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@ARTICLE{Weiling:1044912,
      author       = {Weiling, Matthias and Pfeiffer, Felix and Lechtenfeld,
                      Christian and Stuckenberg, Silvan and Fehlings, Nick and
                      Frankenstein, Lars and Küpers, Verena and Wang, Jian-Fen
                      and Nowak, Sascha and Baghernejad, Masoud},
      title        = {{C}omprehensive {S}tudy on {C}ell {C}omponents in
                      {H}igh‐{V}oltage {P}ouch {C}ells with {L}ithium
                      {P}erchlorate: {D}ecomposition, {T}ransesterification,
                      {C}hlorination, {D}eposition, and {S}elf‐{D}ischarge},
      journal      = {Batteries $\&$ supercaps},
      volume       = {8},
      number       = {4},
      issn         = {2566-6223},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2025-03434},
      pages        = {e202400568},
      year         = {2025},
      abstract     = {Battery development has traditionally focused on high
                      energy and long lifetime cells, but there is now a shift
                      towards their sustainability and safety. One example of this
                      trend is the search for fluorine-free conductive salts. The
                      overwhelming majority of lithium-ion conductive salts
                      contain fluorine, which is critical regarding their
                      environmental impact, sustainability, and toxicology. In
                      this study, we perform a comprehensive investigation of the
                      performance and aging mechanisms of cell components with
                      LiClO4 as conductive salt in high-voltage NMC622‖Graphite
                      pouch cells. The cells containing LiClO4 show poorer
                      electrochemical performance compared to their LiPF6
                      equivalents. However, to the best of our knowledge, a
                      mechanistic understanding of the effect of LiClO4 on the
                      aging of electrode and electrolyte components for
                      high-voltage cells is largely missing. Developing such an
                      understanding will pave the way toward designing alternative
                      salts to LiPF6, ultimately leading to fluorine-free and more
                      sustainable battery cells. Our results show, that the
                      chlorination of ethyl methyl carbonate at both methyl and
                      ethyl groups and the formation of large (Liw)AlxOyClz
                      composite deposits on the cathode surface result from
                      perchlorate degradation at the cathode. This leads to
                      increased cell resistance, reduced capacity retention, and
                      accelerated degradation of the LiClO4-containing
                      electrolytes.},
      cin          = {IMD-4},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IMD-4-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122) / 1222 -
                      Components and Cells (POF4-122) / Elektrolytformulierungen
                      für Lithiumbatterien der nächsten Generation mit großer
                      Energiedichte und hoher Beständigkeit (13XP5129)},
      pid          = {G:(DE-HGF)POF4-1221 / G:(DE-HGF)POF4-1222 /
                      G:(BMBF)13XP5129},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1002/batt.202400568},
      url          = {https://juser.fz-juelich.de/record/1044912},
}