▎ 摘　　要

Hydrated vanadium pentoxide (V2O5 center dot 0.86H(2)O) nanoribbons modified with reduced graphene oxide (RGO) are synthesized by a hydrothermal process. These ribbons are 30 nm thick, 200 nm to 1 mu m wide and above 50 mu m long. Binder-free films are prepared by using these ribbons and annealed at 300 degrees C in nitrogen as the cathode for rechargeable lithium cells. The intertwining network of this free-standing VOx/RGO film provides efficient conduction pathways for electrons and short diffusion distances for Li ions. The electrochemical tests exhibit that this cathode film delivers a high reversible specific capacity (160 mAh g(-1)) and good cycling stability (133 mAh g(-1) after 200 cycles) in the voltage range between 2.0 and 3.5 V. (C) 2013 Elsevier B.V. All rights reserved.