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Fig. 4 | Nanoscale Research Letters

Fig. 4

From: Evaluation of Graphene/WO3 and Graphene/CeO x Structures as Electrodes for Supercapacitor Applications

Fig. 4

Electrochemical characterization. Detailed legend: a CV measurements of the cell consisted of electrodes with three layers of graphene/CeO2 particles each, at different scan rates. b Interfacial capacitance of the different hybrid electrodes at different scan rates. All devices present the higher capacitance at the lower scan rates. c Histogram with the percentage increase of capacitance with respect to number of layers. d Ragone plot demonstrating the overall performance of the graphene-based supercapacitors

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