fig6

Figure 6. Precious metal-based electrocatalysts for OER in AEMWE. (A) Scheme of the fabrication procedure for Ru-O/N-C-NH₃^[58]. Copyright 2023 John Wiley & Sons; (B) Schematic illustrating the structure and corrosion-resistant approach of RuMoNi electrocatalyst; (C) Polarization curves of the AEM water electrolyzer with RuMoNi in 1.0 M KOH + seawater at 20 °C and 6.0 M KOH + seawater at 60 °C; (D) Long-term stability test of the AEM water electrolyzer using RuMoNi at 500 mA cm^-2 in a 1.0 M KOH + seawater electrolyte; (E) Performance comparison of the RuMoNi-catalyzed electrolyzer with other reported AEM seawater electrolyzers^[130]. Copyright 2023 Springer Nature; Durability tests for Co_3-xPd_xO₄ catalysts on MnO₂-coated Ni foam substrates at (F) 200 mA cm^-2 and (G) 1 A cm^-2 in natural seawater electrolyte^[131]. Copyright 2023 John Wiley & Sons. AEMWE: Anion exchange membrane water electrolysis; OER: oxygen evolution reaction; AEM: anion exchange membrane.