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Mn(II) deposition on anodes and its effects on capacity fade in spinel lithium manganate–carbon systems

Author

Listed:
  • Chun Zhan

    (Key Laboratory of Organic Optoelectronics and Molecular Engineering, Tsinghua University
    Argonne National Laboratory)

  • Jun Lu

    (Argonne National Laboratory)

  • A. Jeremy Kropf

    (Argonne National Laboratory)

  • Tianpin Wu

    (Argonne National Laboratory)

  • Andrew N. Jansen

    (Argonne National Laboratory)

  • Yang-Kook Sun

    (Hanyang University)

  • Xinping Qiu

    (Key Laboratory of Organic Optoelectronics and Molecular Engineering, Tsinghua University)

  • Khalil Amine

    (Argonne National Laboratory)

Abstract

Dissolution and migration of manganese from cathode lead to severe capacity fading of lithium manganate–carbon cells. Overcoming this major problem requires a better understanding of the mechanisms of manganese dissolution, migration and deposition. Here we apply a variety of advanced analytical methods to study lithium manganate cathodes that are cycled with different anodes. We show that the oxidation state of manganese deposited on the anodes is +2, which differs from the results reported earlier. Our results also indicate that a metathesis reaction between Mn(II) and some species on the solid–electrolyte interphase takes place during the deposition of Mn(II) on the anodes, rather than a reduction reaction that leads to the formation of metallic Mn, as speculated in earlier studies. The concentration of Mn deposited on the anode gradually increases with cycles; this trend is well correlated with the anodes rising impedance and capacity fading of the cell.

Suggested Citation

  • Chun Zhan & Jun Lu & A. Jeremy Kropf & Tianpin Wu & Andrew N. Jansen & Yang-Kook Sun & Xinping Qiu & Khalil Amine, 2013. "Mn(II) deposition on anodes and its effects on capacity fade in spinel lithium manganate–carbon systems," Nature Communications, Nature, vol. 4(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3437
    DOI: 10.1038/ncomms3437
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    Cited by:

    1. Yi Pei & Qing Chen & Meiyu Wang & Pengjun Zhang & Qingyong Ren & Jingkai Qin & Penghao Xiao & Li Song & Yu Chen & Wen Yin & Xin Tong & Liang Zhen & Peng Wang & Cheng-Yan Xu, 2022. "A medium-entropy transition metal oxide cathode for high-capacity lithium metal batteries," Nature Communications, Nature, vol. 13(1), pages 1-13, December.

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