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@INPROCEEDINGS{Schwiers:906613,
      author       = {Schwiers, Alexander and Lenser, Christian and Menzler,
                      Norbert H.},
      title        = {{I}nfluence of dopants on contact resistance in
                      anode-supported solid oxide fuel cells ({AS}-{SOFC}s)
                      between doped ceria and {YSZ}},
      reportid     = {FZJ-2022-01555},
      year         = {2022},
      abstract     = {Influence of dopants on contact resistance in anode
                      supported solid oxide fuel cells (AS-SOFCs) between doped
                      ceria and YSZAlexander Schwiers, Christian Lenser, Norbert
                      H. MenzlerForschungszentrum Jülich GmbH, Institute of
                      Energy and Climate Research (IEK),IEK-1: Materials Synthesis
                      and Processing.Wilhelm-Johnen-Straße, 52428
                      Juelich/GermanyTel.: +49 2461
                      61-96735a.schwiers@fz-juelich.deAbstractAnode-supported
                      solid oxide fuel cells use Ni/YSZ as anode which makes them
                      unflexible in using biogas due to strong degradation. To
                      improve fuel flexibility, more degradation-tolerant
                      materials have to be implemented. Doped ceria is promising
                      since it shows increased degradation tolerance and higher
                      ionic conductivities in the intermediate temperature regime
                      and some electrochemical activity.However, integration of
                      ceria into a cell is difficult because high sintering
                      temperatures are needed to achieve the necessary
                      microstructure. Implementing ceria between the substrate and
                      electrolyte leads to interdiffusion during sintering and the
                      formation of a Ce1-xZxrO2 phase. In addition to lower
                      conductivity of the mixed phase, the roughening at the
                      interface between anode and electrolyte leads to an increase
                      in polarization resistance of the electrode due to
                      interdiffusion. We investigated the influence of the dopant
                      in X0.1Gd0.9O1.95 (X = Sm, Gd, or Y) on the interdiffusion
                      with 8YSZ. Powder mixtures of YSZ and XDC were prepared and
                      sintered at different temperatures. The interdiffusion
                      behavior was analyzed by XRD and Rietveld refinement.
                      Interdiffusion in layered systems was investigated by SEM
                      analysis. Impedance spectroscopy is used to analyze the
                      influence of the dopant on contact resistance. SDC shows
                      less interdiffusion, Ce1-xZrxO2 formation and a narrower
                      interdiffusion zone. Impedance analysis indicates a
                      different behavior compared to Ni-GDC and Ni-YSZ
                      electrodes.},
      month         = {Mar},
      date          = {2022-03-07},
      organization  = {Ceramics 2022, online (Germany), 7 Mar
                       2022 - 9 Mar 2022},
      subtyp        = {After Call},
      cin          = {IEK-1},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {1231 - Electrochemistry for Hydrogen (POF4-123) / SOFC -
                      Solid Oxide Fuel Cell (SOFC-20140602)},
      pid          = {G:(DE-HGF)POF4-1231 / G:(DE-Juel1)SOFC-20140602},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/906613},
}