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High-power Mg batteries enabled by heterogeneous enolization redox chemistry and weakly coordinating electrolytes

Author

Listed:
  • Hui Dong

    (University of Houston
    Texas Center for Superconductivity at the University of Houston (TcSUH))

  • Oscar Tutusaus

    (Toyota Research Institute of North America)

  • Yanliang Liang

    (University of Houston
    Texas Center for Superconductivity at the University of Houston (TcSUH))

  • Ye Zhang

    (University of Houston
    Texas Center for Superconductivity at the University of Houston (TcSUH))

  • Zachary Lebens-Higgins

    (Lawrence Berkeley National Laboratory
    Binghamton University)

  • Wanli Yang

    (Lawrence Berkeley National Laboratory)

  • Rana Mohtadi

    (Toyota Research Institute of North America)

  • Yan Yao

    (University of Houston
    Texas Center for Superconductivity at the University of Houston (TcSUH))

Abstract

Magnesium batteries have long been pursued as potentially low-cost, high-energy and safe alternatives to Li-ion batteries. However, Mg2+ interacts strongly with electrolyte solutions and cathode materials, leading to sluggish ion dissociation and diffusion, and consequently low power output. Here we report a heterogeneous enolization chemistry involving carbonyl reduction (C=O↔C–O−), which bypasses the dissociation and diffusion difficulties, enabling fast and reversible redox processes. This kinetically favoured cathode is coupled with a tailored, weakly coordinating boron cluster-based electrolyte that allows for dendrite-free Mg plating/stripping at a current density of 20 mA cm−2. The combination affords a Mg battery that delivers a specific power of up to 30.4 kW kg−1, nearly two orders of magnitude higher than that of state-of-the-art Mg batteries. The cathode and electrolyte chemistries elucidated here propel the development of magnesium batteries and would accelerate the adoption of this low-cost and safe battery technology.

Suggested Citation

  • Hui Dong & Oscar Tutusaus & Yanliang Liang & Ye Zhang & Zachary Lebens-Higgins & Wanli Yang & Rana Mohtadi & Yan Yao, 2020. "High-power Mg batteries enabled by heterogeneous enolization redox chemistry and weakly coordinating electrolytes," Nature Energy, Nature, vol. 5(12), pages 1043-1050, December.
    • Handle: RePEc:nat:natene:v:5:y:2020:i:12:d:10.1038_s41560-020-00734-0
    DOI: 10.1038/s41560-020-00734-0
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    Cited by:

    1. Songshan Bi & Shuai Wang & Fang Yue & Zhiwei Tie & Zhiqiang Niu, 2021. "A rechargeable aqueous manganese-ion battery based on intercalation chemistry," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    2. Ana Sanz Matias & Fabrice Roncoroni & Siddharth Sundararaman & David Prendergast, 2024. "Ca-dimers, solvent layering, and dominant electrochemically active species in Ca(BH4)2 in THF," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    3. Zishuai Zhang & Yilong Zhu & Miao Yu & Yan Jiao & Yan Huang, 2022. "Development of long lifespan high-energy aqueous organic||iodine rechargeable batteries," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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