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  Phase Engineering of a Ruthenium Nanostructure toward High-Performance Bifunctional Hydrogen Catalysis

Li, L., Liu, C., Liu, S., Wang, J., Han, J., Chan, T.-S., et al. (2022). Phase Engineering of a Ruthenium Nanostructure toward High-Performance Bifunctional Hydrogen Catalysis. ACS Nano, 1-10. doi:10.1021/acsnano.2c05776.

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 Creators:
Li, Leigang1, Author
Liu, Cheng1, Author
Liu, Shangheng1, Author
Wang, Juan1, Author
Han, Jiajia1, Author
Chan, Ting-Shan1, Author
Li, Youyong1, Author
Hu, Zhiwei2, Author           
Shao, Qi1, Author
Zhang, Qiaobao1, Author
Huang, Xiaoqing1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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Free keywords: Fuel cell, HER, HOR, Phase engineering, Ruthenium
 Abstract: The physicochemical properties and catalytic performance of transition metals are highly phase-dependent. Ru-based nanomaterials are superior catalysts toward hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR), but studies are mostly limited to conventional hexagonal-close-packed (hcp) Ru, mainly arising from the difficulty in synthesizing Ru with pure face-centered-cubic (fcc) phase. Herein, we report a crystal-phase-dependent catalytic study of MoOx-modified Ru (MoOx-Ru fcc and MoOx-Ru hcp) for bifunctional HER and HOR. MoOx-Ru fcc is proven to outperform MoOx-Ru hcp in catalyzing both HER and HOR with much higher catalytic activity and more durable stability. The modification effect of MoOx gives rise to optimal adsorption of H and OH especially on fcc Ru, which thus has resulted in the superior catalytic performance. This work highlights the significance of phase engineering in constructing superior electrocatalysts and may stimulate more efforts on phase engineering of other metal-based materials for diversified applications. ©

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Language(s): eng - English
 Dates: 2022-08-232022-08-23
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acsnano.2c05776
 Degree: -

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Title: ACS Nano
  Other : ACS Nano
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 1 - 10 Identifier: ISSN: 1936-0851
CoNE: https://pure.mpg.de/cone/journals/resource/1936-0851