A Co-Doped Nanorod-like RuO₂ Electrocatalyst with Abundant Oxygen Vacancies for Acidic Water Oxidation.

ABSTRACT: Active and highly stable electrocatalysts for oxygen evolution reaction (OER) in acidic media are currently in high demand as a cleaner alternative to the combustion of fossil fuels. Herein, we report a Co-doped nanorod-like RuO₂ electrocatalyst with an abundance of oxygen vacancies achieved through the facile, one-step annealing of a Ru-exchanged ZIF-67 derivative. The compound exhibits ultra-high OER performance in acidic media, with a low overpotential of 169 mV at 10 mA cm^-2 while maintaining excellent activity, even when exposed to a 50-h galvanostatic stability test at a constant current of 10 mA cm^-2. The dramatic enhancement in OER performance is mainly attributed to the abundance of oxygen vacancies and modulated electronic structure of the Co-dope

SUBMITTER: Tian Y 

PROVIDER: S-EPMC6941840 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature