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@ARTICLE{Vibhu:908849,
      author       = {Vibhu, Vaibhav and Vinke, Izaak C. and Zaravelis, Fotios
                      and Neophytides, Stylianos G. and Niakolas, Dimitrios K. and
                      Eichel, Rüdiger-A. and de Haart, L. G. J.},
      title        = {{P}erformance and {D}egradation of
                      {E}lectrolyte-{S}upported {S}ingle {C}ell {C}omposed of
                      {M}o-{A}u-{N}i/{GDC} {F}uel {E}lectrode and {LSCF} {O}xygen
                      {E}lectrode during {H}igh {T}emperature {S}team
                      {E}lectrolysis},
      journal      = {Energies},
      volume       = {15},
      number       = {8},
      issn         = {1996-1073},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2022-02872},
      pages        = {2726 -},
      year         = {2022},
      abstract     = {Ni-gadolinia-doped ceria (GDC) based electrode materials
                      have drawn significant attention as an alternative fuel
                      electrode for solid oxide cells (SOCs) owing to mixed ionic
                      conductivity of GDC and high electronic and catalytic
                      activity of Ni. Moreover, the catalytic activity and
                      electrochemical performance of the Ni-GDC electrode can be
                      further improved by dispersing small quantities of other
                      metal additives, such as gold or molybdenum. Therefore,
                      herein, we considered gold and molybdenum modified Ni-GDC
                      electrodes and focused on the upscaling; hence, we prepared
                      5 × 5 cm2 electrolyte-supported single cells. Their
                      electrochemical performance was investigated at different
                      temperatures and fuel gas compositions. The long-term steam
                      electrolysis test, up to 1700 h, was performed at 900 °C
                      with −0.3 A·cm−2 current load. Lastly, post-test
                      analyses of measured cells were carried out to investigate
                      their degradation mechanisms. Sr-segregation and cobalt
                      oxide formation towards the oxygen electrode side, and
                      Ni-particle coarsening and depletion away from the
                      electrolyte towards the fuel electrode side, were observed,
                      and can be considered as a main reason for the degradation.
                      Thus, modification of Ni/GDC with Au and Mo seems to
                      significantly improve the electro-catalytic activity of the
                      electrode; however, it does not significantly mitigate the
                      Ni-migration phenomenon after prolonged operation},
      cin          = {IEK-9},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1232},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000786743900001},
      doi          = {10.3390/en15082726},
      url          = {https://juser.fz-juelich.de/record/908849},
}