▎ 摘　　要

Fe3O4 nanorod graphene composites (FNGC) have been successfully prepared via in situ self-assembly by mild chemical reduction of graphite oxide and (NH4)(2)Fe(SO4)(2) in water with hydrazine as reducing agent under normal pressure. Scanning electron microscopy and transmission electron microscopy observations confirmed that the as-formed Fe3O4 nanorods, about 11 nm in diameter and more than 100 nm in length, were uniformly anchored on graphene nanosheets. Electrochemical investigation showed that the FNGC exhibited improved cycling stability and superior rate capacity in comparison with Fe3O4 nanoparticles. A charge specific capacity of 867 mA h g(-1) was maintained with only 5% capacity loss after the 100th cycle at 1 C. At a current density of 5 C, its charge capacity was 569 mA h g(-1). The results suggested that FNGC is a promising candidate for practical application as lithium ion battery anode material. (c) 2012 Elsevier B.V. All rights reserved.