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
Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, 201804, Shanghai, China.
Technische Universität Berlin, Department of Chemistry, 10623, Berlin, Germany.
Nat Commun. 2024 Feb 16;15(1):1447. doi: 10.1038/s41467-024-45654-9.
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/RuO support (referred to as Pt-Ru/RuO), 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 RuO while Pt SAs and the metallic Ru facilitate the subsequent H* combination. Theoretical calculations correlate with the experimental findings. Furthermore, Pt-Ru/RuO only requires 1.90 V to reach 1 A cm 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 production.
迄今为止，探索一种用于碱性析氢反应（HER）的、替代碳载铂纳米颗粒的活性且具有成本效益的电催化剂仍然难以实现。在此，我们报道了一种基于掺杂到异质界面Ru/RuO载体中的铂单原子（SAs）的催化剂（称为Pt-Ru/RuO），与商业Pt/C和Ru/C相比，其在1 M KOH中具有低HER过电位、优异的稳定性和显著增强的基于成本的活性。先进的物理化学表征表明，RuO加速了缓慢的水离解，而Pt单原子和金属Ru促进了随后的H*结合。理论计算与实验结果相关。此外，Pt-Ru/RuO仅需1.90 V即可达到1 A cm ，并在阴离子交换膜水电解槽中具有高价格活性，优于基准Pt/C。这项研究为开发高性能、低成本的贵金属基催化剂用于实际制氢提供了可行的指导。
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