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Rational design of efficient electrode–electrolyte interfaces for solid-state energy storage using ion soft landing

Author

Listed:
  • Venkateshkumar Prabhakaran

    (Pacific Northwest National Laboratory)

  • B. Layla Mehdi

    (Pacific Northwest National Laboratory)

  • Jeffrey J. Ditto

    (University of Oregon)

  • Mark H. Engelhard

    (Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory)

  • Bingbing Wang

    (Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory
    Present address: State Key Laboratory of Marine and Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China)

  • K. Don D. Gunaratne

    (Pacific Northwest National Laboratory)

  • David C. Johnson

    (University of Oregon)

  • Nigel D. Browning

    (Pacific Northwest National Laboratory)

  • Grant E. Johnson

    (Pacific Northwest National Laboratory)

  • Julia Laskin

    (Pacific Northwest National Laboratory)

Abstract

The rational design of improved electrode–electrolyte interfaces (EEI) for energy storage is critically dependent on a molecular-level understanding of ionic interactions and nanoscale phenomena. The presence of non-redox active species at EEI has been shown to strongly influence Faradaic efficiency and long-term operational stability during energy storage processes. Herein, we achieve substantially higher performance and long-term stability of EEI prepared with highly dispersed discrete redox-active cluster anions (50 ng of pure ∼0.75 nm size molybdenum polyoxometalate (POM) anions on 25 μg (∼0.2 wt%) carbon nanotube (CNT) electrodes) by complete elimination of strongly coordinating non-redox species through ion soft landing (SL). Electron microscopy provides atomically resolved images of a uniform distribution of individual POM species soft landed directly on complex technologically relevant CNT electrodes. In this context, SL is established as a versatile approach for the controlled design of novel surfaces for both fundamental and applied research in energy storage.

Suggested Citation

  • Venkateshkumar Prabhakaran & B. Layla Mehdi & Jeffrey J. Ditto & Mark H. Engelhard & Bingbing Wang & K. Don D. Gunaratne & David C. Johnson & Nigel D. Browning & Grant E. Johnson & Julia Laskin, 2016. "Rational design of efficient electrode–electrolyte interfaces for solid-state energy storage using ion soft landing," Nature Communications, Nature, vol. 7(1), pages 1-10, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11399
    DOI: 10.1038/ncomms11399
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