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Electronic structure formed by Y2O3-doping in lithium position assists improvement of charging-voltage for high-nickel cathodes

Author

Listed:
  • Shijie Wang

    (Changzhou University)

  • Kang Liang

    (Changzhou University)

  • Hongshun Zhao

    (Changzhou University)

  • Min Wu

    (Changzhou University)

  • Junfeng He

    (Changzhou University)

  • Peng Wei

    (Changzhou University)

  • Zhengping Ding

    (Changzhou University)

  • Jianbin Li

    (Changzhou University)

  • Xiaobing Huang

    (Hunan University of Arts and Science)

  • Yurong Ren

    (Changzhou University)

Abstract

High-capacity power battery can be attained through the elevation of the cut-off voltage for LiNi0.83Co0.12Mn0.05O2 high-nickel material. Nevertheless, unstable lattice oxygen would be released during the lithium deep extraction. To solve the above issues, the electronic structure is reconstructed by substituting Li+ ions with Y3+ ions. The dopant within the Li layer could transfer electrons to the adjacent lattice oxygen. Subsequently, the accumulated electrons in the oxygen site are transferred to nickel of highly valence state under the action of the reduction coupling mechanism. The modified strategy suppresses the generation of oxygen defects by regulating the local electronic structure, but more importantly, it reduces the concentration of highly reactive Ni4+ species during the charging state, thus avoiding the evolution of an unexpected phase transition. Strengthening the coupling strength between the lithium layers and transition metal layers finally realizes the fast-charging performance improvement and the cycling stability enhancement under high voltage.

Suggested Citation

  • Shijie Wang & Kang Liang & Hongshun Zhao & Min Wu & Junfeng He & Peng Wei & Zhengping Ding & Jianbin Li & Xiaobing Huang & Yurong Ren, 2025. "Electronic structure formed by Y2O3-doping in lithium position assists improvement of charging-voltage for high-nickel cathodes," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-52768-7
    DOI: 10.1038/s41467-024-52768-7
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    References listed on IDEAS

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    1. Chen Zhao & Chuanwei Wang & Xiang Liu & Inhui Hwang & Tianyi Li & Xinwei Zhou & Jiecheng Diao & Junjing Deng & Yan Qin & Zhenzhen Yang & Guanyi Wang & Wenqian Xu & Chengjun Sun & Longlong Wu & Wonsuk , 2024. "Publisher Correction: Suppressing strain propagation in ultrahigh-Ni cathodes during fast charging via epitaxial entropy-assisted coating," Nature Energy, Nature, vol. 9(5), pages 622-622, May.
    2. Shuaifeng Lou & Qianwen Liu & Fang Zhang & Qingsong Liu & Zhenjiang Yu & Tiansheng Mu & Yang Zhao & James Borovilas & Yijun Chen & Mingyuan Ge & Xianghui Xiao & Wah-Keat Lee & Geping Yin & Yuan Yang &, 2020. "Insights into interfacial effect and local lithium-ion transport in polycrystalline cathodes of solid-state batteries," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    3. Chen Zhao & Chuanwei Wang & Xiang Liu & Inhui Hwang & Tianyi Li & Xinwei Zhou & Jiecheng Diao & Junjing Deng & Yan Qin & Zhenzhen Yang & Guanyi Wang & Wenqian Xu & Chengjun Sun & Longlong Wu & Wonsuk , 2024. "Suppressing strain propagation in ultrahigh-Ni cathodes during fast charging via epitaxial entropy-assisted coating," Nature Energy, Nature, vol. 9(3), pages 345-356, March.
    4. Geon-Tae Park & Been Namkoong & Su-Bin Kim & Jun Liu & Chong S. Yoon & Yang-Kook Sun, 2022. "Introducing high-valence elements into cobalt-free layered cathodes for practical lithium-ion batteries," Nature Energy, Nature, vol. 7(10), pages 946-954, October.
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