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@ARTICLE{Liu:1032626,
      author       = {Liu, Limin and Ma, Qianli and Zhou, Xiaoliang and Ding,
                      Ziming and Grüner, Daniel and Kübel, Christian and Tietz,
                      Frank},
      title        = {{S}imultaneously improving sodium ionic conductivity and
                      dendrite behavior of {N}a{SICON} ceramics by grain-boundary
                      modification},
      journal      = {Journal of power sources},
      volume       = {626},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2024-06392},
      pages        = {235773 -},
      year         = {2025},
      abstract     = {Developing highly conductive and reliable
                      solid-electrolytes (SEs) is still important for the
                      advancement of solid-statesodium batteries. NaSICON-type
                      polycrystalline SEs exhibit the dominance of grain-boundary
                      resistance tothe total resistance, which is mainly due to
                      the thermal expansion anisotropy of NaSICON-type lattices.
                      In thisstudy, we modify the grain boundaries of NaSICON-type
                      Na3.4Zr2Si2.4P0.6O12 (NZSP) by adding 2.5 $mol\%Na3LaP2O8$
                      (NLP) to counteract the effect of thermal expansion
                      anisotropy. NLP does not serve as a sintering aidfor NZSP
                      because the sintering temperature and relative density of
                      NZSP is not changed. The total conductivity ofmodified NZSP
                      increases to 7.1 mS cm􀀀 1 at 25 ◦C, surpassing other
                      reported polycrystalline oxide SEs. Thecritical current
                      density of Na | modified NZSP | Na symmetric cells increases
                      to 22 mA cm􀀀 2. The cells cansurvive under long-term
                      galvanostatic cycling up to 10 mA cm􀀀 2, indicating the
                      unprecedented dendrite tolerance.Remarkably, the main
                      failure mode in these cells shifts from Na-dendrite
                      short-circuiting to the loop ofsubstantial polarizations and
                      short-circuits.},
      cin          = {IMD-2 / IMD-1},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IMD-2-20101013 / I:(DE-Juel1)IMD-1-20101013},
      pnm          = {1221 - Fundamentals and Materials (POF4-122) / 1222 -
                      Components and Cells (POF4-122) / DFG project
                      G:(GEPRIS)390874152 - EXC 2154: POLiS - Post Lithium Storage
                      Cluster of Excellence (390874152)},
      pid          = {G:(DE-HGF)POF4-1221 / G:(DE-HGF)POF4-1222 /
                      G:(GEPRIS)390874152},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001359959700001},
      doi          = {10.1016/j.jpowsour.2024.235773},
      url          = {https://juser.fz-juelich.de/record/1032626},
}