▎ 摘　　要

High capacity Fe3O4 nanorod/graphene composites with good rate capability were prepared by a two-step synthesis process: FeOOH/graphene composites were first synthesized by uniformly dispersed, hydrothermal prepared FeOOH nanorods on functionalized graphene sheets, and then they were annealed in an argon atmosphere at 450 degrees C for 2 h to make Fe3O4/graphene composites. The graphene functions as a reducing reagent during the annealing process. Thus synthesized Fe3O4 nanorods with small diameters ranging from 50 nm to 100 nm have an intimate electrical contact with graphene sheet and exhibit excellent electrochemical properties. The Fe3O4 nanorod/graphene nanocomposite shows a superior high reversible specific capacity (1155 mAh g(-1)) and good rate capability, demonstrating it is a promising alternative electrode material for high-performance lithium-ion batteries.