Ni-doped vanadium pentoxide/graphene(Ni-V2 O5/graphene)composites have great potential as electrode material for su-percapacitors.Ni-V2 O5/graphene composites were prepared as a positive electrode material for supercapacitors by simple and controlla-ble hydrothermal reaction with graphene and nickel-doped vanadium pentoxide.The morphology,structure and electrochemical per-formance of Ni-V2 O5/graphene were analyzed.The SEM results show that Ni-V2 O5 particles are uniformly distributed on the crumpled graphene.The electrochemical performance analysis shows that the specific capacitance of Ni-V2 O5/graphene composite is 682 F/g when the current density is 2 A/g,which is better than the specific capacitance of single metal composite V2 O5/graphene is 564 F/g.
维普
万方数据