Oxidation-resistant AgRuIr alloy nanocages for efficient and enduring oxygen evolution in proton exchange membrane electrolysis (opens in new tab)

The global transition to a hydrogen economy relies on efficient and durable catalysts for the oxygen evolution reaction within proton exchange membrane water electrolysis. Conventional metal oxide catalysts, particularly RuO2, suffer from overoxidation and corrosion under acidic and high-potential conditions, limiting operational lifetime. Here we report a metallic catalyst composed of metastable AgRuIr alloy nanocages that challenge the prevailing view that metallic materials are unsuitable ...