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@ARTICLE{Hoffknecht:1005101,
      author       = {Hoffknecht, Jan-Philipp and Wettstein, Alina and Atik,
                      Jaschar and Krause, Christian and Thienenkamp, Johannes and
                      Brunklaus, Gunther and Winter, Martin and Diddens, Diddo and
                      Heuer, Andreas and Paillard, Elie},
      title        = {{C}oordinating {A}nions “to the {R}escue” of the
                      {L}ithium {I}on {M}obility in {T}ernary {S}olid {P}olymer
                      {E}lectrolytes {P}lasticized {W}ith {I}onic {L}iquids},
      journal      = {Advanced energy materials},
      volume       = {13},
      number       = {1},
      issn         = {1614-6832},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2023-01300},
      pages        = {2202789 -},
      year         = {2023},
      abstract     = {Lithium salts with low coordinating anions such as
                      bis(trifluoromethanesulfonyl)imide (TFSI) have been the
                      state-of-the-art for polyethylene oxide (PEO)-based
                      “dry” polymer electrolytes for 3 decades. Plasticizing
                      PEO with TFSI-based ionic liquids (ILs) to form ternary
                      solid polymer electrolytes (TSPEs) increases conductivity
                      and Li+ diffusivity. However, the Li+ transport mechanism is
                      unaffected compared to their “dry” counterparts and is
                      essentially coupled to the dynamics of the polymer host
                      matrix, which limits Li+ transport improvement. Thus, a
                      paradigm shift is hereby suggested: the utilization of more
                      coordinating anions such as
                      trifluoromethanesulfonyl-N-cyanoamide (TFSAM), able to
                      compete with PEO for Li+ solvation, to accelerate the Li+
                      transport and reach a higher Li+ transference number. The
                      Li–TFSAM interaction in binary and ternary TFSAM-based
                      electrolytes is probed by experimental methods and discussed
                      in the context of recent computational results. In PEO-based
                      TSPEs, TFSAM drastically accelerates the Li+ transport
                      (increases Li+ transference number by a factor 6 and the Li+
                      conductivity by 2–3) and computer simulations reveal that
                      lithium dynamics are effectively re-coupled from polymer to
                      anion dynamics. Last, this concept of coordinating anions in
                      TSPEs is successfully applied in LFP||Li metal cells leading
                      to enhanced capacity retention $(86\%$ after 300 cycles) and
                      an improved rate performance at 2C.},
      cin          = {IEK-12},
      ddc          = {050},
      cid          = {I:(DE-Juel1)IEK-12-20141217},
      pnm          = {1222 - Components and Cells (POF4-122) / 1223 - Batteries
                      in Application (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1222 / G:(DE-HGF)POF4-1223},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000888918600001},
      doi          = {10.1002/aenm.202202789},
      url          = {https://juser.fz-juelich.de/record/1005101},
}