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Strain-retardant coherent perovskite phase stabilized Ni-rich cathode

Author

Listed:
  • Liguang Wang

    (Zhejiang University
    Argonne National Laboratory
    Institute of Zhejiang University-Quzhou)

  • Tongchao Liu

    (Argonne National Laboratory)

  • Tianpin Wu

    (Zhejiang University
    Argonne National Laboratory)

  • Jun Lu

    (Zhejiang University
    Argonne National Laboratory)

Abstract

The use of state-of-the-art Ni-rich layered oxides (LiNixCoyMn1−x−yO2, x > 0.5) as the cathode material for lithium-ion batteries can push the energy and power density to a higher level than is currently available1,2. However, volume variation associated with anisotropic lattice strain and stress that is being developed during lithium (de)intercalation induces severe structural instability and electrochemical decay of the cathode materials, which is amplified further when the battery is operating at a high voltage (above 4.5 V), which is essential for unlocking its high energy3–6. Even after much effort by the research community, an intrinsic strain-retardant method for directly alleviating the continuous accumulation of lattice strain remains elusive. Here, by introducing a coherent perovskite phase into the layered structure functioning as a ‘rivet’, we significantly mitigate the pernicious structural evolutions by a pinning effect. The lattice strain evolution in every single cycle is markedly reduced by nearly 70% when compared with conventional materials, which significantly enhances morphological integrity leading to a notable improvement in battery cyclability. This strain-retardant approach broadens the perspective for lattice engineering to release the strain raised from lithium (de)intercalation and paves the way for the development of high-energy-density cathodes with long durability.

Suggested Citation

  • Liguang Wang & Tongchao Liu & Tianpin Wu & Jun Lu, 2022. "Strain-retardant coherent perovskite phase stabilized Ni-rich cathode," Nature, Nature, vol. 611(7934), pages 61-67, November.
  • Handle: RePEc:nat:nature:v:611:y:2022:i:7934:d:10.1038_s41586-022-05238-3
    DOI: 10.1038/s41586-022-05238-3
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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. Chuanlai Liu & Franz Roters & Dierk Raabe, 2024. "Role of grain-level chemo-mechanics in composite cathode degradation of solid-state lithium batteries," Nature Communications, Nature, vol. 15(1), pages 1-18, December.
    3. Tonghuan Yang & Kun Zhang & Yuxuan Zuo & Jin Song & Yali Yang & Chuan Gao & Tao Chen & Hangchao Wang & Wukun Xiao & Zewen Jiang & Dingguo Xia, 2024. "Ultrahigh-nickel layered cathode with cycling stability for sustainable lithium-ion batteries," Nature Sustainability, Nature, vol. 7(9), pages 1204-1214, September.

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