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@ARTICLE{Zhao:1029437,
      author       = {Zhao, Tong and Samanta, Bibek and de Irujo-Labalde, Xabier
                      Martinez and Whang, Grace and Yadav, Neelam and Kraft,
                      Marvin and Adelhelm, Philipp and Hansen, Michael Ryan and
                      Zeier, Wolfgang},
      title        = {{S}odium {M}etal {O}xyhalides ${N}a {M} {OC}l_4 ( {M} =
                      {N}b, {T}a)$ with {H}igh {I}onic {C}onductivities},
      journal      = {ACS materials letters},
      volume       = {6},
      issn         = {2639-4979},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {FZJ-2024-05126},
      pages        = {3683 - 3689},
      year         = {2024},
      note         = {Zudem unterstützt durch BMBF Projekt (03XP0525B) und},
      abstract     = {Halide-based ionic conductors have attracted growing
                      interest as solid electrolyte candidates because of their
                      suggested electrochemical oxidation stability and
                      deformability. However, most of the discovered sodium metal
                      halides exhibit relatively low ionic conductivities. To
                      address this, a new class of mechanochemically stabilized,
                      low-crystalline sodium metal oxyhalides $NaMOCl_4 (M = Nb,
                      Ta)$ is developed. By using the combination of scanning
                      electron microscopy–energy dispersive X-ray spectroscopy,
                      X-ray diffraction, pair distribution function analysis,
                      Raman spectroscopy, and nuclear magnetic resonance
                      spectroscopy, we qualitatively explored the composition and
                      local structure of these oxyhalides. Notably, $NaNbOCl_4$
                      and $NaTaOCl_4$ exhibit high ionic conductivities of 1.2 and
                      1.5 $mScm^{–1}$, respectively. Although the instability of
                      $NaMOCl_4$ against Na excludes their use as stand-alone
                      separators in solid-state sodium metal batteries, the
                      successful operation of a solid-state battery employing
                      $NaTaOCl_4$ as a catholyte at room temperature demonstrates
                      that $NaMOCl_4$ is a promising catholyte material.},
      cin          = {IMD-4},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IMD-4-20141217},
      pnm          = {1221 - Fundamentals and Materials (POF4-122) / DFG project
                      G:(GEPRIS)459785385 - Röntgenpulverdiffraktometer
                      (459785385)},
      pid          = {G:(DE-HGF)POF4-1221 / G:(GEPRIS)459785385},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001271966800001},
      doi          = {10.1021/acsmaterialslett.4c01145},
      url          = {https://juser.fz-juelich.de/record/1029437},
}