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In-situ visualization of the space-charge-layer effect on interfacial lithium-ion transport in all-solid-state batteries

Author

Listed:
  • Longlong Wang

    (Chinese Academy of Sciences)

  • Ruicong Xie

    (Tianjin University of Technology)

  • Bingbing Chen

    (Nanjing Tech University)

  • Xinrun Yu

    (Chinese Academy of Sciences)

  • Jun Ma

    (Chinese Academy of Sciences)

  • Chao Li

    (Tianjin University of Technology)

  • Zhiwei Hu

    (Max Plank Institute for Chemical Physics of Solids)

  • Xingwei Sun

    (Chinese Academy of Sciences)

  • Chengjun Xu

    (Nanjing Tech University)

  • Shanmu Dong

    (Chinese Academy of Sciences)

  • Ting-Shan Chan

    (National Synchrotron Radiation Research Center)

  • Jun Luo

    (Tianjin University of Technology)

  • Guanglei Cui

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Liquan Chen

    (Chinese Academy of Sciences)

Abstract

The space charge layer (SCL) is generally considered one of the origins of the sluggish interfacial lithium-ion transport in all-solid-state lithium-ion batteries (ASSLIBs). However, in-situ visualization of the SCL effect on the interfacial lithium-ion transport in sulfide-based ASSLIBs is still a great challenge. Here, we directly observe the electrode/electrolyte interface lithium-ion accumulation resulting from the SCL by investigating the net-charge-density distribution across the high-voltage LiCoO2/argyrodite Li6PS5Cl interface using the in-situ differential phase contrast scanning transmission electron microscopy (DPC-STEM) technique. Moreover, we further demonstrate a built-in electric field and chemical potential coupling strategy to reduce the SCL formation and boost lithium-ion transport across the electrode/electrolyte interface by the in-situ DPC-STEM technique and finite element method simulations. Our findings will strikingly advance the fundamental scientific understanding of the SCL mechanism in ASSLIBs and shed light on rational electrode/electrolyte interface design for high-rate performance ASSLIBs.

Suggested Citation

  • Longlong Wang & Ruicong Xie & Bingbing Chen & Xinrun Yu & Jun Ma & Chao Li & Zhiwei Hu & Xingwei Sun & Chengjun Xu & Shanmu Dong & Ting-Shan Chan & Jun Luo & Guanglei Cui & Liquan Chen, 2020. "In-situ visualization of the space-charge-layer effect on interfacial lithium-ion transport in all-solid-state batteries," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19726-5
    DOI: 10.1038/s41467-020-19726-5
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    Cited by:

    1. Zhenqi Gu & Jiale Ma & Feng Zhu & Ting Liu & Kai Wang & Ce-Wen Nan & Zhenyu Li & Cheng Ma, 2023. "Atomic-scale study clarifying the role of space-charge layers in a Li-ion-conducting solid electrolyte," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Lv Hu & Jinzhu Wang & Kai Wang & Zhenqi Gu & Zhiwei Xi & Hui Li & Fang Chen & Youxi Wang & Zhenyu Li & Cheng Ma, 2023. "A cost-effective, ionically conductive and compressible oxychloride solid-state electrolyte for stable all-solid-state lithium-based batteries," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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