Cited by 262Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsFuel Cells and Related Materials

Stable hydrogen evolution reaction at high current densities via designing the Ni single atoms and Ru nanoparticles linked by carbon bridges

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Yao, Rui, Sun, Kaian, Zhang, Kaiyang, Wu, Yun, Du, Yujie, Zhao, Qiang, Liu, Guang, Chen, Chen +2 more·2024·Nature Communications

Abstract

Continuous and effective hydrogen evolution under high current densities remains a challenge for water electrolysis owing to the rapid performance degradation under continuous large-current operation. In this study, theoretical calculations, operando Raman spectroscopy, and CO stripping experiments confirm that Ru nanocrystals have a high resistance against deactivation because of the synergistic adsorption of OH intermediates (OH ad ) on the Ru and single atoms. Based on this conceptual model, we design the Ni single atoms modifying ultra-small Ru nanoparticle with defect carbon bridging structure (UP-RuNi SAs /C) via a unique unipolar pulse electrodeposition (UPED) strategy. As a result, the UP-RuNi SAs /C is found capable of running steadily for 100 h at 3 A cm −2 , and shows a low overpotential of 9 mV at a current density of 10 mA cm −2 under alkaline conditions. Moreover, the UP-RuNi SAs /C allows an anion exchange membrane (AEM) electrolyzer to operate stably at 1.95 V cell for 250 h at 1 A cm −2 .

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Authors
Yao, R., Sun, K., Zhang, K., Wu, Y., Du, Y., Zhao, Q., Liu, G., Chen, C., Sun, Y., & Li, J.
Affiliations
  • Taiyuan University of Technology (CN)
  • Fuzhou University (CN)
  • Tsinghua University (CN)
  • ShanghaiTech University (CN)
Corresponding author
  • Liu, Guang
  • Sun, Yuhan
  • Li, Jinping
Venue
Nature Communications
Published
2024-03-12
Volume
15
Issue
1
Pages
2218-2218
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4392683916
Cited by
262
References
50
Citations by year
2026: 89 · 2025: 133 · 2024: 40
FWCI
17.47
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
National Natural Science Foundation of China (22075196, 21878204, 22102081, U22A20418)
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 › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
Keywords
hydrogen evolution reaction, ruthenium nanoparticles, water electrolysis, anion exchange membrane water electrolyzer, catalyst deactivation resistance, alkaline electrocatalysis

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