fig3

Figure 3. OER catalytic performance of Mo/F-NiFe₂O₄. (A) Polarization curves; (B) Histogram of overpotentials at current densities of 50.0 and 100.0 mA cm^-2; (C) Tafel plots; (D) Dot-line plots of C_dl (blue), and j_K^norm (red) at potential of 1.48 V; (E) Nyquist plots; (F) Time-dependent potential curves at a constant current density of 100 mA cm^-2 for over 130 h; (G) A comprehensive comparison of with recently reported other catalysts.