▎ 摘　　要

TiO2/Graphene nanocomposites was synthesized through solvothermal method with butyl titanate as TiO2 precursor. The character of nanocomposites was measured by scanning electron microscope (SEM), thermogravimetry (TG), X-ray diffraction (XRD) and electrochemical measurements. The result shows that TiO2 nanoparticles are uniformly wrapped in the graphene sheets. The graphene content of TiO2/Graphene nanocomposite is 24.67wt%. When the TiO2/Graphene nanocomposites are used as anode materials for lithium-ion battery, the initial discharge capacity of the nanocomposite electrode is 384.35 mAh/g at a current rate of 2C. It delivers a capacity of 130.26 mAh/g after 100 charge-discharge cycles, 2.93 times as high as that of the pure TiO2 nanoparticles electrode. The charge transfer resistance of the nanocomposites is lower than that of TiO2. The nanocomposite electrode exhibits good rate capability and excellent electrochemical performance as compared with the pure TiO2 electrode.