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@ARTICLE{Klein:907774,
      author       = {Klein, Sven and Haneke, Lukas and Harte, Patrick and Stolz,
                      Lukas and van Wickeren, Stefan and Borzutzki, Kristina and
                      Nowak, Sascha and Winter, Martin and Placke, Tobias and
                      Kasnatscheew, Johannes},
      title        = {{S}uppressing {E}lectrode {C}rosstalk and {P}rolonging
                      {C}ycle {L}ife in {H}igh‐{V}oltage {L}i {I}on {B}atteries:
                      {P}ivotal {R}ole of {F}luorophosphates in {E}lectrolytes},
      journal      = {ChemElectroChem},
      volume       = {9},
      number       = {13},
      issn         = {2196-0216},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2022-02203},
      pages        = {e202200469},
      year         = {2022},
      abstract     = {High-voltage Li ion batteries are compromised by lower
                      cycle life due to enhanced degradation of cathode material,
                      e.g. NCM523. Crucial part is the initiated electrode
                      crosstalk, i.e. transition metal (TM) dissolution from the
                      cathode and subsequent deposition on the anode, as it forces
                      formation of high surface area lithium, capacity losses and
                      risk of Li dendrite penetration, finally leading to an
                      abrupt end-of-life (= rollover failure). Hence, suppression
                      of this failure cascade is the pivotal strategy to prolong
                      cycle life. A pragmatic approach is the electrolyte
                      manipulation towards formation/presence of fluorophosphates,
                      as they effectively suppress electrode crosstalk via TM
                      scavenging. Either, they can be intrinsically formed, e.g.
                      via elimination of ethylene carbonate (EC) solvent (=
                      EC-free electrolyte), or simply externally added, e.g. via
                      (good-soluble) lithium difluorophosphate electrolyte
                      additive. Their effectiveness is demonstrated for
                      conventional EC-based and EC-free electrolytes at limiting
                      conditions (4.5 and 4.6 V, respectively). In parallel to
                      supportive approach combinations ( e.g. coating), also
                      destructive combinations are highlighted, i.e. approaches,
                      which even decrease the fluorophosphate content, e.g.
                      vinylene carbonate additive in EC-free electrolytes.
                      Finally, by demonstrating the value of
                      (concentration-optimized) fluorophosphates, appropriate
                      benchmark electrolyte formulations for high-voltage LIBs are
                      discussed.},
      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},
      UT           = {WOS:000802894700001},
      doi          = {10.1002/celc.202200469},
      url          = {https://juser.fz-juelich.de/record/907774},
}