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@INPROCEEDINGS{Leonard:908327,
      author       = {Leonard, Kwati and Ivanova, Mariya and Deibert, Wendelin
                      and Meulenberg, Wilhelm Albert and Ishihara, Tatsumi and
                      Matsumoto, Hiroshige},
      title        = {{P}rocessing yttrium-doped barium zirconate cerate for
                      energy-efficient electrochemical devices},
      reportid     = {FZJ-2022-02546},
      year         = {2022},
      abstract     = {Acceptor doped barium zirconate-cerate ceramic electrolytes
                      constitute prospective materials for highly-efficient
                      electrochemical devices. This class of materials is
                      particularly suitable because of their much higher mobility
                      of protons within the intermediate temperature range. On the
                      lab scale, devices with these materials have made
                      significant progress in recent years. Ranging from newly
                      developed, high-conducting electrolytes and precisely
                      adjusted air electrode designs, providing a path for further
                      performance improvement at moderate temperatures, thus
                      transforming the way we convert and store energy. Despite
                      this progress, hurdles remain in scaling-up robust and
                      affordable planar-type devices for commercialization. This
                      paper addresses these hurdles by employing a cost-effective
                      inverse tape casting route and screen printing to fabricate
                      flat planar protonic electrochemical devices. The processing
                      parameters were analyzed and adjusted to obtain defect-free
                      half-cells of 5 cm x 5 cm dimensions with diminished
                      warping. Furthermore, including a NiO-SrZr0.5Ce0.4Y0.1O3-d
                      substrate layer yields a easily sintered electrolyte layer
                      after co-sintering at 1350 oC/5h. Typical single-cell
                      operated in electrolysis mode reached reproducible terminal
                      voltages of 1.2 V @ 500 $mA/cm^2$ at 600 oC. Based on the
                      above results, the calculated amount of electricity to
                      produce 1 $Nm^3$ of H2 is about 3.5kWh1, which is at least
                      $30\%$ reduced from the conventional low-temperature water
                      electrolysis. Finally, in the fuel cell mode, the impedance
                      spectra were deconvoluted to identify all
                      performance-related polarization processes via the
                      distribution of relaxation time.},
      month         = {Jun},
      date          = {2022-06-08},
      organization  = {6th International Workshop Prospects
                       on Proton Ceramic Cells, Dijon
                       (France), 8 Jun 2022 - 10 Jun 2022},
      subtyp        = {After Call},
      cin          = {IEK-1},
      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)6},
      url          = {https://juser.fz-juelich.de/record/908327},
}