Fig. 2: Electrochemical characterization of the Ni(Cu)VOx electrode.
From: Implanting Ni-O-VOx sites into Cu-doped Ni for low-overpotential alkaline hydrogen evolution
a LSV curves and b Tafel plots for Ni(Cu)VOx and control samples without iR compensation. The black dotted curve is the HER activity on Ni(Cu)VOx electrode with iR correction. c Chronopotentiometric curve of Ni(Cu)VOx in comparison with Ni(Cu). d Catalytic activity comparison after long-term stability. e ICP-OES analysis of vanadium in 1.0 M KOH solution during the 110 h HER measurement. f EIS spectra of the prepared electrodes. All the electrochemical results were carried out in 1.0 M KOH.
