Enhanced electrochemical properties of (V2O5/GO) composite electrodes for high-performance supercapacitor applications

Herein, we reported the solution-based techniques to attach vanadium pentoxide (V 2 O 5 ) to graphene oxide (GO) nanosheets. The composite has been checked for its improved hybrid super capacitive performance. The addition of the GO to V 2 O 5 significantly enhances the nanocomposite electrochemical performance. The composites demonstrate markedly high specific capacitance up to 438.1 Fg −1 at 1 Ag −1 . Moreover, the supercapacitor electrodes provide high energy density and improved retention capacitance. The introduction of GO in the composites increases the surface area by providing a highly conductive path and functional surface to attach V 2 O 5 nanoparticles. The performance of the VG-3 sample electrode remained excellent electrochemically. These findings suggest that vanadium pentoxide/graphene oxide (VG) composites may be an effective active material for supercapacitor electrodes. Graphical abstract