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@ARTICLE{Serra:58178,
      author       = {Serra, J. M. and Vert, V. B. and Betz, M. and Haanappel, V.
                      A. C. and Meulenberg, W. A. and Tietz, F.},
      title        = {{S}creening of {A}-{S}ubstitution in the {S}ystem
                      {A}0.68{S}r0.3{F}e0.8{C}o0.2{O}3-{D}elta for {SOFC}
                      {C}athodes},
      journal      = {Journal of the Electrochemical Society},
      volume       = {155},
      issn         = {0013-4651},
      address      = {Pennington, NJ},
      publisher    = {Electrochemical Society},
      reportid     = {PreJuSER-58178},
      pages        = {B207 - B214},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Several elements were studied as potential A-site
                      substituents in the perovskite
                      A(0.68)Sr(0.3)Fe(0.8)Co(0.2)O(3-delta) system. The
                      considered elements included La, Pr, Sm, Nd, Er, Eu, Gd, Dy,
                      and Ba. The multicomponent oxides were prepared following a
                      complexation-polymerization-pyrolysis method. The materials
                      were characterized by X-ray diffraction, thermal
                      dilatometry, and electrical conductivity under different
                      oxidant atmospheres. The obtained materials were studied as
                      solid oxide fuel cell cathodes, preparing porous films on
                      top anode-supported cells with a yttria-stabilized zirconia
                      electrolyte and a CGO protective layer. The complete cell
                      was characterized by direct current voltamperometry using
                      air and wet H-2 as fuel, whereas the porosity of the layer
                      was studied by gas diffusion experiments after
                      electrochemical testing. Oxygen conduction was investigated
                      on gastight membranes prepared for La- and Pr-based
                      materials under flow of air and helium (sweep) in the range
                      from 650 to 1000 degrees C. Pure perovskite structure was
                      not obtained for the cations with the smallest ionic radii.
                      The materials with the best electrochemical performance at
                      650 degrees C contained Pr, Sm, La, and Ba. The good
                      electrochemical performance seems to be principally related
                      to the intrinsic electrocatalytic properties of the material
                      (perovskite or small clusters of the single oxide) because
                      no clear correlations of the electrochemical performance and
                      ionic conductivity, electronic conductivity, or gas
                      diffusivity could be found. The electrochemical performance
                      at 650 degrees C could be correlated with the catalytic
                      activity for methane oxidation in a fixed bed reactor in the
                      same temperature range. Finally, the catalytic promotion of
                      a Pr- containing perovskite was evaluated by impregnation
                      with Pd. (c) 2007 The Electrochemical Society.},
      keywords     = {J (WoSType)},
      cin          = {IEF-1 / IEF-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB809 / I:(DE-Juel1)VDB811},
      pnm          = {Rationelle Energieumwandlung / SOFC - Solid Oxide Fuel Cell
                      (SOFC-20140602)},
      pid          = {G:(DE-Juel1)FUEK402 / G:(DE-Juel1)SOFC-20140602},
      shelfmark    = {Electrochemistry / Materials Science, Coatings $\&$ Films},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000251906800028},
      doi          = {10.1149/1.2818766},
      url          = {https://juser.fz-juelich.de/record/58178},
}