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Cation insertion to break the activity/stability relationship for highly active oxygen evolution reaction catalyst

Author

Listed:
  • Chunzhen Yang

    (Collège de France
    Sun Yat-Sen University)

  • Gwenaëlle Rousse

    (Collège de France
    CNRS FR 3459,33 rue Saint Leu
    Sorbonne Université)

  • Katrine Louise Svane

    (Technical University of Denmark)

  • Paul E. Pearce

    (Collège de France
    CNRS FR 3459,33 rue Saint Leu)

  • Artem M. Abakumov

    (Skolkovo Institute of Science and Technology)

  • Michael Deschamps

    (CNRS FR 3459,33 rue Saint Leu
    1D avenue de la recherche scientifique)

  • Giannantonio Cibin

    (Harwell Science and Innovation Campus)

  • Alan V. Chadwick

    (University of Kent
    ALISTORE-European Research Institute)

  • Daniel Alves Dalla Corte

    (Collège de France
    CNRS FR 3459,33 rue Saint Leu
    Sorbonne Université)

  • Heine Anton Hansen

    (Technical University of Denmark)

  • Tejs Vegge

    (Technical University of Denmark)

  • Jean-Marie Tarascon

    (Collège de France
    CNRS FR 3459,33 rue Saint Leu
    Sorbonne Université
    ALISTORE-European Research Institute)

  • Alexis Grimaud

    (Collège de France
    CNRS FR 3459,33 rue Saint Leu)

Abstract

The production of hydrogen at a large scale by the environmentally-friendly electrolysis process is currently hampered by the slow kinetics of the oxygen evolution reaction (OER). We report a solid electrocatalyst α-Li2IrO3 which upon oxidation/delithiation chemically reacts with water to form a hydrated birnessite phase, the OER activity of which is five times greater than its non-reacted counterpart. This reaction enlists a bulk redox process during which hydrated potassium ions from the alkaline electrolyte are inserted into the structure while water is oxidized and oxygen evolved. This singular charge balance process for which the electrocatalyst is solid but the reaction is homogeneous in nature allows stabilizing the surface of the catalyst while ensuring stable OER performances, thus breaking the activity/stability tradeoff normally encountered for OER catalysts.

Suggested Citation

  • Chunzhen Yang & Gwenaëlle Rousse & Katrine Louise Svane & Paul E. Pearce & Artem M. Abakumov & Michael Deschamps & Giannantonio Cibin & Alan V. Chadwick & Daniel Alves Dalla Corte & Heine Anton Hansen, 2020. "Cation insertion to break the activity/stability relationship for highly active oxygen evolution reaction catalyst," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15231-x
    DOI: 10.1038/s41467-020-15231-x
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    Cited by:

    1. Raj Pandya & Florian Dorchies & Davide Romanin & Jean-François Lemineur & Frédéric Kanoufi & Sylvain Gigan & Alex W. Chin & Hilton B. Aguiar & Alexis Grimaud, 2024. "Concurrent oxygen evolution reaction pathways revealed by high-speed compressive Raman imaging," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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