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@ARTICLE{Lenser:841408,
      author       = {Lenser, Christian and Gunkel, Felix and Sohn, Yoo Jung and
                      Menzler, Norbert H.},
      title        = {{I}mpact of defect chemistry on cathode performance: {A}
                      case study of {P}r-doped ceria},
      journal      = {Solid state ionics},
      volume       = {314},
      issn         = {0167-2738},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-08483},
      pages        = {204 - 211},
      year         = {2018},
      abstract     = {Pr-doped ceria (PCO) is a mixed ionic-electronic conductor
                      (MIEC) under oxidizing conditions, with excellent ionic and
                      relatively low electronic conductivity. Motivated by
                      investigations of model systems, PCO is examined with
                      regards to the performance as an SOFC air electrode. The
                      conductivity of Pr0.2Ce0.8O2‐δ (20PCO) in air is examined
                      in detail, and a novel technique based on high-temperature
                      X-ray diffraction (HT-XRD) to identify the exact temperature
                      at which half of all Pr-dopants are ionized is presented.
                      The redox-state of the Pr dopants strongly influences the
                      polaron mobility, which can be linked to an increase of the
                      polarization resistance of symmetric cells with 20PCO
                      electrodes, indicating a change of the rate-limiting step
                      for the oxygen reduction reaction (ORR).},
      cin          = {IEK-1 / PGI-7 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)PGI-7-20110106 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000423889100028},
      doi          = {10.1016/j.ssi.2017.09.023},
      url          = {https://juser.fz-juelich.de/record/841408},
}