fig4

Figure 4. Electrochemical performance of the obtained samples. (A) Geometrical area normalized LSV curves, (B) Tafel plots, (C) EIS, and (D) EASA results of (FeCoNiCuZn)N (red) and (Co)N (blue) modified glass carbon electrodes; (E) Multi-potential steps (left, orange) and multi-current steps (right, blue) of (FeCoNiCuZn)N; (F) Chronopotentiometry curve of (FeCoNiCuZn)N modified Ni foam at current density located at 400 mA cm^-2 for 30 h.