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Stalling oxygen evolution in high-voltage cathodes by lanthurization

Author

Listed:
  • Mingzhi Cai

    (Peking University)

  • Yanhao Dong

    (Massachusetts Institute of Technology
    Tsinghua University)

  • Miao Xie

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences)

  • Wujie Dong

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences)

  • Chenlong Dong

    (Tianjin University of Technology)

  • Peng Dai

    (Xiamen University)

  • Hui Zhang

    (Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences)

  • Xin Wang

    (Zhengzhou University)

  • Xuzhou Sun

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences)

  • Shaoning Zhang

    (Shanghai Institute of Ceramics, Chinese Academy of Sciences)

  • Moonsu Yoon

    (Massachusetts Institute of Technology)

  • Haowei Xu

    (Massachusetts Institute of Technology)

  • Yunsong Ge

    (Peking University)

  • Ju Li

    (Massachusetts Institute of Technology
    Massachusetts Institute of Technology)

  • Fuqiang Huang

    (Peking University
    Shanghai Institute of Ceramics, Chinese Academy of Sciences)

Abstract

Coatings and surface passivation are sought to protect high-energy-density cathodes in lithium-ion batteries, which suffer from labile oxygen loss and fast degradations. Here we develop the theory underlying the high-voltage-induced oxygen evolution crisis and report a lanthurizing process to regulate the near-surface structure of energy materials beyond conventional surface doping. Using LiCoO2 as an example and generalizing to Co-lean/free high-energy-density layered cathodes, we demonstrate effective surface passivation, suppressed surface degradation and improved electrochemical performance. High-voltage cycling stability has been greatly enhanced, up to 4.8 V versus Li+/Li, including in practical pouch-type full cells. The superior performance is rooted in the engineered surface architecture and the reliability of the synthesis method. The designed surface phase stalls oxygen evolution reaction at high voltages. It illustrates processing opportunities for surface engineering and coating by high-oxygen-activity passivation, selective chemical alloying and strain engineering using wet chemistry.

Suggested Citation

  • Mingzhi Cai & Yanhao Dong & Miao Xie & Wujie Dong & Chenlong Dong & Peng Dai & Hui Zhang & Xin Wang & Xuzhou Sun & Shaoning Zhang & Moonsu Yoon & Haowei Xu & Yunsong Ge & Ju Li & Fuqiang Huang, 2023. "Stalling oxygen evolution in high-voltage cathodes by lanthurization," Nature Energy, Nature, vol. 8(2), pages 159-168, February.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:2:d:10.1038_s41560-022-01179-3
    DOI: 10.1038/s41560-022-01179-3
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    Cited by:

    1. Zhongsheng Dai & Zhujie Li & Renjie Chen & Feng Wu & Li Li, 2023. "Defective oxygen inert phase stabilized high-voltage nickel-rich cathode for high-energy lithium-ion batteries," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Manoj K. Jangid & Tae H. Cho & Tao Ma & Daniel W. Liao & Hwangsun Kim & Younggyu Kim & Miaofang Chi & Neil P. Dasgupta, 2024. "Eliminating chemo-mechanical degradation of lithium solid-state battery cathodes during >4.5 V cycling using amorphous Nb2O5 coatings," Nature Communications, Nature, vol. 15(1), pages 1-14, December.

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