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@INPROCEEDINGS{Sarner:1030408,
      author       = {Sarner, Stephan and Menzler, Norbert H. and Guillon,
                      Olivier},
      title        = {{C}losing the {L}oop:{A}dvancing {S}olid {O}xide {C}ell
                      {C}eramics in the {C}ircular {E}conomy},
      reportid     = {FZJ-2024-05281},
      year         = {2024},
      abstract     = {The adoption of fuel cell and hydrogen technologies will
                      play a crucial role in facilitating the shift towards
                      decarbonization and meeting the EU's goal of achieving zero
                      net greenhouse gas emissions by 2050. In the coming years,
                      particular emphasis will be placed on expanding the
                      deployment of suitable hydrogen electrolyzers, such as solid
                      oxide electrolysis cells (SOECs), which currently have a
                      moderate technology readiness level (TRL 5-7). To support
                      market entry and promote resource recovery, early-stage
                      development and implementation of recycling strategies are
                      imperative. Efforts are underway to address the reuse and
                      recovery of components from high-temperature electrolyzers,
                      focusing on the reprocessing of ceramic components from
                      End-of-Life solid oxide cells (SOCs). Establishing
                      closed-loop recycling processes is highly desirable, with a
                      focus on scalability. In line with this objective, a
                      recovery route has been devised for the well-established
                      fuel electrode-supported cell design. The primary goal is to
                      reprocess more than $80\%$ of the cell material into new
                      substrate, directly applicable in the SOC device. Therefore,
                      a prerequisite step involves the separation of the oxygen
                      electrode and any potential contact layer, which can be
                      achieved through mechanical and/or hydrometallurgical
                      approaches. Subsequently, the sintered bodies undergo
                      reprocessing into ceramic powder, substrate slurry, and
                      ultimately the pre-sintered substrate. Components of the
                      separated oxygen electrode are recovered as precursors,
                      suitable for SOC applications (e.g., manufacturing oxygen
                      electrodes or contact layers) or alternative uses.In
                      addition to presenting the properties of the recycled
                      substrate, full cells were manufactured based on substrates
                      containing $0\%,$ $25\%,$ and $50\%$ recyclate by weight.
                      Electrochemical tests were conducted to determine whether
                      these substrates meet the functional requirements, including
                      gas distribution, electrical conductivity, and mechanical
                      stability.},
      month         = {Aug},
      date          = {2024-08-19},
      organization  = {14th International Conference on
                       Ceramic Materials and Components for
                       Energy and Environmental Systems,
                       Budapest (Hungary), 19 Aug 2024 - 22
                       Aug 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/1030408},
}