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A salt-philic, solvent-phobic interfacial coating design for lithium metal electrodes

Author

Listed:
  • Zhuojun Huang

    (Stanford University
    Stanford University)

  • Jian-Cheng Lai

    (Stanford University)

  • Sheng-Lun Liao

    (Stanford University)

  • Zhiao Yu

    (Stanford University
    Stanford University)

  • Yuelang Chen

    (Stanford University
    Stanford University)

  • Weilai Yu

    (Stanford University)

  • Huaxin Gong

    (Stanford University)

  • Xin Gao

    (Stanford University)

  • Yufei Yang

    (Stanford University)

  • Jian Qin

    (Stanford University)

  • Yi Cui

    (Stanford University
    Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory)

  • Zhenan Bao

    (Stanford University)

Abstract

A key challenge to enable Li metal batteries as next-generation energy storage devices is to stabilize the interface between the Li metal and the electrolyte. A promising strategy is to promote the formation of a salt-derived robust and stable solid electrolyte interphase (SEI). Here we report a salt-philic, solvent-phobic (SP2) polymer coating for Li metal electrode that selectively transports salt over solvent and thus promotes salt-derived SEI formation. Unlike previously reported artificial SEIs, this SP2 coating approach resulted in enhanced cycling performance in several types of solvent, such as ether, carbonate and fluorinated ether. Specifically, the SP2 coating further enhanced the cycle life of a recently reported high-performance fluorinated ether electrolyte to give a ~400 cycle life (50 µm Li, 2.5 mAh cm−2 nickel manganese cobalt oxide and 80% capacity retention). Our coating design concept can be further fine tuned as promising electrolytes become available.

Suggested Citation

  • Zhuojun Huang & Jian-Cheng Lai & Sheng-Lun Liao & Zhiao Yu & Yuelang Chen & Weilai Yu & Huaxin Gong & Xin Gao & Yufei Yang & Jian Qin & Yi Cui & Zhenan Bao, 2023. "A salt-philic, solvent-phobic interfacial coating design for lithium metal electrodes," Nature Energy, Nature, vol. 8(6), pages 577-585, June.
  • Handle: RePEc:nat:natene:v:8:y:2023:i:6:d:10.1038_s41560-023-01252-5
    DOI: 10.1038/s41560-023-01252-5
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    Cited by:

    1. Yanhua Zhang & Rui Qiao & Qiaona Nie & Peiyu Zhao & Yong Li & Yunfei Hong & Shengjie Chen & Chao Li & Baoyu Sun & Hao Fan & Junkai Deng & Jingying Xie & Feng Liu & Jiangxuan Song, 2024. "Synergetic regulation of SEI mechanics and crystallographic orientation for stable lithium metal pouch cells," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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