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Nano Convergence
Fig. 4 | Nano Convergence

Fig. 4

From: Selective synthesis of pure cobalt disulfide on reduced graphene oxide sheets and its high electrocatalytic activity for hydrogen evolution reaction

Fig. 4

Catalytic activity for hydrogen evolution reactions. a Polarization curves (iR-corrected) of Pt wires (green), the mixture of cobalt sulfide without GO (black), and CoS2/rGO samples with 1 mg/mL GO (blue) and with 2.3 mg/mL GO (red). b Tafel analysis of the data shown in a. c Electrochemical impedance spectroscopy (EIS) for CoS2/rGO samples. d Long-term stability measurements for CoS2/rGO samples

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