Oxygen evolution electrocatalysts for proton exchange membrane water electrolysis encounter degradation even at moderate cell potentials. Piñeiro-García and colleagues develop a quaternary Sn-Sb-Mo-W mixed oxide scaffold to protect RuO2 against early dissolution under harsh acid conditions, extending the lifetime of catalysts as well as the titanium supports used in water electrolysis cells.
- Alexis Piñeiro-García
- Xiuyu Wu
- Eduardo Gracia-Espino
