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A Li-rich layered oxide cathode with negligible voltage decay

Author

Listed:
  • Dong Luo

    (City University of Hong Kong)

  • He Zhu

    (City University of Hong Kong)

  • Yi Xia

    (Northwestern University
    Portland State University)

  • Zijia Yin

    (City University of Hong Kong)

  • Yan Qin

    (Argonne National Laboratory)

  • Tianyi Li

    (Argonne National Laboratory)

  • Qinghua Zhang

    (Chinese Academy of Sciences)

  • Lin Gu

    (Tsinghua University)

  • Yong Peng

    (Lanzhou University)

  • Junwei Zhang

    (Lanzhou University)

  • Kamila M. Wiaderek

    (Argonne National Laboratory)

  • Yalan Huang

    (City University of Hong Kong)

  • Tingting Yang

    (City University of Hong Kong)

  • Yu Tang

    (City University of Hong Kong)

  • Si Lan

    (City University of Hong Kong)

  • Yang Ren

    (City University of Hong Kong
    City University of Hong Kong)

  • Wenquan Lu

    (Argonne National Laboratory)

  • Christopher M. Wolverton

    (Northwestern University)

  • Qi Liu

    (City University of Hong Kong
    City University of Hong Kong
    City University of Hong Kong
    City University of Hong Kong)

Abstract

With high capacity at low cost, Li- and Mn-rich (LMR) layered oxides are a promising class of cathodes for next-generation Li-ion batteries. However, substantial voltage decay during cycling, due to the unstable Li2MnO3 honeycomb structure, is still an obstacle to their practical deployment. Here we report a Co-free LMR Li-ion battery cathode with negligible voltage decay. The material has a composite structure consisting of layered LiTMO2 and various stacked Li2MnO3 components, where transition metal (TM) ions that reside in the Li layers of Li2MnO3 form caps to strengthen the stability of the honeycomb structure. This capped-honeycomb structure is persistent after high-voltage cycling and prevents TM migration and oxygen loss as shown by experimental and computational results. This work demonstrates that the long-standing voltage decay problem in LMRs can be effectively mitigated by internally pinning the honeycomb structure, which opens an avenue to developing next-generation high-energy cathode materials.

Suggested Citation

  • Dong Luo & He Zhu & Yi Xia & Zijia Yin & Yan Qin & Tianyi Li & Qinghua Zhang & Lin Gu & Yong Peng & Junwei Zhang & Kamila M. Wiaderek & Yalan Huang & Tingting Yang & Yu Tang & Si Lan & Yang Ren & Wenq, 2023. "A Li-rich layered oxide cathode with negligible voltage decay," Nature Energy, Nature, vol. 8(10), pages 1078-1087, October.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:10:d:10.1038_s41560-023-01289-6
    DOI: 10.1038/s41560-023-01289-6
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    Cited by:

    1. Ho-Young Jang & Donggun Eum & Jiung Cho & Jun Lim & Yeji Lee & Jun-Hyuk Song & Hyeokjun Park & Byunghoon Kim & Do-Hoon Kim & Sung-Pyo Cho & Sugeun Jo & Jae Hoon Heo & Sunyoung Lee & Jongwoo Lim & Kisu, 2024. "Structurally robust lithium-rich layered oxides for high-energy and long-lasting cathodes," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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