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@ARTICLE{Lu:906268,
      author       = {Lu, Xin and Camara, Osmane and Liu, Zigeng and Windmüller,
                      Anna and Tsai, Chih-Long and Tempel, Hermann and Yu,
                      Shicheng and Kungl, Hans and Eichel, Rüdiger-A.},
      title        = {{T}uning the moisture stability of multiphase β‐{L}i 3
                      {PS} 4 solid electrolyte materials},
      journal      = {Electrochemical science advances},
      volume       = {3},
      number       = {2},
      issn         = {2698-5977},
      address      = {Weinheim},
      publisher    = {Wiley-VCH Verlag GmbH $\&$ Co KGaA},
      reportid     = {FZJ-2022-01334},
      pages        = {e2100208},
      year         = {2022},
      abstract     = {Efficiently improving the moisture stability of β-Li3PS4
                      materials could significantly reduce production costs and
                      eventually enable the mass application. Nanoporous
                      multiphase β-Li3PS4 materials prepared via
                      solvent-assistant routes usually contain solvent or solvent
                      decomposition segments associated with the amorphous Li3PS4
                      phase in their structures. Herein, the solvent ethyl
                      propionate (EP) remains in the β-Li3PS4 even after 220 h of
                      annealing at 220°C. The possibility of tuning the moisture
                      stability of β-Li3PS4 by adjusting the content of the
                      solvent is investigated by environmental scanning electron
                      microscopy (ESEM) combined with other structural analysis
                      techniques. The results demonstrated that the
                      hydrogen-containing amorphous Li3PS4 not only stabilizes the
                      β-phase at room temperature but also improves the moisture
                      stability of the material. Although the rapid hydrolysis
                      occurs on the surface of solvent-containing β-Li3PS4
                      materials under ambient conditions within 10 s, with 4
                      $wt\%$ EP content, the material can be exposed to $1.6\%$
                      relative humidity (R.H.) for at least 8 h without any
                      structural or microstructural change. Even with the lower
                      amount of EP (1.2 $wt\%)$ in the Li3PS4 structure, the
                      material can withstand $1\%$ R.H. for more than 8 h, which
                      allows the material to be manufactured in a dry room. Our
                      observation proposes a simple method to slightly modify the
                      moisture stability of β-Li3PS4 to match the different
                      manufacturing conditions.},
      cin          = {IEK-9},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1223 - Batteries in Application (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1223},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001138657200013},
      doi          = {10.1002/elsa.202100208},
      url          = {https://juser.fz-juelich.de/record/906268},
}