Fig. 11. CVs of the NiCo/ErN-GO/CCE in 0.1 M KOH solution in the presence of different methanol concentrations (a) and 0.1 M KOH solution in the presence of different ethanol concentrations (b). Inset (I) and (II) show dependency of the peak potential and anodic peak current densities on the concentration of methanol and ethanol in solution, respectively.
