fig5

Figure 5. (A) LSV curves, (B) Corresponding overpotentials at 10 mA cm^-2 (η₁₀), and (C) Tafel plots of Se@NiFe, FePc/Se@NiFe, FePc/Se@Ni, FePc/Se@Fe and RuO₂ in O₂-saturated 1.0 M KOH. (D) LSV recorded before and after ADT for 5,000 cycles and (E) OER I-T tests of FePc/Se@NiFe and RuO₂ at overpotential. (F) Polarization curves of FePc/Se@NiFe for dual-functional catalytic activity. (G) Dual-functional electrocatalytic activity of the FePc/Se@NiFe, Pt/C + RuO₂, and the previously reported electrocatalysts based on transition metal selenides.