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@ARTICLE{Zhang:866569,
author = {Zhang, Jun and Lenser, Christian and Menzler, Norbert H.
and Guillon, Olivier},
title = {{C}omparison of solid oxide fuel cell ({SOFC}) electrolyte
materials for operation at 500 °{C}},
journal = {Solid state ionics},
volume = {344},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2019-05652},
pages = {115138 -},
year = {2020},
abstract = {Solid oxide fuel cells (SOFCs) operating at low temperature
(~500 °C) enable new fields of application, such as
auxiliary power units (APUs) or power generation for mobile
applications. However, the state-of-the-art electrolyte
material currently used in intermediate-temperature SOFCs
(yttria-stabilized zirconia (YSZ)) does not provide
sufficiently high ionic conductivity for low temperature
applications. When looking for alternatives, the
conductivity values for each material found in widely cited
literature can be confusing, as the reported values are
sometimes in conflict with each other. Therefore, we present
a systematic comparison of the conductivity of the three
most popular, commercially available electrolyte materials,
i.e., YSZ, scandia-stabilized zirconia (ScSZ), and
gadolinium-doped ceria (GDC). By using electrochemical
impedance spectroscopy (EIS) to characterize the ionic
conductivities, we find that at 500 °C, GDC has a higher
ionic conductivity (5.8 × 10−3 S cm−1) than
ScSZ (2.5 × 10−3 S cm−1) and YSZ
(1.1 × 10−3 S cm−1). The properties of the
starting powders, powder processing and the microstructure
after sintering were considered. This conductivity
comparison can be used as a guide when deciding on
electrolyte materials for different SOFC applications,
especially when the fabrication of different thickness of
the electrolyte layer has to be considered and rectify
misleading information in the literature.},
cin = {IEK-1},
ddc = {530},
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:000509787200011},
doi = {10.1016/j.ssi.2019.115138},
url = {https://juser.fz-juelich.de/record/866569},
}