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@ARTICLE{Tavabi:189387,
      author       = {Tavabi, Amir Hossein and Arai, S. and Muto, S. and Tanji,
                      T. and Dunin-Borkowski, Rafal},
      title        = {{I}n situ transmission electron microscopy of ionic
                      conductivity and reaction mechanism in ultrathin solid oxide
                      fuel cells},
      journal      = {Microscopy and microanalysis},
      volume       = {20},
      number       = {6},
      issn         = {1435-8115},
      address      = {New York, NY},
      publisher    = {Cambridge University Press},
      reportid     = {FZJ-2015-02562},
      pages        = {1817 - 1825},
      year         = {2014},
      abstract     = {Solid oxide fuel cells (SOFCs) are promising candidates for
                      use in alternative energy technologies. A full understanding
                      of the reaction mechanisms in these dynamic material systems
                      is required to optimize device performance and overcome
                      present limitations. Here, we show that in situ transmission
                      electron microscopy (TEM) can be used to study redox
                      reactions and ionic conductivity in SOFCs in a gas
                      environment at elevated temperature. We examine model
                      ultrathin half and complete cells in two environmental TEMs
                      using off-axis electron holography and electron energy-loss
                      spectroscopy. Our results from the model cells provide
                      insight into the essential phenomena that are important for
                      the operation of commercial devices. Changes in the
                      activities of dopant cations in the solid electrolyte are
                      detected during oxygen anion conduction, demonstrating the
                      key role of dopants in electrolyte architecture in SOFCs.},
      cin          = {PGI-5},
      ddc          = {570},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
      pid          = {G:(DE-HGF)POF2-42G41},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000347233400020},
      doi          = {10.1017/S143192761401349X},
      url          = {https://juser.fz-juelich.de/record/189387},
}