Heteroatom dopants overcome the activity-stability trade-off in RuO₂ for acidic oxygen evolution.

ABSTRACT: The pursuit of RuO₂ as an alternative acidic oxygen evolution reaction electrocatalyst to IrO₂ holds great promise, yet simultaneously achieving highly active and stable RuO₂ remains an urgent challenge, as conventional strategies often boost one property at the expense of the other. Here, we successfully construct Ta and B co-doped nanoporous RuO₂ with Ru-O-Ta frameworks and Ru-O-B active sites to overcome the activity-stability trade-off. The Ru-O-Ta frameworks stabilize the Ru sites by mediating bridging oxygen and preferentially replenishing oxygen vacancies, thereby facilitating the oxygen evolution reaction through the adsorbate evolution mechanism. Concurrently, the Ru-O-Ta/B sites not only switch the rate-determining step but also lower t

SUBMITTER: Zheng W 

PROVIDER: S-EPMC12279930 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature