Electrochemical investigation of graphene/nanoporous carbon black for supercapacitors

In this paper, mixing effect of nanoporous carbon black (NCB) and graphene nanosheets (GNS) on surface morphology and electrochemical performance of prepared electrodes were investigated. 80:10:10 (NCB:GNS:PTFE) prepared electrodes show a maximum specific capacitance as high as 10.22 F g−1 in 3 M NaCl electrolyte. Addition of nanoporous carbon black increases outer to total charge stored (qO⁎/qT⁎) on the electrode from 0.024 to 0.037 which confirms the higher current response and higher voltage reversal at the end potentials.