Ruthenium‐Based Single‐Atom Alloy with High Electrocatalytic Activity for Hydrogen Evolution

作者：Cui‐Hong Chen, Deyao Wu, Zhe Li, Rui Zhang, Chunguang Kuai, Xueru Zhao, Cunku Dong, Shi‐Zhang Qiao, Hui Liu, Xi‐Wen Du · 发表于：Advanced Energy Materials · 年份：2019 · DOI：10.1002/aenm.201803913 · 被引用次数：385 · 研究领域：Electrocatalysts for Energy Conversion、Electrochemical Analysis and Applications、Catalytic Processes in Materials Science

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.