Facilitating alkaline hydrogen evolution reaction on the hetero-interfaced Ru/RuO2 through Pt single atoms doping

Yiming Zhu, Malte Klingenhof, Chenlong Gao, Toshinari Koketsu, Gregor Weiser, Yecan Pi, Shangheng Liu, Lijun Sui, Jingrong Hou, Jiayi Li, Haomin Jiang, Limin Xu, Wei-Hsiang Huang, Chih-Wen Pao, Menghao Yang (), Zhiwei Hu (), Peter Strasser () and Jiwei Ma ()
Additional contact information
Yiming Zhu: Tongji University
Malte Klingenhof: Technische Universität Berlin, Department of Chemistry
Chenlong Gao: Tongji University
Toshinari Koketsu: Technische Universität Berlin, Department of Chemistry
Gregor Weiser: Technische Universität Berlin, Department of Chemistry
Yecan Pi: Yangzhou University
Shangheng Liu: Xiamen University
Lijun Sui: Tongji University
Jingrong Hou: Tongji University
Jiayi Li: Tongji University
Haomin Jiang: Baoshan Iron & Steel Co., Ltd.
Limin Xu: Baoshan Iron & Steel Co., Ltd.
Wei-Hsiang Huang: National Synchrotron Radiation Research Center
Chih-Wen Pao: National Synchrotron Radiation Research Center
Menghao Yang: Tongji University
Zhiwei Hu: Max Planck Institute for Chemical Physics of Solids
Peter Strasser: Technische Universität Berlin, Department of Chemistry
Jiwei Ma: Tongji University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Exploring an active and cost-effective electrocatalyst alternative to carbon-supported platinum nanoparticles for alkaline hydrogen evolution reaction (HER) have remained elusive to date. Here, we report a catalyst based on platinum single atoms (SAs) doped into the hetero-interfaced Ru/RuO2 support (referred to as Pt-Ru/RuO2), which features a low HER overpotential, an excellent stability and a distinctly enhanced cost-based activity compared to commercial Pt/C and Ru/C in 1 M KOH. Advanced physico-chemical characterizations disclose that the sluggish water dissociation is accelerated by RuO2 while Pt SAs and the metallic Ru facilitate the subsequent H* combination. Theoretical calculations correlate with the experimental findings. Furthermore, Pt-Ru/RuO2 only requires 1.90 V to reach 1 A cm−2 and delivers a high price activity in the anion exchange membrane water electrolyzer, outperforming the benchmark Pt/C. This research offers a feasible guidance for developing the noble metal-based catalysts with high performance and low cost toward practical H2 production.

Date: 2024
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DOI: 10.1038/s41467-024-45654-9

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