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@ARTICLE{Kornely:15844,
      author       = {Kornely, M. and Neumann, A. and Menzler, N.H. and Leonide,
                      A. and Weber, A. and Ivers-Tiffée, E.},
      title        = {{D}egradation of anode supported cell ({ASC}) performance
                      by {C}r-poisoning},
      journal      = {Journal of power sources},
      volume       = {196},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-15844},
      pages        = {7203 - 7208},
      year         = {2011},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Performance and stability of solid oxide fuel cells (SOFC)
                      have been continuously improved at the single-cell level.
                      Connecting the individual cells by a metallic interconnector
                      (MIC) in a stack, though, yields remarkable losses in
                      performance and leads to an enhanced degradation. These
                      effects are attributed to, inter alia, Cr evaporation from
                      the MIC and, thus, Cr poisoning of the cathode.To determine
                      the degradation rate caused by Cr poisoning, this paper
                      focuses on the differences in single cell performance and
                      short-term stability by using either an inert flowfielcl or
                      a flowfield made of a chromia-forming alloy. To provide a
                      homogeneous current collection and gas distribution over the
                      complete cathode area and to avoid a direct contact between
                      MIC made of Crofer22APU and LSM, a platinum mesh was used as
                      current collector. The cell performance was evaluated by
                      analyzing its current-voltage characteristics and using
                      electrochemical impedance spectroscopy.A detailed analysis
                      of impedance spectra by the distribution of relaxation times
                      (DRT) and a subsequent Complex Nonlinear Least Squares
                      (CLNS) fit facilitated the separation of anodic and cathodic
                      polarization processes. In the presence of a chromia-forming
                      alloy the polarization resistance of the cathode showed a
                      significantly higher initial value (+64 m Omega.cm(2)) than
                      without and a high degradation rate of 213 mu Omega.cm(2)
                      h(-1) during 280 h of galvanostatic operation at 800 degrees
                      C. (C) 2010 Elsevier B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {IEK-1},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {Rationelle Energieumwandlung / SOFC - Solid Oxide Fuel Cell
                      (SOFC-20140602)},
      pid          = {G:(DE-Juel1)FUEK402 / G:(DE-Juel1)SOFC-20140602},
      shelfmark    = {Electrochemistry / Energy $\&$ Fuels},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000292661800020},
      doi          = {10.1016/j.jpowsour.2010.10.033},
      url          = {https://juser.fz-juelich.de/record/15844},
}