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Stabilizing lithium metal anode by octaphenyl polyoxyethylene-lithium complexation

Author

Listed:
  • Hongliu Dai

    (Jiangsu Normal University
    Materials and Telecommunications)

  • Xingxing Gu

    (Chongqing Technology and Business University)

  • Jing Dong

    (Jiangsu Normal University)

  • Chao Wang

    (Jiangsu Normal University)

  • Chao Lai

    (Jiangsu Normal University)

  • Shuhui Sun

    (Materials and Telecommunications)

Abstract

Lithium metal is an ideal anode for lithium batteries due to its low electrochemical potential and high theoretical capacity. However, safety issues arising from lithium dendrite growth have significantly reduced the practical applicability of lithium metal batteries. Here, we report the addition of octaphenyl polyoxyethylene as an electrolyte additive to enable a stable complex layer on the surface of the lithium anode. This surface layer not only promotes uniform lithium deposition, but also facilitates the formation of a robust solid-electrolyte interface film comprising cross-linked polymer. As a result, lithium|lithium symmetric cells constructed using the octaphenyl polyoxyethylene additive exhibit excellent cycling stability over 400 cycles at 1 mA cm−2, and outstanding rate performance up to 4 mA cm−2. Full cells assembled with a LiFePO4 cathode exhibit high rate capability and impressive cyclability, with capacity decay of only 0.023% per cycle.

Suggested Citation

  • Hongliu Dai & Xingxing Gu & Jing Dong & Chao Wang & Chao Lai & Shuhui Sun, 2020. "Stabilizing lithium metal anode by octaphenyl polyoxyethylene-lithium complexation," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-14505-8
    DOI: 10.1038/s41467-020-14505-8
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    Cited by:

    1. Zhuo Li & Rui Yu & Suting Weng & Qinghua Zhang & Xuefeng Wang & Xin Guo, 2023. "Tailoring polymer electrolyte ionic conductivity for production of low- temperature operating quasi-all-solid-state lithium metal batteries," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Hangchao Wang & Yali Yang & Chuan Gao & Tao Chen & Jin Song & Yuxuan Zuo & Qiu Fang & Tonghuan Yang & Wukun Xiao & Kun Zhang & Xuefeng Wang & Dingguo Xia, 2024. "An entanglement association polymer electrolyte for Li-metal batteries," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    3. Kwiyong Kim & Darien Raymond & Riccardo Candeago & Xiao Su, 2021. "Selective cobalt and nickel electrodeposition for lithium-ion battery recycling through integrated electrolyte and interface control," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    4. Guangli Zheng & Tong Yan & Yifeng Hong & Xiaona Zhang & Jianying Wu & Zhenxing Liang & Zhiming Cui & Li Du & Huiyu Song, 2023. "A non-Newtonian fluid quasi-solid electrolyte designed for long life and high safety Li-O2 batteries," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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