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@ARTICLE{VanGestel:255480,
author = {Van Gestel, Tim and Sebold, Doris and Buchkremer, Hans
Peter},
title = {{P}rocessing of 8{YSZ} and {CGO} thin film electrolyte
layers for intermediate- and low-temperature {SOFC}s},
journal = {Journal of the European Ceramic Society},
volume = {35},
number = {5},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2015-05642},
pages = {1505 - 1515},
year = {2015},
abstract = {An extensive experimental investigation has been carried
out in order to prepare novel thin film electrolytes for
enhanced SOFCs. Methods of producing ultra-thin 8 $mol\%$
Y2O3-doped ZrO2 (8YSZ) electrolytes (<1 μm) and thin 10
$mol\%$ Gd2O3-doped CeO2 (10CGO) electrolytes (∼1 μm) are
presented. The method deposits such thin dense films onto a
highly porous anode substrate. As opposed to conventional
powder deposition techniques, the method involves depositing
a dispersion of nanoparticles to achieve a thin-film
mesoporous layer. After sintering at 1400 °C, the deposited
mesoporous layer becomes a dense thin film with a thickness
of ∼1 μm or even thinner. Such thicknesses are
significantly below the limit currently achievable with
powder deposition techniques (∼10 μm). The electrolyte
layer thickness is comparable to the thicknesses found in
micro-SOFCs, but here conventional macroporous SOFC
substrates are used. Of considerable importance is the use
of a spin-coating process, due to its simplicity and the
potential ease of further scaling-up. Results from SEM and
leakage tests confirmed that the thin-film electrolytes are
homogeneous and have a low number of defects after sintering
at 1400 °C. The average leak rate for air was 1–2 ×
10−5 mbar l s−1 cm−2 for the 8YSZ electrolyte and
10−4 mbar l s−1 cm−2 for the 10CGO electrolyte.},
cin = {IEK-1},
ddc = {660},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000348686200017},
doi = {10.1016/j.jeurceramsoc.2014.11.017},
url = {https://juser.fz-juelich.de/record/255480},
}