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@ARTICLE{Mohrhardt:1025194,
      author       = {Mohrhardt, Marvin and Brunklaus, Gunther and Brake, Tobias
                      and Ulrich, Julian},
      title        = {{M}onitoring {L}ithium {M}etal {P}lating in {B}attery
                      {M}odules: {I}nsights from {NMR} and {E}lectrochemical
                      {A}nalysis},
      journal      = {Meeting abstracts},
      volume       = {MA2023-02},
      number       = {3},
      issn         = {1091-8213},
      address      = {Pennington, NJ},
      publisher    = {Soc.},
      reportid     = {FZJ-2024-02762},
      pages        = {499 - 499},
      year         = {2023},
      note         = {Hierbei handelt es sich lediglich um einen Abstract.},
      abstract     = {Current interest in and projected demands for large-scale
                      batteries are constantly expanding. In particular,
                      envisioning batteries as power source for electric vehicles,
                      it is important to move scientific research beyond
                      individual cells to much larger units such as battery pack
                      level. Marginal differences inside a battery pack may have
                      strong impact on the achievable battery performance and
                      cycle life. Hence, safer and more efficient management of
                      battery modules and packs is emphasized. This talk
                      highlights aspects of undesirable lithium metal plating in
                      lithium-ion batteries and the importance of detecting such
                      deposits based on electrochemical methods. The study
                      involved cycling of model battery modules comprised of up to
                      four cells and monitoring the evolution of lithium metal
                      deposits by 7Li NMR, where various operational conditions to
                      induce lithium metal plating were applied to individual
                      cells. After deposition, the cells were continuously cycled
                      within a battery pack to evaluate the effects of the lithium
                      metal deposits on the achievable performance.
                      Electrochemical methods, such as impedance measurements,
                      were invoked to detect faulty cells, and corresponding
                      fractions of lithium metal deposits were quantified by NMR
                      and GC-MS measurements. Malfunctioning cells exhibited
                      unfavourable impact on all the surroundings cells, as
                      monitored by electrochemical methods without disassembly of
                      considered modules. The insights of this study are
                      significant for designing strategies for better safety and
                      overall efficiency of large-scale battery packs.},
      cin          = {IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1149/MA2023-023499mtgabs},
      url          = {https://juser.fz-juelich.de/record/1025194},
}