RGO:V2O5 nanofibril composite as cathode in lithium-ion battery

Abstract

One of the main components which is used as a cathode in Lithium-ion battery is Vanadium pentoxide [V2O5] nanostructure. 2D nanostructures of V2O5 increases the effective contact area between the electrolyte and active material which increases the storage capacity of Lithium ions and shorten the diffusion distance of the lithium ions .Reduced graphene oxide [RGO] also has the properties to be a cathode in Lithium ion battery. It is reported that the electrically insulating metal oxide nanostructures are absorbed onto RGO to increase the performance of the batteries. Following that, a nanocomposite was made from RGO and V2O5. V2O5 nanostructures were synthesized from ammonium metavanadate. Graphene oxide [GO] were synthesized by modified Hummer's method and then it was reduced to RGO. Nanofibril V2O5 and RGO were mixed together in 1:1 ratio and coated over ITO glass plates by spin coating technique. These films were kept under different temperatures. XRD and FESEM images were analyzed for morphological studies. For electrochemical analysis, cyclic voltammograms were taken for the prepared film as working electrode. Cyclic voltammetry analysis shows that the prepared RGO: V2O5 Nanofibril composite film is best suited for the use in Lithium-ion batteries.