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@ARTICLE{Lunghammer:850877,
      author       = {Lunghammer, S. and Ma, Qianli and Rettenwander, D. and
                      Hanzu, I. and Tietz, F. and Wilkening, H. M. R.},
      title        = {{B}ulk and grain-boundary ionic conductivity in sodium
                      zirconophosphosilicate {N}a 3 {Z}r 2 ({S}i{O} 4 ) 2 {PO} 4
                      ({NASICON})},
      journal      = {Chemical physics letters},
      volume       = {701},
      issn         = {0009-2614},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2018-04628},
      pages        = {147 - 150},
      year         = {2018},
      abstract     = {Sodium zirconophosphosilicates currently experience a kind
                      of renaissance as promising ceramic electrolytes for safe
                      all-solid-state Na batteries. Such energy storage systems
                      are an emerging option for next-generation technologies with
                      attractive cost due to the use of abundant elements as
                      sodium. To identify the right candidates their ion transport
                      properties need to be precisely studied. In many cases less
                      is known about the contributions of blocking grain
                      boundaries to the overall charge carrier transport. Here, we
                      took advantage of broadband impedance and conductivity
                      spectroscopy carried out at sufficiently low temperature to
                      make visible these two contributions for polycrystalline
                      Na3Zr2(SiO4)2PO4. It turned out that ion transport across
                      the grain boundaries of a sintered pellet do not greatly
                      hinder long-range ion dynamics. While bulk ion dynamics in
                      Na3Zr2(SiO4)2PO4 is characterized by 1.0 mS cm−1, the
                      grain boundary ionic conductivity is only slightly lower
                      viz. 0.7 mS cm−1. The latter value is of large
                      practical interest as it allows the realization of
                      all-solid-state Na batteries without strong interfering
                      resistances from grain boundaries.},
      cin          = {IEK-1 / IEK-12},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-12-20141217},
      pnm          = {131 - Electrochemical Storage (POF3-131) / SOFC - Solid
                      Oxide Fuel Cell (SOFC-20140602)},
      pid          = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)SOFC-20140602},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000432563600022},
      doi          = {10.1016/j.cplett.2018.04.037},
      url          = {https://juser.fz-juelich.de/record/850877},
}