Ruthenium-based single-atom alloy with high electrocatalytic activity for hydrogen evolution
Date
2019
Authors
Chen, C.H.
Wu, D.
Li, Z.
Zhang, R.
Kuai, C.G.
Zhao, X.R.
Dong, C.K.
Qiao, S.Z.
Liu, H.
Du, X.W.
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Journal article
Citation
Advanced Energy Materials, 2019; 9(20):1803913-1-1803913-7
Statement of Responsibility
Cui-Hong Chen, Deyao Wu, Zhe Li, Rui Zhang, Chun-Guang Kuai, Xue-Ru Zhao, Cun-Ku Dong, Shi-Zhang Qiao, Hui Liu and Xi-Wen Du
Conference Name
Abstract
Highly efficient and stable catalysts for the hydrogen evolution reaction, especially in alkaline conditions are crucial for the practical demands of electrochemical water splitting. Here, the synthesis of a novel RuAu single‐atom alloy (SAA) by laser ablation in liquid is reported. The SAA exhibits a high stability and a low overpotential, 24 mV@10 mA cm⁻², which is much lower than that of a Pt/C catalyst (46 mV) in alkaline media. Moreover, the turnover frequency of RuAu SAA is three times that of Pt/C catalyst. Density functional theory computation indicates the excellent catalytic activity of RuAu SAAs originates from the relay catalysis of Ru and Au active sites. This work opens a new avenue toward high‐performance SAAs via fast quenching of immiscible metals.
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© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim