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Fast-charging high-energy lithium-ion batteries via implantation of amorphous silicon nanolayer in edge-plane activated graphite anodes

Author

Listed:
  • Namhyung Kim

    (Ulsan National Institute of Science and Technology (UNIST))

  • Sujong Chae

    (Ulsan National Institute of Science and Technology (UNIST))

  • Jiyoung Ma

    (Ulsan National Institute of Science and Technology (UNIST))

  • Minseong Ko

    (Ulsan National Institute of Science and Technology (UNIST)
    Pukyong National University)

  • Jaephil Cho

    (Ulsan National Institute of Science and Technology (UNIST))

Abstract

As fast-charging lithium-ion batteries turn into increasingly important components in forthcoming applications, various strategies have been devoted to the development of high-rate anodes. However, despite vigorous efforts, the low initial Coulombic efficiency and poor volumetric energy density with insufficient electrode conditions remain critical challenges that have to be addressed. Herein, we demonstrate a hybrid anode via incorporation of a uniformly implanted amorphous silicon nanolayer and edge-site-activated graphite. This architecture succeeds in improving lithium ion transport and minimizing initial capacity losses even with increase in energy density. As a result, the hybrid anode exhibits an exceptional initial Coulombic efficiency (93.8%) and predominant fast-charging behavior with industrial electrode conditions. As a result, a full-cell demonstrates a higher energy density (≥1060 Wh l−1) without any trace of lithium plating at a harsh charging current density (10.2 mA cm−2) and 1.5 times faster charging than that of conventional graphite.

Suggested Citation

  • Namhyung Kim & Sujong Chae & Jiyoung Ma & Minseong Ko & Jaephil Cho, 2017. "Fast-charging high-energy lithium-ion batteries via implantation of amorphous silicon nanolayer in edge-plane activated graphite anodes," Nature Communications, Nature, vol. 8(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00973-y
    DOI: 10.1038/s41467-017-00973-y
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    Cited by:

    1. Linyi Zhao & Tiansheng Wang & Fengkai Zuo & Zhengyu Ju & Yuhao Li & Qiang Li & Yue Zhu & Hongsen Li & Guihua Yu, 2024. "A fast-charging/discharging and long-term stable artificial electrode enabled by space charge storage mechanism," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    2. Bandara, T.G. Thusitha Asela & Viera, J.C. & González, M., 2022. "The next generation of fast charging methods for Lithium-ion batteries: The natural current-absorption methods," Renewable and Sustainable Energy Reviews, Elsevier, vol. 162(C).

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