe2O3/graphene composite anode materials have been successfully synthesized by a PVP-assisted homogeneous precipitation method. The size of Fe2O3 nanoparticles on the surface of graphene sheets was less than 35 nm. Fe2O3 nanoparticles and graphene sheets formed a network structure. Electrochemical properties were evaluated in two-electrode cells versus metallic lithium. The Fe2O3/graphene composite exhibited excellent electrochemical lithium storage performances. The first discharge and charge capacities were 1600 and 1053 mA h g(-1) at a current density of 100 mA g(-1), and the first coulomb efficiencies was 65.8%. The reversible specific capacity remained 893 mA h g(-1) and the capacity retention was 84.8% after 100 cycles.