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Ruthenium anchored on carbon nanotube electrocatalyst for hydrogen production with enhanced Faradaic efficiency

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  • Do Hyung Kweon

    (School of Energy and Chemical Engineering / Center for Dimension-Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Mahmut Sait Okyay

    (School of Natural Science Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Seok-Jin Kim

    (School of Energy and Chemical Engineering / Center for Dimension-Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Jong-Pil Jeon

    (School of Energy and Chemical Engineering / Center for Dimension-Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Hyuk-Jun Noh

    (School of Energy and Chemical Engineering / Center for Dimension-Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Noejung Park

    (School of Natural Science Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Javeed Mahmood

    (School of Energy and Chemical Engineering / Center for Dimension-Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

  • Jong-Beom Baek

    (School of Energy and Chemical Engineering / Center for Dimension-Controllable Organic Frameworks Ulsan National Institute of Science and Technology (UNIST), 50 UNIST)

Abstract

Developing efficient and stable electrocatalysts is crucial for the electrochemical production of pure and clean hydrogen. For practical applications, an economical and facile method of producing catalysts for the hydrogen evolution reaction (HER) is essential. Here, we report ruthenium (Ru) nanoparticles uniformly deposited on multi-walled carbon nanotubes (MWCNTs) as an efficient HER catalyst. The catalyst exhibits the small overpotentials of 13 and 17 mV at a current density of 10 mA cm–2 in 0.5 M aq. H2SO4 and 1.0 M aq. KOH, respectively, surpassing the commercial Pt/C (16 mV and 33 mV). Moreover, the catalyst has excellent stability in both media, showing almost “zeroloss” during cycling. In a real device, the catalyst produces 15.4% more hydrogen per power consumed, and shows a higher Faradaic efficiency (92.28%) than the benchmark Pt/C (85.97%). Density functional theory calculations suggest that Ru–C bonding is the most plausible active site for the HER.

Suggested Citation

  • Do Hyung Kweon & Mahmut Sait Okyay & Seok-Jin Kim & Jong-Pil Jeon & Hyuk-Jun Noh & Noejung Park & Javeed Mahmood & Jong-Beom Baek, 2020. "Ruthenium anchored on carbon nanotube electrocatalyst for hydrogen production with enhanced Faradaic efficiency," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15069-3
    DOI: 10.1038/s41467-020-15069-3
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    Cited by:

    1. Yinghao Li & Chun-Kuo Peng & Huimin Hu & San-Yuan Chen & Jin-Ho Choi & Yan-Gu Lin & Jong-Min Lee, 2022. "Interstitial boron-triggered electron-deficient Os aerogels for enhanced pH-universal hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Veeramani, Krishnan & Janani, Gnanaprakasam & Kim, Joonyoung & Surendran, Subramani & Lim, Jaehyoung & Jesudass, Sebastian Cyril & Mahadik, Shivraj & lee, Hyunjung & Kim, Tae-Hoon & Kim, Jung Kyu & Si, 2023. "Hydrogen and value-added products yield from hybrid water electrolysis: A critical review on recent developments," Renewable and Sustainable Energy Reviews, Elsevier, vol. 177(C).
    3. Rui Yao & Kaian Sun & Kaiyang Zhang & Yun Wu & Yujie Du & Qiang Zhao & Guang Liu & Chen Chen & Yuhan Sun & Jinping Li, 2024. "Stable hydrogen evolution reaction at high current densities via designing the Ni single atoms and Ru nanoparticles linked by carbon bridges," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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