▎ 摘　　要

Fe3O4/reduced graphene oxide (RGO) nanocomposite powders were directly synthesized by solution combustion method using ferric nitrate and graphene oxide as oxidants and glycine as fuel at fuel to oxidant ratio of 1. The structural, microstructural, and electrochemical properties were investigated as a function of RGO contents. The Fe3O4 nanoparticles were dispersed on the RGO nanosheets, forming a honeycomb-like microstructure. With the increase of RGO nanosheets, the specific surface areas and pore volume increased from 20.5 to 170 m(2)/g and from 0.06 to 0.80 cm(3)/g, respectively, due to the open structure of RGO sheets. The Fe3O4-18 wt% RGO nanocomposite exhibited a high reversible capacity of similar to 700 mAh g(-1) at a current density of 1 A g(-1) and excellent cycling stability with a capacity retention of 95% following 250 cycles. The superior electrochemical performance of Fe3O4/RGO nanocomposites was attributed to the hierarchical porous structure of RGO nanosheets. The microstructural features benefitted from shortening the diffusion path of Li+ and preventing the aggregation of Fe3O4 nanoparticles.