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@ARTICLE{Riedel:889968,
      author       = {Riedel, M. and Heddrich, M. P. and Ansar, A. and Fang, Q.
                      and Blum, Ludger and Friedrich, K. A.},
      title        = {{P}ressurized operation of solid oxide electrolysis stacks:
                      {A}n experimental comparison of the performance of 10-layer
                      stacks with fuel electrode and electrolyte supported cell
                      concepts},
      journal      = {Journal of power sources},
      volume       = {475},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2021-00571},
      pages        = {228682 -},
      year         = {2020},
      abstract     = {The electrochemical behavior of two different types of
                      planar 10-layer solid oxide cell (SOC) stacks with having
                      either fuel electrode supported cells or electrolyte
                      supported cells, are examined under steam, co- and CO2
                      electrolysis at elevated pressures of up to 8 bar.
                      Experiments with steady-state and dynamically recorded
                      U(i)-characteristics are performed in order to evaluate the
                      performances over a wide temperature range and for different
                      operating conditions. Furthermore, the influence of the
                      operating pressure is quantified via the temperature and
                      pressure dependency of the related ASR values of each stack.
                      Impedance analysis is conducted in order to investigate the
                      major differences and the pressure effect on the specific
                      process resistances during steam and CO2 electrolysis.In
                      case of the stack with fuel electrode supported cells, the
                      ASR is found to decrease significantly at elevated pressure
                      leading to an overall performance gain, whereas the stack
                      with electrolyte supported cells shows a minor pressure
                      effect. An impedance study shows that the diffusion and
                      activation resistances are significantly affected when
                      conducting CO2 instead of H2O electrolysis for both stack
                      concepts. Furthermore, the pressure sensitivity is found to
                      be more dominant during CO2 electrolysis than during pure
                      steam electrolysis operation.},
      cin          = {IEK-14},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-14-20191129},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000573641500001},
      doi          = {10.1016/j.jpowsour.2020.228682},
      url          = {https://juser.fz-juelich.de/record/889968},
}