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@ARTICLE{Gerstl:811773,
author = {Gerstl, Matthias and Nenning, Andreas and Iskandar, Riza
and Rojek-Wöckner, Veronika and Bram, Martin and Hutter,
Herbert and Opitz, Alexander Karl},
title = {{T}he {S}ulphur {P}oisoning {B}ehaviour of {G}adolinia
{D}oped {C}eria {M}odel {S}ystems in {R}educing
{A}tmospheres},
journal = {Materials},
volume = {9},
number = {8},
issn = {1996-1944},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2016-04128},
pages = {649},
year = {2016},
abstract = {An array of analytical methods including surface area
determination by gas adsorption using the Brunauer, Emmett,
Teller (BET) method, combustion analysis, XRD, ToF-SIMS, TEM
and impedance spectroscopy has been used to investigate the
interaction of gadolinia doped ceria (GDC) with hydrogen
sulphide containing reducing atmospheres. It is shown that
sulphur is incorporated into the GDC bulk and might lead to
phase changes. Additionally, high concentrations of silicon
are found on the surface of model composite microelectrodes.
Based on these data, a model is proposed to explain the
multi-facetted electrochemical degradation behaviour
encountered during long term electrochemical measurements.
While electrochemical bulk properties of GDC stay largely
unaffected, the surface polarisation resistance is
dramatically changed, due to silicon segregation and
reaction with adsorbed sulphur.},
cin = {IEK-1},
ddc = {600},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {135 - Fuel Cells (POF3-135) / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602)},
pid = {G:(DE-HGF)POF3-135 / G:(DE-Juel1)SOFC-20140602},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000380762000040},
pubmed = {pmid:28773771},
doi = {10.3390/ma9080649},
url = {https://juser.fz-juelich.de/record/811773},
}