▎ 摘　　要

Thermally oxidized graphene (TGO) with an increased specific surface area is prepared by a simple thermal treatment of graphene raw material in an air-nitrogen atmosphere. Based on the mutual electrostatic attraction, plenty of Fe(OH)3 nanoparticles are absorbed on TGO. And then Fe2O3/TGO composite is fabricated by a hydrothermal method. The Fe2O3/TGO composite maintains a specific capacity of 862.1 mA h g-1 after 200 cycles at a current density of 0.5 A g-1, which exceeds the sum capacity of Fe2O3 (72.0 mA h g-1) and TGO (225.1 mA h g-1). The highly electronic conductive TGO with high specific surface area can compensate for the poor electronic conductivity of anchoring Fe2O3 and buffer the volume expansion during cycling. The preparation technology of TGO is novel, which is different from Hummer's method and modified Hummer's method. It suggests a potential for TGO loading other metal oxides, metallic monomers and non-metallic monomers and using as anodes for lithium-ion battery.