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Cited by 262Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsCatalytic Processes in Materials Science

Competitive Adsorption: Reducing the Poisoning Effect of Adsorbed Hydroxyl on Ru Single‐Atom Site with SnO 2 for Efficient Hydrogen Evolution

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Zhang, Jiachen, Chen, Guangbo, Liu, Qicheng, Fan, Chuang, Sun, Dongmei, Tang, Yawen, Sun, Hanjun, Feng, Xinliang·2022·Angewandte Chemie International Edition
DOI 10.1002/anie.202209486PMC PMC9804859
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Abstract

Abstract Ruthenium (Ru) has been theoretically considered a viable alkaline hydrogen evolution reaction electrocatalyst due to its fast water dissociation kinetics. However, its strong affinity to the adsorbed hydroxyl (OH ad ) blocks the active sites, resulting in unsatisfactory performance during the practical HER process. Here, we first reported a competitive adsorption strategy for the construction of SnO 2 nanoparticles doped with Ru single‐atoms supported on carbon (Ru SAs‐SnO 2 /C) via atomic galvanic replacement. SnO 2 was introduced to regulate the strong interaction between Ru and OH ad by the competitive adsorption of OH ad between Ru and SnO 2 , which alleviated the poisoning of Ru sites. As a consequence, the Ru SAs‐SnO 2 /C exhibited a low overpotential at 10 mA cm −2 (10 mV) and a low Tafel slope of 25 mV dec −1 . This approach provides a new avenue to modulate the adsorption strength of active sites and intermediates, which paves the way for the development of highly active electrocatalysts.

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  • In alkaline HER, excessive *OH coverage can block active sites and impede both water dissociation and *H recombination steps.

    “In alkaline HER, excessive *OH coverage can block active sites and impede both water dissociation and *H recombination steps.57,58”

    From High-Entropy Alloy Aerogels with High-Density Solid–Solid Heterointerfaces for Alkaline Hydrogen Evolution (2026) · cites this paper as [58]

    The Introduction says strongly bound adsorbed OH poisons Ru active sites needed for water re-adsorption and slows the Volmer step. Results and Discussion says relieving that poisoning improves water dissociation and frees sites for H adsorption. It does not establish that OH coverage impedes the H-recombination step specifically. (LLM, conf=0.82)

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Cited by

Sorted by citations

Authors
Zhang, J., Chen, G., Liu, Q., Fan, C., Sun, D., Tang, Y., Sun, H., & Feng, X.
Affiliations
  • Nanjing Normal University (CN)
  • Center for Advancing Electronics Dresden (DE)
  • Max Planck Institute of Microstructure Physics (DE)
Corresponding author
  • Sun, Hanjun
  • Feng, Xinliang
ORCID
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2022-08-24
Volume
61
Issue
39
Pages
e202209486-e202209486
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
DOI
10.1002/anie.202209486
PMC
PMC9804859
OpenAlex
W4286447950
Cited by
262
References
3
Citations by year
2026: 37 · 2025: 77 · 2024: 80 · 2023: 60 · 2022: 8
FWCI
10.13
Type
journal article
Language
en
Open access
Licence
Locations
  • Angewandte Chemie International Edition (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Qucosa (Saxon State and University Library Dresden) (submittedVersion, cc-by-nc-nd)
Funders
  • National Key Research and Development Program of China (2021YFA1502700)
  • Natural Science Foundation of Jiangsu Province (No. BK20220369)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
Keywords
competitive adsorption, ruthenium single-atom catalysts, SnO2 nanoparticles, hydrogen evolution reaction, water dissociation, carbon-supported electrocatalysts

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