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@ARTICLE{Yin:838483,
      author       = {Yin, Xiaoyan and Bencze, Laszlo and Motalov, Vladimir and
                      Spatschek, Robert and Singheiser, Lorenz},
      title        = {{T}hermodynamic {P}erspective of {S}r-{R}elated
                      {D}egradation {I}ssues in {SOFC}s},
      journal      = {International journal of applied ceramic technology},
      volume       = {15},
      issn         = {1546-542X},
      address      = {Westerville, Ohio},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2017-07080},
      pages        = {380–390},
      year         = {2018},
      abstract     = {(La,Sr)(Co,Fe)O3-δ is very common as cathode material in
                      SOFC applications. Sr in this type of cathode material is
                      very reactive to form secondary phases with other oxides,
                      which affect micro-structures and properties of the cathode
                      materials, GDC layers and ZrO2-based electrolytes. The
                      Sr-related degradation issues, Cr poisoning and volatile Sr
                      species formation, are studied. As supplement to existing
                      experimental knowledge on Cr poisoning, specific
                      thermodynamic aspects for Cr poisoning are discussed. The
                      thermodynamic calculations show that the partial pressure
                      pCrO3 has a stronger temperature dependence than pCrO2(OH)2,
                      and when considering the reaction between SrO and CrO3(g),
                      dependent on different pCrO3 and pO2, different Sr–Cr–O
                      compounds SrCrO4, SrCrO3, Sr3Cr2O8 or Sr2CrO4 could be
                      formed. In addition, thermodynamic calculations show that in
                      the presence of water vapor, formation of volatile Sr(OH)2
                      is possible as well. pSr(OH)2 depends on temperature, pH2O
                      and SrO activity and can be of the same order of magnitude
                      as pCrO2(OH)2. Volatile Sr(OH)2 can diffuse through the
                      porous GDC layer and react with ZrO2-based electrolytes to
                      form SrZrO3 precipitates. The reaction between gaseous Sr
                      species and 8YSZ sheet is studied experimentally. The
                      surface of the 8YSZ sheet is investigated by SEM coupled
                      with EDS, confirming the deposition of Sr.},
      cin          = {IEK-2},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {111 - Efficient and Flexible Power Plants (POF3-111)},
      pid          = {G:(DE-HGF)POF3-111},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000424816400013},
      doi          = {10.1111/ijac.12809},
      url          = {https://juser.fz-juelich.de/record/838483},
}