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

Zhu, Yiming; Klingenhof, Malte; Gao, Chenlong; Koketsu, Toshinari; Weiser, Gregor; Pi, Yecan; Liu, Shangheng; Sui, Lijun; Hou, Jingrong; Li, Jiayi; Jiang, Haomin; Xu, Limin; Huang, Wei-Hsiang; Pao, Chih-Wen; Yang, Menghao; Hu, Zhiwei; Strasser, Peter; Ma, Jiwei

doi:10.1038/s41467-024-45654-9

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

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Hu, Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Zhu, Y., Klingenhof, M., Gao, C., Koketsu, T., Weiser, G., Pi, Y., et al. (2024). Facilitating alkaline hydrogen evolution reaction on the hetero-interfaced Ru/RuO₂ through Pt single atoms doping. Nature Communications, 15: 1447, pp. 1-13. doi:10.1038/s41467-024-45654-9.

Cite as: https://hdl.handle.net/21.11116/0000-000F-1A0C-8

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 H-2 production.