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Operando visualisation of battery chemistry in a sodium-ion battery by 23Na magnetic resonance imaging

Author

Listed:
  • Joshua M. Bray

    (University of Birmingham)

  • Claire L. Doswell

    (University of Birmingham)

  • Galina E. Pavlovskaya

    (University of Nottingham
    NIHR Nottingham Biomedical Centre)

  • Lin Chen

    (University of Birmingham)

  • Brij Kishore

    (University of Birmingham)

  • Heather Au

    (Imperial College London)

  • Hande Alptekin

    (Imperial College London)

  • Emma Kendrick

    (University of Birmingham)

  • Maria-Magdalena Titirici

    (Imperial College London)

  • Thomas Meersmann

    (University of Nottingham
    NIHR Nottingham Biomedical Centre)

  • Melanie M. Britton

    (University of Birmingham)

Abstract

Sodium-ion batteries are a promising battery technology for their cost and sustainability. This has led to increasing interest in the development of new sodium-ion batteries and new analytical methods to non-invasively, directly visualise battery chemistry. Here we report operando 1H and 23Na nuclear magnetic resonance spectroscopy and imaging experiments to observe the speciation and distribution of sodium in the electrode and electrolyte during sodiation and desodiation of hard carbon in a sodium metal cell and a sodium-ion full-cell configuration. The evolution of the hard carbon sodiation and subsequent formation and evolution of sodium dendrites, upon over-sodiation of the hard carbon, are observed and mapped by 23Na nuclear magnetic resonance spectroscopy and imaging, and their three-dimensional microstructure visualised by 1H magnetic resonance imaging. We also observe, for the first time, the formation of metallic sodium species on hard carbon upon first charge (formation) in a full-cell configuration.

Suggested Citation

  • Joshua M. Bray & Claire L. Doswell & Galina E. Pavlovskaya & Lin Chen & Brij Kishore & Heather Au & Hande Alptekin & Emma Kendrick & Maria-Magdalena Titirici & Thomas Meersmann & Melanie M. Britton, 2020. "Operando visualisation of battery chemistry in a sodium-ion battery by 23Na magnetic resonance imaging," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15938-x
    DOI: 10.1038/s41467-020-15938-x
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