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@ARTICLE{Liu:865071,
author = {Liu, Yang and Motalov, Vladimir and Baumann, Stefan and
Sergeev, Dmitry and Müller, Michael and Sohn, Yoo Jung and
Guillon, Olivier},
title = {{T}hermochemical stability of {F}e- and {C}o-functionalized
perovskite-type {S}r{T}i{O}3 oxygen transport membrane
materials in syngas conditions},
journal = {Journal of the European Ceramic Society},
volume = {39},
number = {15},
issn = {0955-2219},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2019-04633},
pages = {4874 - 4881},
year = {2019},
abstract = {The materials typically used for oxygen transport
membranes, Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) and
La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) tend to decompose due to their
low thermochemical stability under reducing atmosphere. Fe-
and Co-doped SrTiO3 (SrTi1-x-yCoxFeyO3-δ, x + y ≤
0.35) (STCF) materials showing an oxygen transport
comparable to LSCF have great potential for application in
ion-transport-devices. In this study, the thermochemical
stability of pure perovskite-structured STCF was
investigated after annealing in a syngas atmosphere at
600–900 °C. The phase composition of the materials
after annealing was characterized by means of X-ray
diffraction (XRD). The thermodynamic activities of SrO, FeO,
and CoO in the STCF materials were evaluated using Knudsen
effusion mass spectrometry (KEMS). Co-doped SrTiO3 (STC)
materials were not stable after annealing in the syngas
atmosphere above $5 mol\%$ Co-substitution.
Ruddlesden-Popper-like phases and SrCO3 were detected after
annealing at 600 °C. In contrast, Fe substitution (STF)
showed good stability after annealing in syngas upto
$35 mol\%$ substitution.},
cin = {IEK-1 / JARA-ENERGY / IEK-2},
ddc = {660},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$ /
I:(DE-Juel1)IEK-2-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000487569500048},
doi = {10.1016/j.jeurceramsoc.2019.06.045},
url = {https://juser.fz-juelich.de/record/865071},
}