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ABSTRACT In this study, graphene oxide (GO) is chemically reacted with sodium borohydride (NaBH4) to form reduced graphene oxide (rGO). rGO, polycarbazole (PCz)/rGO and PCz/nanoclay/rGO materials were obtained by chemical… Click to show full abstract
ABSTRACT In this study, graphene oxide (GO) is chemically reacted with sodium borohydride (NaBH4) to form reduced graphene oxide (rGO). rGO, polycarbazole (PCz)/rGO and PCz/nanoclay/rGO materials were obtained by chemical polymerisation method. These three materials were characterised by Fourier-transform infra-red spectroscopy-attenuated transmission reflectance, scanning electron microscopy, energy-dispersive X-ray analysis, cyclic voltammetry (CV), galvanostatic charge–discharge and electrochemical impedance spectroscopy. The PCz/nanoclay/rGO nanocomposite shows significantly improved capacitance (Csp = 187.78 F g−1) compared to that of PCz/rGO (Csp = 74.18 F g−1) and rGO (Csp = 20.78 F g−1) at the scan rate of 10 mV s−1 by CV method. The supercapacitor device performance results show high power density (P = 1057.81 W kg−1) and energy density (E = 1.7 Wh kg−1) obtained from Ragone plot for PCz/nanoclay/rGO material. Stability tests were also examined by the CV method for 1000 cycles. GRAPHICAL ABSTRACT
Journal Title: Plastics, Rubber and Composites
Year Published: 2018
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