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Circumventing huge volume strain in alloy anodes of lithium batteries

Author

Listed:
  • Hongyi Li

    (Tohoku University)

  • Takitaro Yamaguchi

    (Sumitomo Chemical Co., Ltd.)

  • Shingo Matsumoto

    (Sumitomo Chemical Co., Ltd.)

  • Hiroaki Hoshikawa

    (Sumitomo Chemical Co., Ltd.)

  • Toshiaki Kumagai

    (Sumitomo Chemical Co., Ltd.)

  • Norihiko L. Okamoto

    (Tohoku University)

  • Tetsu Ichitsubo

    (Tohoku University)

Abstract

Since the launch of lithium-ion batteries, elements (such as silicon, tin, or aluminum) that can be alloyed with lithium have been expected as anode materials, owing to larger capacity. However, their successful application has not been accomplished because of drastic structural degradation caused by cyclic large volume change during battery reactions. To prolong lifetime of alloy anodes, we must circumvent the huge volume strain accompanied by insertion/extraction of lithium. Here we report that by using aluminum-foil anodes, the volume expansion during lithiation can be confined to the normal direction to the foil and, consequently, the electrode cyclability can be markedly enhanced. Such a unidirectional volume-strain circumvention requires an appropriate hardness of the matrix and a certain tolerance to off-stoichiometry of the resulting intermetallic compound, which drive interdiffusion of matrix component and lithium along the normal-plane direction. This metallurgical concept would invoke a paradigm shift to future alloy-anode battery technologies.

Suggested Citation

  • Hongyi Li & Takitaro Yamaguchi & Shingo Matsumoto & Hiroaki Hoshikawa & Toshiaki Kumagai & Norihiko L. Okamoto & Tetsu Ichitsubo, 2020. "Circumventing huge volume strain in alloy anodes of lithium batteries," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15452-0
    DOI: 10.1038/s41467-020-15452-0
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    Cited by:

    1. Takuya Hatakeyama & Norihiko L. Okamoto & Satoshi Otake & Hiroaki Sato & Hongyi Li & Tetsu Ichitsubo, 2022. "Excellently balanced water-intercalation-type heat-storage oxide," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Yuhgene Liu & Congcheng Wang & Sun Geun Yoon & Sang Yun Han & John A. Lewis & Dhruv Prakash & Emily J. Klein & Timothy Chen & Dae Hoon Kang & Diptarka Majumdar & Rajesh Gopalaswamy & Matthew T. McDowe, 2023. "Aluminum foil negative electrodes with multiphase microstructure for all-solid-state Li-ion batteries," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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