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@ARTICLE{Lenser:841408,
author = {Lenser, Christian and Gunkel, Felix and Sohn, Yoo Jung and
Menzler, Norbert H.},
title = {{I}mpact of defect chemistry on cathode performance: {A}
case study of {P}r-doped ceria},
journal = {Solid state ionics},
volume = {314},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2017-08483},
pages = {204 - 211},
year = {2018},
abstract = {Pr-doped ceria (PCO) is a mixed ionic-electronic conductor
(MIEC) under oxidizing conditions, with excellent ionic and
relatively low electronic conductivity. Motivated by
investigations of model systems, PCO is examined with
regards to the performance as an SOFC air electrode. The
conductivity of Pr0.2Ce0.8O2‐δ (20PCO) in air is examined
in detail, and a novel technique based on high-temperature
X-ray diffraction (HT-XRD) to identify the exact temperature
at which half of all Pr-dopants are ionized is presented.
The redox-state of the Pr dopants strongly influences the
polaron mobility, which can be linked to an increase of the
polarization resistance of symmetric cells with 20PCO
electrodes, indicating a change of the rate-limiting step
for the oxygen reduction reaction (ORR).},
cin = {IEK-1 / PGI-7 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)PGI-7-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {524 - Controlling Collective States (POF3-524)},
pid = {G:(DE-HGF)POF3-524},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000423889100028},
doi = {10.1016/j.ssi.2017.09.023},
url = {https://juser.fz-juelich.de/record/841408},
}