fig7

Figure 7. Ni-based electrocatalysts for OER in AEMWE. (A) Schematic illustration of the conventional electrode and unified electrode; (B) Polarization curves of AEM water electrolyzer based on the unified electrode^[132]. Copyright 2022 American Chemical Society; (C) in situ Raman spectra of V-NiFeOOH/Ni₃N catalysts in 1 M KOH; (D) Schematic illustration of AEM ultrapure water electrolyzer setup; (E) Polarization curves of AEM water electrolyzer using V-NiFeOOH/Ni₃N catalysts in ultrapure water-electrolyte^[133], Copyright 2022 John Wiley & Sons; (F) Scheme of creating nanofoam-like NiFeM catalysts; Multiple polarization curves of NiFeM catalysts in (G) 0.1 M KOH and (H) pure DI water^[134]. Copyright 2024 John Wiley & Sons. AEMWE: Anion exchange membrane water electrolysis; OER: oxygen evolution reaction; AEM: anion exchange membrane.