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Surface-Treated Composite Polymer as a Stable Artificial Solid Electrolyte Interphase Layer for Lithium Metal Anodes

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Download Hi-Res ImageDownload to MS-PowerPointCite This:ACS Appl. Energy Mater. 2024, 7, 24, 12084-12091
    Article

    Surface-Treated Composite Polymer as a Stable Artificial Solid Electrolyte Interphase Layer for Lithium Metal Anodes
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    • Ridwan A. Ahmed
      Ridwan A. Ahmed
      Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Ridwan A. Ahmed
    • Krishna Prasad Koirala
      Krishna Prasad Koirala
      Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Krishna Prasad Koirala
    • Qian Zhao
      Qian Zhao
      Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Qian Zhao
      Orcidhttps://orcid.org/0000-0003-4489-3691
    • Ju-Myung Kim
      Ju-Myung Kim
      Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Ju-Myung Kim
      Orcidhttps://orcid.org/0000-0003-0851-1959
    • Cassidy Anderson
      Cassidy Anderson
      Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Cassidy Anderson
    • Chongmin Wang
      Chongmin Wang
      Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Chongmin Wang
      Orcidhttps://orcid.org/0000-0003-3327-0958
    • Ji-Guang Zhang
      Ji-Guang Zhang
      Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      More by Ji-Guang Zhang
      Orcidhttps://orcid.org/0000-0001-7343-4609
    • Wu Xu*
      Wu Xu
      Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
      *Email: [email protected]
      More by Wu Xu
      Orcidhttps://orcid.org/0000-0002-2685-8684
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    ACS Applied Energy Materials

    Cite this: ACS Appl. Energy Mater. 2024, 7, 24, 12084–12091
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    https://doi.org/10.1021/acsaem.4c02591
    Published December 12, 2024
    Copyright © 2024 American Chemical Society
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    Abstract

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    Lithium (Li) metal batteries (LMBs) are some of the most promising high energy density batteries to meet the demands of electric transportation. However, the practical applications of LMBs are hindered by short cycle life and safety concerns, mainly associated with the side reactions between Li metal anode and liquid electrolyte and the growth of Li dendrites during cycling. In this study, we develop a stable artificial solid electrolyte interphase (aSEI) layer, which consists of a surface-treated (ST) PEO–Li6.4Ga0.2La3Zr2O12 composite polymer coating layer (CPL) on a Li metal anode. The developed aSEI is stable against a selected electrolyte and enables a uniform electrodeposition of Li. Therefore, STCPL@Li||LiNi0.8Mn0.1Co0.1O2 (NMC811) cells exhibit improved cycling stability compared with bare Li||NMC811 cells at moderate to high current densities. Notably, using a 50 μm-thick Li and a practical NMC811 cathode (∼4.8 mAh cm–2), a capacity retention of 85% is obtained for STCPL@Li||NMC811 cells at a current density of 2.4 mA cm–2 after 300 cycles compared with 24% for bare Li||NMC811 cells. Furthermore, STCPL@Li||NMC811 cells demonstrate higher capacities at charge current densities of 2.4, 4.8, and 7.2 mA cm–2 compared with bare Li||NMC811 cells. These findings suggest that STCPL is promising for high current density practical LMBs.

    Copyright © 2024 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsaem.4c02591.

    • Measurement of ionic conductivity and Li+ transference number of composite polymer layers, SEM and EDS images of different Li anodes, XPS of bare Li and cycled Li anodes, charge–discharge voltage profiles, cycling performance, impedance evolution of Li||NMC cells with different Li anodes, and table comparing the results in the present work with prior works (PDF)

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    ACS Applied Energy Materials

    Cite this: ACS Appl. Energy Mater. 2024, 7, 24, 12084–12091
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsaem.4c02591
    Published December 12, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

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