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Exceptionally active iridium evolved from a pseudo-cubic perovskite for oxygen evolution in acid

Author

Listed:
  • Yubo Chen

    (Nanyang Technological University
    The Cambridge Centre for Advanced Research and Education in Singapore
    Nanyang Technological University)

  • Haiyan Li

    (Nanyang Technological University
    Nanyang Technological University)

  • Jingxian Wang

    (Nanyang Technological University)

  • Yonghua Du

    (A*STAR)

  • Shibo Xi

    (A*STAR)

  • Yuanmiao Sun

    (Nanyang Technological University)

  • Matthew Sherburne

    (University of California at Berkeley
    Berkeley Educational Alliance for Research in Singapore Ltd.)

  • Joel W. Ager

    (University of California at Berkeley
    Berkeley Educational Alliance for Research in Singapore Ltd.)

  • Adrian C. Fisher

    (The Cambridge Centre for Advanced Research and Education in Singapore
    University of Cambridge)

  • Zhichuan J. Xu

    (Nanyang Technological University
    The Cambridge Centre for Advanced Research and Education in Singapore
    Nanyang Technological University
    Energy Research Institute @ Nanyang Technological University)

Abstract

Exploring robust catalysts for water oxidation in acidic electrolyte is challenging due to the limited material choice. Iridium (Ir) is the only active element with a high resistance to the acid corrosion during water electrolysis. However, Ir is rare, and its large-scale application could only be possible if the intrinsic activity of Ir could be greatly enhanced. Here, a pseudo-cubic SrCo0.9Ir0.1O3-δ perovskite, containing corner-shared IrO6 octahedrons, is designed. The Ir in the SrCo0.9Ir0.1O3-δ catalyst shows an extremely high intrinsic activity as reflected from its high turnover frequency, which is more than two orders of magnitude higher than that of IrO2. During the electrochemical cycling, a surface reconstruction, with Sr and Co leaching, over SrCo0.9Ir0.1O3-δ occurs. Such reconstructed surface region, likely contains a high amount of structural domains with corner-shared and under-coordinated IrOx octahedrons, is responsible for the observed high activity.

Suggested Citation

  • Yubo Chen & Haiyan Li & Jingxian Wang & Yonghua Du & Shibo Xi & Yuanmiao Sun & Matthew Sherburne & Joel W. Ager & Adrian C. Fisher & Zhichuan J. Xu, 2019. "Exceptionally active iridium evolved from a pseudo-cubic perovskite for oxygen evolution in acid," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08532-3
    DOI: 10.1038/s41467-019-08532-3
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    Cited by:

    1. Gang Zhou & Peifang Wang & Bin Hu & Xinyue Shen & Chongchong Liu & Weixiang Tao & Peilin Huang & Lizhe Liu, 2022. "Spin-related symmetry breaking induced by half-disordered hybridization in BixEr2-xRu2O7 pyrochlores for acidic oxygen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Hui Su & Chenyu Yang & Meihuan Liu & Xu Zhang & Wanlin Zhou & Yuhao Zhang & Kun Zheng & Shixun Lian & Qinghua Liu, 2024. "Tensile straining of iridium sites in manganese oxides for proton-exchange membrane water electrolysers," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    3. María Retuerto & Laura Pascual & Jorge Torrero & Mohamed Abdel Salam & Álvaro Tolosana-Moranchel & Diego Gianolio & Pilar Ferrer & Paula Kayser & Vincent Wilke & Svenja Stiber & Verónica Celorrio & Mo, 2022. "Highly active and stable OER electrocatalysts derived from Sr2MIrO6 for proton exchange membrane water electrolyzers," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    4. Shiyi Chen & Shishi Zhang & Lei Guo & Lun Pan & Chengxiang Shi & Xiangwen Zhang & Zhen-Feng Huang & Guidong Yang & Ji-Jun Zou, 2023. "Reconstructed Ir‒O‒Mo species with strong Brønsted acidity for acidic water oxidation," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    5. Yubo Chen & Joon Kyo Seo & Yuanmiao Sun & Thomas A. Wynn & Marco Olguin & Minghao Zhang & Jingxian Wang & Shibo Xi & Yonghua Du & Kaidi Yuan & Wei Chen & Adrian C. Fisher & Maoyu Wang & Zhenxing Feng , 2022. "Enhanced oxygen evolution over dual corner-shared cobalt tetrahedra," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    6. Dmitry Galyamin & Jorge Torrero & Isabel Rodríguez & Manuel J. Kolb & Pilar Ferrer & Laura Pascual & Mohamed Abdel Salam & Diego Gianolio & Verónica Celorrio & Mohamed Mokhtar & Daniel Garcia Sanchez , 2023. "Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    7. Jia-Wei Zhao & Kaihang Yue & Hong Zhang & Shu-Yin Wei & Jiawei Zhu & Dongdong Wang & Junze Chen & Vyacheslav Yu. Fominski & Gao-Ren Li, 2024. "The formation of unsaturated IrOx in SrIrO3 by cobalt-doping for acidic oxygen evolution reaction," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    8. Xinyu Ping & Yongduo Liu & Lixia Zheng & Yang Song & Lin Guo & Siguo Chen & Zidong Wei, 2024. "Locking the lattice oxygen in RuO2 to stabilize highly active Ru sites in acidic water oxidation," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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