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@ARTICLE{Pfeiffer:1008452,
      author       = {Pfeiffer, Felix and Diddens, Diddo and Weiling, Matthias
                      and Frankenstein, Lars and Kühn, Sebastian and
                      Cekic-Laskovic, Isidora and Baghernejad, Masoud},
      title        = {{Q}uadrupled {C}ycle {L}ife of {H}igh‐{V}oltage
                      {N}ickel‐{R}ich {C}athodes: {U}nderstanding the
                      {E}ffective {T}hiophene‐{B}oronic {A}cid‐{B}ased {CEI}
                      via {O}perando {SHINERS}},
      journal      = {Advanced energy materials},
      volume       = {13},
      number       = {25},
      issn         = {1614-6832},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2023-02352},
      pages        = {2300827},
      year         = {2023},
      abstract     = {Increasing the cell voltage of lithium-ion batteries (LIBs)
                      is a straightforward approach to increasing their capacity
                      and energy density. However, state-of-the-art cathode
                      materials like LiNixMnyCo1-x-yO2 (NMC) suffer from severe
                      failure mechanisms at high operating voltages, significantly
                      degrading the performance and cycle life of the cells.
                      Notably, an effective cathode electrolyte interphase (CEI)
                      mitigates these failure mechanisms. Nevertheless, a deep
                      understanding of the formation mechanisms and properties of
                      the CEI is necessary to tailor effective interphases. This
                      study introduces a promising electrolyte additive for high
                      operating voltage NMC811||graphite cells. Implementing an
                      optimized concentration of 3-thiophene boronic acid
                      (3-Thp-BOH) significantly enhances the cells' performance
                      and reduces capacity fading, resulting in a quadrupled cycle
                      life and a six-times higher accumulated specific energy.
                      Operando shell-isolated nanoparticle-enhanced Raman
                      spectroscopy (SHINERS) is employed to shed light on the
                      formation mechanism and molecular composition of CEI during
                      cell operation, proving that the presence of the additive
                      results in the formation of a complex 3-Thp-BOH-based
                      polymeric CEI on the NMC811 surface. The CEI investigation
                      is additionally supported by scanning electron microscopy
                      and energy dispersive X-ray analysis and highly accurate
                      quantum chemistry modeling of the suggested polymerization
                      mechanisms.},
      cin          = {IEK-12},
      ddc          = {050},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1222 - Components and Cells (POF4-122) /
                      Elektrolytformulierungen für Lithiumbatterien der nächsten
                      Generation mit großer Energiedichte und hoher
                      Beständigkeit (13XP5129)},
      pid          = {G:(DE-HGF)POF4-1222 / G:(BMBF)13XP5129},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000993877100001},
      doi          = {10.1002/aenm.202300827},
      url          = {https://juser.fz-juelich.de/record/1008452},
}