fig7

Figure 7. (A) Synthesis of ultra-large Fe-cyano NSs via directional freezing. (B) EDLC of blank CFP electrode, Fe-cyano bulk, and NS electrocatalysts. Inset of (B) CAs of (i) blank CFP electrode, (ii) Fe-cyano bulk, and (iii) NS electrocatalysts. (C) Poisoning experiment on Fe-cyano-R NSs. (D) H₂O and NO₃^- adsorption on Fe⁰. (E) Ammonia yield rate and Faradaic efficiency (FE) at various potentials on Fe-cyano NSs. (F) Stability of electrolyzer. Reprinted with permission from Ref.^[100]. Copyright 2022 American Chemical Society^[100].