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@ARTICLE{Balaguer:908321,
      author       = {Balaguer, Maria and Sohn, Yoo Jung and Kobertz, Dietmar and
                      Kasatikov, Sergey and Fantin, Andrea and Müller, Michael
                      and Menzler, Norbert H. and Guillon, Olivier and Ivanova,
                      Mariya},
      title        = {{C}haracterization of {Y} and {M}n co-substituted
                      {B}a{Z}r{O}3 ceramics: {M}aterial properties as a function
                      of the substituent concentration},
      journal      = {Solid state ionics},
      volume       = {382},
      issn         = {0167-2738},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2022-02540},
      pages        = {115959 -},
      year         = {2022},
      abstract     = {Innovations in materials science are the key element for
                      solving technological challenges. Various energy and
                      environmental applications require designing materials with
                      tailored compositions, microstructures and specific
                      target-oriented performance. Y and Mn co-substituted BaZrO3,
                      e.g. BaZr0.85Y0.15Mn0.05O3-δ, has previously attracted
                      attention as a membrane material for H2 separation from gas
                      mixtures due to its mixed proton-electron conductivity
                      leading to appreciable levels of H2-flux at elevated
                      temperatures and its good thermo-chemical stability under
                      reducing environments. In the present work, we developed
                      ceramic materials within the BaZr0.8Y0.2-xMnxO3-δ series,
                      where x = 0.02–0.15. The study of their functional
                      properties in dependence of the Y-to-Mn ratio disclosed that
                      thermal expansion and hydration decrease by increasing the
                      Mn content as well as the total electrical conductivity. In
                      addition to that, XPS analysis and near edge X-ray
                      absorption fine structure spectra (NEXAFS) in the vicinity
                      of O K-edge and Mn L2,3-edges indicated that the Mn atoms
                      oxidation state in the surface and in the bulk range from
                      Mn2+ to Mn4+ depending on the ambient conditions that can be
                      encountered in MPEC electrodes, which it is suggested to be
                      related with a hydration mechanism mediated by Mn oxidation
                      and subsequent proton attachment to oxygen neighbors,
                      similar to LSM.},
      cin          = {IEK-1},
      ddc          = {530},
      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)16},
      UT           = {WOS:000822940600002},
      doi          = {10.1016/j.ssi.2022.115959},
      url          = {https://juser.fz-juelich.de/record/908321},
}