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@ARTICLE{SchulzeKppers:154943,
author = {Schulze-Küppers, F. and Baumann, S. and Tietz, F. and
Bouwmeester, H. J. M. and Meulenberg, W. A.},
title = {{T}owards the fabrication of
{L}a0.98−x{S}rx{C}o0.2{F}e0.8{O}3−δ perovskite-type
oxygen transport membranes},
journal = {Journal of the European Ceramic Society},
volume = {34},
number = {15},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2014-04153},
pages = {3741 - 3748},
year = {2014},
abstract = {La0.98-xSrxCo0.2Fe0.8O3-d (LSCF) is a candidate material
for use as an oxygen transport membrane (OTM). In this work,
fabrication-relevant properties (sintering behaviour,
thermal and chemical expansion) of LSCF (x = 0.2, 0.4, 0.6,
0.8) were investigated in order to select the preferred
composition for fabricating a thin-film supported membrane
able to withstand the thermochemical stresses encountered
during manufacturing and operation with simultaneously high
oxygen permeation flux. Partial substitution of La by Sr
ions in LSCF is beneficial for increasing the oxygen
permeation rate, but it causes drawbacks regarding
manufacturing and operation. A Sr content of x ≥ 0.6
results in a swelling of the material during sintering,
which complicates the manufacturing of thin, leak-free
membranes. This swelling is related to oxygen release during
heating, combined with the formation of a liquid phase above
1200 °C. Furthermore, an increase in total strain with Sr
content is observed. This is caused by the chemical
expansion, while there is no significant change in thermal
expansion with increasing Sr content. The compositions x =
0.4 and x = 0.6 showed tolerable expansion coefficients as
well as adequate sintering behaviour and were therefore
selected for the fabrication of thin supported membranes.
These supported membranes with a thickness of 30 µm were
manufactured by sequential tape casting and characterised
regarding microstructure and oxygen flux.},
cin = {IEK-1},
ddc = {660},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {122 - Power Plants (POF2-122) / GREEN-CC - Graded Membranes
for Energy Efficient New Generation Carbon Capture Process
(608524)},
pid = {G:(DE-HGF)POF2-122 / G:(EU-Grant)608524},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000340976200032},
doi = {10.1016/j.jeurceramsoc.2014.06.012},
url = {https://juser.fz-juelich.de/record/154943},
}