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@ARTICLE{Overhoff:1029093,
      author       = {Overhoff, Gerrit Michael and Verweyen, Elisabeth and
                      Roering, Philipp and Winter, Martin and Brunklaus, Gunther},
      title        = {{E}nhancing the {E}lectrochemical {P}erformance of
                      {B}lended {S}ingle-{I}on {C}onducting {P}olymers by {S}mart
                      {M}odification of the {P}olymer {S}tructure},
      journal      = {ACS applied energy materials},
      volume       = {7},
      number       = {14},
      issn         = {2574-0962},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {FZJ-2024-04953},
      pages        = {5893-5904},
      year         = {2024},
      abstract     = {Single lithium-ion conducting polymers represent a
                      promisingclass of electrolytes that potentially enable the
                      utilization of lithium metal anodes in next-generation
                      batteries. The immobilization of anions within the
                      polymer’s structure in principle mitigates issues related
                      to localized ion depletion, resulting in decreased cell
                      polarization when compared to common dual-ion conductors
                      comprising poly(ethylene oxide) and lithium salt. However,
                      the intrinsic rigidity of these materials often necessitates
                      incorporation of flowable components and blending with other
                      polymers, such as poly(vinylidene
                      fluoride-co-hexafluoropropylene) (PVdF-HFP), to enhance the
                      mechanical flexibility of the resulting polymer membranes.
                      Within polymer blends, distinct phases may be present, and
                      the distribution of plasticizers among these phases is
                      highly crucial as they act as carrier molecules for Li+
                      transport. In this study, we thus explored the impact of
                      polymer chain modification from a rigid aromatic single-ion
                      conducting polymer to a more flexible polymer by introducing
                      ethylene glycol units into the backbone. Notably, this
                      alteration yielded a substantial decrease of 100 °C of the
                      glass transition temperature and a 6-fold increase in ionic
                      conductivity (0.5 mS cm−1 @ 40 °C) after blending with
                      PVdF-HFP and addition of ethylene carbonate/dimethyl
                      carbonate. Atomistic molecular dynamics simulations suggest
                      that this enhancement can be attributed to a high
                      concentration of plasticizer within the Li+ containing
                      phase. In symmetric Li||Li cells, exceptional performance
                      was achieved, demonstrating operation at high limiting
                      current density and successful plating/stripping for 1000 h
                      at 0.2 mA cm−2. When paired with high-voltage NMC
                      cathodes, the introduced polymer structures exhibited
                      noteworthy capacity retention after 800 cycles, emphasizing
                      advantages brought forth by flexible and adapted polymer
                      architecture.},
      cin          = {IMD-4},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IMD-4-20141217},
      pnm          = {1222 - Components and Cells (POF4-122) / 1221 -
                      Fundamentals and Materials (POF4-122) / FB2-POLY -
                      Zellplattform Polymere (BMBF-13XP0429A)},
      pid          = {G:(DE-HGF)POF4-1222 / G:(DE-HGF)POF4-1221 /
                      G:(DE-Juel1)BMBF-13XP0429A},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001263167400001},
      doi          = {10.1021/acsaem.4c01117},
      url          = {https://juser.fz-juelich.de/record/1029093},
}