Bifunctional WC‐Supported RuO2 Nanoparticles for Robust Water Splitting in Acidic Media

作者：Sun ShuChao; Jiang Hao; Chen ZiYao; Chen Qing; Ma MingYuan; Zhen Liang; Song Bo; Xu ChengYan

来源：Angewandte Chemie, 2022, 134(21).

DOI：10.1002/ANGE.202202519

• Acidic Water Splitting
• Bifunctional Electrocatalysts
• Supported Electrocatalysts
• Transition Metal Carbide

We report the strong catalyst–support interaction in WC‐supported RuO2 nanoparticles (RuO2‐WC NPs) anchored on carbon nanosheets with low loading of Ru (4.11?wt.%), which significantly promotes the oxygen evolution reaction activity with a η10 of 347?mV and a mass activity of 1430?A?gRu?1, eight‐fold higher than that of commercial RuO2 (176?A?gRu?1). Theoretical calculations demonstrate that the strong catalyst–support interaction between RuO2 and the WC support could optimize the surrounding electronic structure of Ru sites to reduce the reaction barrier. Considering the likewise excellent catalytic ability for hydrogen production, an acidic overall water splitting (OWS) electrolyzer with a good stability constructed by bifunctional RuO2‐WC NPs only requires a cell voltage of 1.66?V to afford 10?mA?cm?2. The unique 0D/2D nanoarchitectures rationally combining a WC support with precious met...

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  哈尔滨工业大学