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Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage

Author

Listed:
  • Qianqian Li

    (Wuhan University of Technology
    Shanghai University
    Northwestern University)

  • Zhenpeng Yao

    (Northwestern University
    Harvard University)

  • Eungje Lee

    (Argonne National Laboratory)

  • Yaobin Xu

    (Northwestern University)

  • Michael M. Thackeray

    (Argonne National Laboratory)

  • Chris Wolverton

    (Northwestern University)

  • Vinayak P. Dravid

    (Northwestern University)

  • Jinsong Wu

    (Wuhan University of Technology
    Northwestern University)

Abstract

Crystalline defects are commonly generated in lithium-metal-oxide electrodes during cycling of lithium-ion batteries. Their role in electrochemical reactions is not yet fully understood because, until recently, there has not been an effective operando technique to image dynamic processes at the atomic level. In this study, two types of defects were monitored dynamically during delithiation and concomitant oxidation of oxygen ions by using in situ high-resolution transmission electron microscopy supported by density functional theory calculations. One stacking fault with a fault vector b/6[110] and low mobility contributes minimally to oxygen release from the structure. In contrast, dissociated dislocations with Burgers vector of c/2[001] have high gliding and transverse mobility; they lead to the formation, transport and release subsequently of oxygen related species at the surface of the electrode particles. This work advances the scientific understanding of how oxygen participates and the structural response during the activation process at high potentials.

Suggested Citation

  • Qianqian Li & Zhenpeng Yao & Eungje Lee & Yaobin Xu & Michael M. Thackeray & Chris Wolverton & Vinayak P. Dravid & Jinsong Wu, 2019. "Dynamic imaging of crystalline defects in lithium-manganese oxide electrodes during electrochemical activation to high voltage," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09408-2
    DOI: 10.1038/s41467-019-09408-2
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    Cited by:

    1. 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.
    2. Jun-Hyuk Song & Seungju Yu & Byunghoon Kim & Donggun Eum & Jiung Cho & Ho-Young Jang & Sung-O Park & Jaekyun Yoo & Youngmin Ko & Kyeongsu Lee & Myeong Hwan Lee & Byungwook Kang & Kisuk Kang, 2023. "Slab gliding, a hidden factor that induces irreversibility and redox asymmetry of lithium-rich layered oxide cathodes," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Chen Cheng & Manling Ding & Tianran Yan & Kehua Dai & Jing Mao & Nian Zhang & Liang Zhang & Jinghua Guo, 2020. "Exploring the Charge Compensation Mechanism of P2-Type Na 0.6 Mg 0.3 Mn 0.7 O 2 Cathode Materials for Advanced Sodium-Ion Batteries," Energies, MDPI, vol. 13(21), pages 1-12, November.

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