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@INPROCEEDINGS{Korneychuk:1028748,
      author       = {Korneychuk, S. and Grosselindemann, C. and Schäfer,
                      Laura-Alena and Ivanova, Mariya and Menzler, Norbert H. and
                      Weber, A. and Pundt, A.},
      title        = {{I}n-situ {TEM} reduction of a solid oxide cell with
                      {N}i{O}/{YSZ} and {N}i{O}/{BZCY} materials for fuel
                      electrode},
      reportid     = {FZJ-2024-04796},
      year         = {2024},
      abstract     = {Increasing the durability of solid oxide cells is one of
                      the main goals for achievingwider industrial application.
                      The quality of the electrode plays a major role in
                      theperformance and durability of a fuel and electrolysis
                      cells. Ni/YSZ or Ni/BZCY (BZCY staysfor the state-of-the-art
                      proton conducting ceramic material BaZr1-x(Ce,Y)xO3-d)
                      electrodes ofsolid oxide cells are commonly reduced from
                      NiO/YSZ or NiO/BZCY under hydrogenatmosphere at high
                      temperatures, prior to operation. It is known from
                      commissioning thate.g. reduction temperature and H2 pressure
                      influence the initial performance of the fuelelectrode by
                      governing Ni particle size and shape.With in-situ TEM we are
                      able to observe the reduction of NiO in real time
                      whileexposing the sample to hydrogen gas and heat [28]. We
                      studied the electrode reduction atthe H2 pressures up to 1
                      atmosphere and temperatures 200-850 °C. Grain boundaries
                      andtriple junctions between NiO and YSZ or BZCY are
                      determined as the starting points of thereduction process at
                      lower temperatures. We also showed that the initial
                      temperature ofthe reduction is crucial to achieve a high
                      number of electrochemically active triple phaseboundaries
                      between e.g. Ni/YSZ and gas. In-situ results go in good
                      agreement with ex-situresults obtained from a bulk cell
                      reduced in a test bench.},
      month         = {Jul},
      date          = {2024-07-02},
      organization  = {16th European SOFC $\&$ SOE Forum,
                       Lucerne (Switzerland), 2 Jul 2024 - 5
                       Jul 2024},
      subtyp        = {After Call},
      cin          = {IMD-2},
      cid          = {I:(DE-Juel1)IMD-2-20101013},
      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)6},
      url          = {https://juser.fz-juelich.de/record/1028748},
}