fig8

Figure 8. (A) The element maps and (B) Fe K-edge XANES spectra of Fe-N_x/NAC. LSV polarization curves of (C) Fe-N_x/NAC, (D) NAC, and (E) FeO_x/AC in 0.5 M NaClO₄ with different NaCl concentrations at 1,600 rpm. (F) The structure of Fe-N₄/NAC adsorbing O₂, OH^-, and Cl^- calculated by DFT (H: white; O: red; Cl: green). (G) DFT calculation results of adsorption free energy of O₂ on Pt (111) and Fe-N₄/NAC. (H) The reaction-free energies of Cl^- desorption and OH^- desorption from Pt (111) phase and Fe-N₄/NAC at α(Cl^-) = 0.5 mol L^-1 and pH = 7. (Reproduced with permission^[100]. Copyright 2022, Elsevier).