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@ARTICLE{Knigshofer:943422,
      author       = {Königshofer, Benjamin and Höber, Michael and Menzler,
                      Norbert H. and Schröttner, Hartmuth and Hochenauer,
                      Christoph and Subotić, Vanja},
      title        = {{E}xperimental investigation of segmented {SOEC}s:
                      {L}ocally-resolved impedance and degradation
                      characteristics},
      journal      = {International journal of hydrogen energy},
      volume       = {48},
      number       = {10},
      issn         = {0360-3199},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2023-01007},
      pages        = {3740 - 3758},
      year         = {2023},
      abstract     = {Abstract High temperature solid oxide electrolysis cells
                      (SOEC) provide an innovative solution for direct conversion
                      of steam and electricity to hydrogen with the addi- tional
                      capability of adding CO2 to produce syngas. However,
                      specific operating conditions can have a negative impact on
                      the performance and lifetime of SOECs. In this context, the
                      distributions of operational parameters such as gas species,
                      temperature and current density within the cell structure
                      influence local transport processes and reaction kinetics
                      and can lead to locally different electrochemical potentials
                      and thus degradation phenomena. This study focuses on
                      experimental investigations of steam-electrode supported
                      SOECs with segmented air electrodes with the main objective
                      to measure EIS and thus identify locally-resolved impedance
                      and degradation characteristics caused by different
                      operating conditions in steam and co-electrolysis mode.
                      Thereby, significant correlations between operating condi-
                      tions, local effects, electrode processes and degradation
                      mechanisms were observed and analyzed in detail using
                      EIS,DRT and SEM.Keywords:Solid Oxide Electrolysis Cell
                      (SOEC), Segmented, Locally-resolved, Electrochemical
                      Analayis, Distribution of Relaxation Times (DRT},
      cin          = {IEK-1},
      ddc          = {620},
      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:000923729200001},
      doi          = {10.1016/j.ijhydene.2022.10.265},
      url          = {https://juser.fz-juelich.de/record/943422},
}