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@ARTICLE{Liu:851717,
author = {Liu, Yang and Baumann, Stefan and Schulze-Küppers, Falk
and Müller, David and Guillon, Olivier},
title = {{C}o and {F}e co-doping influence on functional properties
of {S}r{T}i{O}3 for use as oxygen transport membranes},
journal = {Journal of the European Ceramic Society},
volume = {38},
number = {15},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-05249},
pages = {5058 - 5066},
year = {2018},
abstract = {Perovskite-structured powders of SrTi1-xCoxO3-δ (STC-x)
with nominal stoichiometry of x = 0–0.75 as well as
SrTi0.75Co0.25-yFeyO3-δ (STCF-y) where y = 0–0.25
were synthesized using the Pechini method. Thermal/chemical
expansion behaviour, total electrical conductivities, and
oxygen permeation rates were investigated. The substitution
of Ti with Co leads to an increase in both electronic and
ionic conductivities and, therefore, oxygen permeability.
Thermal and chemical expansions also increase slightly. The
optimum Co content was found to be $25–35\%$ due to the
trade-off between phase stability and permeability. The
oxygen permeation rate of STC35 is comparable to that of
state-of-the-art (La,Sr)(Co,Fe)O3-δ, whereas the expansion
coefficients are lower. Co-doping in STCF-y did not produce
any significant differences in oxygen permeability at both
high temperature and sample thickness (1.0 mm), i.e. in a
solid-state diffusion-limited regime. At lower temperatures
(<800 °C), STC25 exhibits higher permeability than STF25
due to the higher catalytic activity of Co compared to Fe.},
cin = {IEK-1 / PGI-6 / JARA-ENERGY},
ddc = {660},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)PGI-6-20110106 /
$I:(DE-82)080011_20140620$},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000444664300030},
doi = {10.1016/j.jeurceramsoc.2018.07.037},
url = {https://juser.fz-juelich.de/record/851717},
}