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@ARTICLE{Sarner:1039760,
      author       = {Sarner, Stephan and Menzler, Norbert H. and Malzbender,
                      Jürgen and Hilger, Martin and Sebold, Doris and Weber,
                      André and Guillon, Olivier},
      title        = {{T}owards a scalable recycling process for ceramics in
                      fuel-electrode-supported solid oxide cells},
      journal      = {Green chemistry},
      volume       = {27},
      number       = {8},
      issn         = {1463-9262},
      address      = {Cambridge},
      publisher    = {RSC},
      reportid     = {FZJ-2025-01788},
      pages        = {2252 - 2262},
      year         = {2025},
      abstract     = {The solid oxide cell (SOC) technology relies on
                      high-performance ceramics containing strategically valuable
                      and critical raw materials. This study focuses on the
                      processing of spent cell materials from
                      fuel-electrode-supported SOCs, demonstrating the feasibility
                      of utilizing a significant portion of the ceramic cell in a
                      closed-loop system. More than 85 $\%$ of the cell's initial
                      mass was directly incorporated into substrate manufacturing.
                      The air-side perovskites were initially separated using
                      hydrochloric acid treatment, followed by mechanical
                      reprocessing of the remaining half cells. The performance of
                      the resulting full cells containing 50 $mass\%$ recycled
                      material in the substrate was evaluated, achieving a current
                      density of up to 1.14 A/cm² at 0.7 V and 750 °C in fuel
                      cell mode, which is comparable to that of non-recycled
                      counterparts. Preliminary experiments for the recovery of
                      leached metal ions from the air electrode were conducted
                      using direct oxalate precipitation while examining pH
                      dependence. Direct oxalate precipitation proved particularly
                      effective in the low pH range for the recovery of a
                      lanthanum oxalate precursor with a purity exceeding 98 $\%.$
                      The results highlight the potential for simple and
                      sustainable practices in SOC technology.},
      cin          = {IMD-2 / JARA-ENERGY},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IMD-2-20101013 / $I:(DE-82)080011_20140620$},
      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)16},
      UT           = {WOS:001408283500001},
      doi          = {10.1039/D4GC05883F},
      url          = {https://juser.fz-juelich.de/record/1039760},
}