Graphene oxide was prepared by the Hummers’ method and then electrochemically reduced to produce graphene
nanosheets. Physicochemical characterizations were performed using XRD, FTIR, FESEM, TEM, Raman and UV-Vis
techniques to elucidate the structure and morphology of the prepared material. The electrochemical study had been
conducted on graphene by cyclic voltammetry, galvanostatic charge-discharge and impedance measurements, indicating its
superb energy storage properties. The specific capacitance of graphene was 131 F g-1 at 0.1 A g-1. Impedance spectra
showed low resistance of electrochemically produced graphene, supporting its suitability for energy storage applications,
such as supercapacitor.
جمعه عبدالجواد محمد على | Gomaa A. M. Ali | 20238