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@ARTICLE{Zeng:1034923,
      author       = {Zeng, Yuan and Kindelmann, Moritz and Kwati, Leonard and
                      Laura, Schaefer and Yao, Kai and Malzbender, Jürgen and
                      Müller, Michael and Guillon, Olivier and Ivanova, Mariya
                      and Menzler, Norbert H.},
      title        = {{C}haracterization of high {Z}r/{C}e ratio
                      {B}a({Z}r,{C}e,{Y}){O}3−δ proton conductors:
                      investigating the impact of {Y} on the properties of
                      materials},
      journal      = {Physical chemistry, chemical physics},
      volume       = {27},
      issn         = {1463-9076},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2025-00037},
      pages        = {885-896},
      year         = {2025},
      abstract     = {Acceptor-substituted Ba(Zr,Ce)O3 proton conducting oxides
                      have attracted significant attention due to their excellent
                      proton conductivity at intermediate temperatures (400–600
                      °C). A high Zr/Ce ratio is crucial for maintaining
                      stability in humid or other harsh atmospheres. Herein, a
                      systematic study was conducted on the phase composition,
                      microstructure, and the resulting hydration ability and
                      electrochemical performance of high Zr/Ce ratio Ba(Zr,Ce)O3
                      solid solutions with different Y substitution levels (10
                      $at\%$ to 30 $at\%).$ In this substitution range, no
                      apparent secondary phase can be found from XRD, leading to a
                      continuous increase in hydration content. A Y-rich phase was
                      observed in SEM for compositions with high levels of Y
                      substitution. The impact of Y on proton conduction was
                      examined using EIS, with particular attention on elucidating
                      the effects of varying amounts of Y on bulk proton
                      conduction. The increase of proton conductivity was
                      primarily due to the increased charge carrier (proton)
                      concentration caused by Y substitution. Different
                      concentrations of Y have little effect on proton mobility,
                      indicating a compromise between different mechanisms such as
                      the Y trapping effect and the nano-percolation effect. Grain
                      boundary proton conduction was discussed combining the
                      TEM-EDS results to explain the space charge layer effect.
                      Mechanical properties and thermo-chemical stability were
                      also considered to pave the way for real applications.},
      cin          = {IMD-2 / JARA-ENERGY},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IMD-2-20101013 / $I:(DE-82)080011_20140620$},
      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},
      pubmed       = {39661081},
      UT           = {WOS:001374199200001},
      doi          = {10.1039/D4CP04384G},
      url          = {https://juser.fz-juelich.de/record/1034923},
}