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

“Facilitating alkaline hydrogen evolution reaction on the hetero-interfaced Ru/RuO2 through Pt single atoms doping” (2024), by Yiming Zhu et al. Energy research paper. Original abstract below, unchanged. A free PDF is available.

- Authors: Yiming Zhu, Malte Klingenhof, Chenlong Gao, Toshinari Koketsu, Gregor Weiser, Yecan Pi, Shangheng Liu, Lijun Sui, Jingrong Hou, Jiayi Li et al.
- Published: February 16, 2024
- Field: Energy
- DOI: https://doi.org/10.1038/s41467-024-45654-9
- Free PDF: https://www.nature.com/articles/s41467-024-45654-9.pdf

## 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/RuO 2 support (referred to as Pt-Ru/RuO 2 ), 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 2 while Pt SAs and the metallic Ru facilitate the subsequent H* combination. Theoretical calculations correlate with the experimental findings. Furthermore, Pt-Ru/RuO 2 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.

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