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@ARTICLE{Pfeiffer:1005135,
      author       = {Pfeiffer, Felix and Diddens, Diddo and Weiling, Matthias
                      and Baghernejad, Masoud},
      title        = {{S}tudy of a {H}igh-{V}oltage {NMC} {I}nterphase in the
                      {P}resence of a {T}hiophene {A}dditive {R}ealized by
                      {O}perando {SHINERS}},
      journal      = {ACS applied materials $\&$ interfaces},
      volume       = {15},
      number       = {5},
      issn         = {1944-8244},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2023-01323},
      pages        = {6676 - 6686},
      year         = {2023},
      abstract     = {Improving the electrochemical properties and cycle life of
                      high-voltage cathodes in lithium-ion batteries requires a
                      deep understanding of the structural properties and failure
                      mechanisms at the cathode electrolyte interphase (CEI). We
                      present a study implementing an advanced Raman spectroscopy
                      technique to specifically address the compositional features
                      of interphase during cell operation. Our operando technique,
                      shell-isolated nanoparticle-enhanced Raman spectroscopy
                      (SHINERS), provides a reliable platform to investigate the
                      dynamics of the interphase structure and elucidate the
                      compositional changes near the cathode surface. To improve
                      the CEI properties, thiophene was introduced and
                      investigated as an effective, high-voltage film-forming
                      additive by largely diminishing the capacity fading
                      triggered at high potentials in LiNi1/3Co1/3Mn1/3O2
                      cathodes. While the cells without thiophene show severe
                      capacity fading, cells with an optimized concentration of
                      thiophene exhibit a significant performance improvement.
                      Operando SHINERS detects the presence of a stable CEI. The
                      results suggest that the composition of the CEI is dominated
                      by polythiophene and copolymerization products of ethylene
                      carbonate with thiophene, which protects the electrolyte
                      components from further decomposition. The formation
                      mechanism of the polymeric film was modeled using quantum
                      chemistry calculations, which shows good agreement with the
                      experimental data.},
      cin          = {IEK-12},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1223 - Batteries in Application (POF4-122) /
                      Elektrolytformulierungen für Lithiumbatterien der nächsten
                      Generation mit großer Energiedichte und hoher
                      Beständigkeit (13XP5129)},
      pid          = {G:(DE-HGF)POF4-1223 / G:(BMBF)13XP5129},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {36702454},
      UT           = {WOS:000925732300001},
      doi          = {10.1021/acsami.2c17958},
      url          = {https://juser.fz-juelich.de/record/1005135},
}