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@ARTICLE{Zeng:878726,
      author       = {Zeng, Fanlin and Malzbender, Jürgen and Baumann, Stefan
                      and Krüger, Manja and Winnubst, Louis and Guillon, Olivier
                      and Meulenberg, Wilhelm A.},
      title        = {{P}hase and microstructural characterizations for
                      {C}e0.8{G}d0.2{O}2--{F}e{C}o2{O}4 dual phase oxygen
                      transport membranes},
      journal      = {Journal of the European Ceramic Society},
      volume       = {40},
      number       = {15},
      issn         = {0955-2219},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-03026},
      pages        = {5646 - 5652},
      year         = {2020},
      abstract     = {Dual phase oxygen transport membranes were prepared via
                      solid state reaction at 1200 ℃. The sintered membranes
                      were characterized via X-ray diffraction, back scattered
                      electron microscopy and electron backscatter diffraction,
                      and associated with image analysis and calculations to
                      quantify phase compositions and microstructural features
                      including volume fractions, grain sizes, and contiguity. The
                      characterizations reveal a multi-phase system containing
                      Ce1-xGdxO2-δ’ (x ≈ 0.1) (CGO10), and FeyCo3-yO4 (0.2 <
                      y < 1.2) (FCO), CoO and Gd0.85Ce0.15Fe0.75Co0.25O3 (GCFCO)
                      in the sintered membranes. In addition, a novel model is
                      utilized to assess the evolution of the ambipolar
                      conductivity with respect to microstructural features. Both
                      experimental and calculated results indicate that if the
                      grain sizes of all phases in the composites are similar, the
                      optimal ambipolar conductivity is reached with a volume
                      ratio of ionic conducting phase to electronic conducting
                      phase close to 4:1. Meanwhile, the GCFCO phase dominates the
                      effective electronic conductivity.},
      cin          = {IEK-1 / IEK-2 / JARA-ENERGY},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013 /
                      $I:(DE-82)080011_20140620$},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000564729500001},
      doi          = {10.1016/j.jeurceramsoc.2020.06.035},
      url          = {https://juser.fz-juelich.de/record/878726},
}