Journal
ADVANCED ENERGY MATERIALS
Volume 9, Issue 20, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201803913
Keywords
electrocatalysts; hydrogen evolution reaction; pulsed laser ablation; single-atom alloys; synergistic effect
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Funding
- Natural Science Foundation of China [51871160, 51671141, 51471115, 51402084, 51471079]
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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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