Fig. 8From: Controllable Preparation of V2O5/Graphene Nanocomposites as Cathode Materials for Lithium-Ion Batteries a CV curves of the V/GO-I composite at a scan rate of 0.1 mV s−1. b Rate capability of the V/GO-I composite and the V/GO-II composite at different current densities. c Discharge/charge voltage profiles of the V/GO-I composite at different current rates. d Cycling performance of the V/GO-I composite and the V/GO-II composite at a current rate of 2CBack to article page