Ru–W Pair Sites Enabling the Ensemble Catalysis for Efficient Hydrogen Evolution

Autor: Weilong Ma, Xiaoyu Yang, Dingding Li, Ruixin Xu, Liangpeng Nie, Baoping Zhang, Yi Wang, Shuang Wang, Gang Wang, Jinxiang Diao, Lirong Zheng, Jinbo Bai, Kunyue Leng, Xiaolin Li, Yunteng Qu
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Advanced Science, Vol 10, Iss 26, Pp n/a-n/a (2023)
Druh dokumentu: article
ISSN: 2198-3844
20230311
DOI: 10.1002/advs.202303110
Popis: Abstract Simultaneously optimizing elementary steps, such as water dissociation, hydroxyl transferring, and hydrogen combination, is crucial yet challenging for achieving efficient hydrogen evolution reaction (HER) in alkaline media. Herein, Ru single atom‐doped WO2 nanoparticles with atomically dispersed Ru–W pair sites (Ru–W/WO2‐800) are developed using a crystalline lattice‐confined strategy, aiming to gain efficient alkaline HER. It is found that Ru–W/WO2‐800 exhibits remarkable HER activity, characterized by a low overpotential (11 mV at 10 mA cm−2), notable mass activity (5863 mA mg−1 Ru at 50 mV), and robust stability (500 h at 250 mA cm−2). The highly efficient activity of Ru–W/WO2‐800 is attributed to the synergistic effect of Ru–W sites through ensemble catalysis. Specifically, the W sites expedite rapid hydroxyl transferring and water dissociation, while the Ru sites accelerate the hydrogen combination process, synergistically facilitating the HER activity. This study opens a promising pathway for tailoring the coordination environment of atomic‐scale catalysts to achieve efficient electro‐catalysis.
Databáze: Directory of Open Access Journals
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