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Hierarchically structured lithium titanate for ultrafast charging in long-life high capacity batteries

Author

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  • Mateusz Odziomek

    (Université de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie
    Faculty of Materials Science and Ceramics, AGH University of Science and Technology)

  • Frédéric Chaput

    (Université de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie)

  • Anna Rutkowska

    (Faculty of Energy and Fuels, AGH University of Science and Technology)

  • Konrad Świerczek

    (Faculty of Energy and Fuels, AGH University of Science and Technology)

  • Danuta Olszewska

    (Faculty of Energy and Fuels, AGH University of Science and Technology)

  • Maciej Sitarz

    (Faculty of Materials Science and Ceramics, AGH University of Science and Technology)

  • Frédéric Lerouge

    (Université de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie)

  • Stephane Parola

    (Université de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR 5182, Université Lyon 1, Laboratoire de Chimie)

Abstract

High-performance Li-ion batteries require materials with well-designed and controlled structures on nanometre and micrometre scales. Electrochemical properties can be enhanced by reducing crystallite size and by manipulating structure and morphology. Here we show a method for preparing hierarchically structured Li4Ti5O12 yielding nano- and microstructure well-suited for use in lithium-ion batteries. Scalable glycothermal synthesis yields well-crystallized primary 4–8 nm nanoparticles, assembled into porous secondary particles. X-ray photoelectron spectroscopy reveals presence of Ti+4 only; combined with chemical analysis showing lithium deficiency, this suggests oxygen non-stoichiometry. Electron microscopy confirms hierarchical morphology of the obtained material. Extended cycling tests in half cells demonstrates capacity of 170 mAh g−1 and no sign of capacity fading after 1,000 cycles at 50C rate (charging completed in 72 s). The particular combination of nanostructure, microstructure and non-stoichiometry for the prepared lithium titanate is believed to underlie the observed electrochemical performance of material.

Suggested Citation

  • Mateusz Odziomek & Frédéric Chaput & Anna Rutkowska & Konrad Świerczek & Danuta Olszewska & Maciej Sitarz & Frédéric Lerouge & Stephane Parola, 2017. "Hierarchically structured lithium titanate for ultrafast charging in long-life high capacity batteries," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15636
    DOI: 10.1038/ncomms15636
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    Cited by:

    1. James T. Frith & Matthew J. Lacey & Ulderico Ulissi, 2023. "A non-academic perspective on the future of lithium-based batteries," Nature Communications, Nature, vol. 14(1), pages 1-17, December.

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