Figure 4.

NRR electrochemical performances of FeMoPPc in 0.1 m KOH. a) Linear sweep voltammetry curves in N₂ (orange line) and Ar‐saturated (black line) KOH solutions. b) Chronoamperometry results at different potentials. c) NH₃ yield rate and Faradaic efficiency at the corresponding potentials. d) NH₃ yield rate and Faradaic efficiency of MoPPc, FePPc, and FeMoPPc in N₂‐saturated 0.1 m KOH solution at −0.3 V for 2h, respectively. e) Cycling test of FeMoPPc for the NRR at −0.3 V. f) ¹H NMR analysis of the electrolyte fed by ¹⁴N₂ and ¹⁵N₂ after the electrolytic reaction.