Proton trade membrane water electrolysis is a key expertise for sustainable hydrogen manufacturing, but its widespread deployment is severely constrained by the reliance on scarce and costly iridium-based oxygen evolution response (OER) catalysts. Ru oxide-based catalysts have emerged as a promising different owing to their intrinsically excessive OER exercise and comparatively decrease price. Nevertheless, their sensible software is basically restricted by speedy degradation underneath acidic and extremely oxidative situations. This instability originates from the intrinsic coupling between lattice-oxygen-driven response pathways, cation demetallation, and dynamic structural reconstruction throughout oxygen evolution. On this assessment, we current a mechanistic overview of dopant-driven methods for stabilizing Ru-based electrocatalysts underneath water electrolysis. We summarize how dopant incorporation modulates Ru-O bonding, lattice oxygen reactivity, and response pathway choice, thereby suppressing Ru dissolution and structural collapse. Dopant results are mentioned by way of lattice and section stabilization in addition to digital and chemical modulation, encompassing substitutional, interstitial, and atomically dispersed dopants. By correlating mechanistic insights from operando spectroscopy and dissolution analyses with reported sturdiness traits, this assessment establishes dopant engineering as a unifying design framework for reconciling exercise and stability in Ru-based oxygen evolution catalysts.
