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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},
}