Reorganization of interfacial water structure boosts OH- transfer by engineering charge redistribution towards an efficient alkaline HER
发布时间：2025-07-18
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- DOI码：
- 10.1039/D5TA03786G
- 发表刊物：
- Journal of Materials Chemistry A
- 摘要：
- The structure of interfacial water and key intermediates significantly influences the electrochemical performances. Herein, doping strategy is applied to induce charge redistribution within the substrate, which changes local electron field of the whole catalyst. Boron organic polymers are selected as B and N sources to fabricate the Ru NPs dispersed on the BCN substrate (Ru/BCN), which are assembled through Cs2[closo-B12H12] and 4,4'-bipyridine. Through a combination of in situ surface-enhanced infrared absorption spectroscopy and density functional theory (DFT) calculations, local electron field of substrate has been redistributed by the synergistic effect of B and N, which not only modulates the electron density of Ru sites to decrease OH adsorption, but also increases the flexibility of water hydrogen network for aiding OH transfer. Besides, the charge redistribution also increases metal-support interaction, boosting charge transfer efficiency in the HER process. As a result, Ru/BCN drives 17 mV to achieve 10 mA cm-2. This work provides a new insight to engineer charge redistribution to modulate the structure of interfacial water and key HER intermediates in alkaline HER.
- 页面范围：
- https://doi.org/10.1039/D5TA03786G
- 是否译文：
- 否
- 发表时间：
- 2025-07-16