Single Crystalline V2O5 Nanowire/Graphene Composite as Cathode Material for Lithium-Ion Batteries

Qing He; Dong Lin Zhao; Yang Yang Zhu; Jing Xing Zhang

doi:10.4028/www.scientific.net/AMR.873.575

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Single Crystalline V₂O₅ Nanowire/Graphene Composite as Cathode Material for Lithium-Ion Batteries

Abstract:

The single crystalline V₂O₅ nanowire/graphene nanosheets (GNS) composite has been successfully prepared via an easy and facile one-step hydrothermal synthesis method. The morphology, structure and electrochemical performance of V₂O₅ nanowire/GNS composite as cathode material for lithium-ion batteries were systematically investigated by transmission electron microscope, X-ray diffraction and a variety of electrochemical testing techniques. The V₂O₅ single crystalline nanowires were supported on the GNS substrate and exhibited excellent electrochemical properties. When used as a cathode material of lithium-ion batteries, the composite material revealed high initial discharge capacities and exceptional rate capacities. It was found that V₂O₅ nanowire/GNS composite exhibited a relatively high reversible capacity of 357 mA h g^-1 and fine cycle performance.