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@ARTICLE{Kournoutis:18154,
author = {Kournoutis, V.Ch. and Tietz, F. and Bebelis, S.},
title = {{C}yclic voltammetry characterization of a
{L}a(0.8){S}r(0.2){C}o(0.2){F}e(0.8){O}(3) (-) (delta)
electrode interfaced to {CGO}/{YSZ}},
journal = {Solid state ionics},
volume = {197},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-18154},
pages = {13 - 17},
year = {2011},
note = {The authors gratefully acknowledge financial support by the
Integrated Project "Real-SOFC" (SES6-CT-2003-502612). They
also thank Dr A. Mai, Forschungszentrum Julich (IEF-1),
Germany and Dr N. Kotsionopoulos, Department of Chemical
Engineering, University of Patras, Greece for the
preparation of the perovskite electrode as well as Dr V.
Drakopoulos, FORTH/ICE-HT, Greece for the SEM
characterization of the electrode.},
abstract = {The electrochemical characteristics of a
La0.8Sr0.2Co0.2Fe0.8O3 (- delta) cathode electrode
interfaced to the CGO layer of a double layer CGO/YSZ
electrolyte were studied using cyclic voltammetry, at
temperatures of 600 to 850 degrees C and under oxygen
partial pressures ranging from 0.07 to 21 kPa. The aim was
to identify the electrochemical processes taking place under
cathodic polarization on the basis of differences in the
features of the cyclic voltammograms with changing
conditions. Depending on temperature, sweep rate and oxygen
partial pressure, current peaks appeared both in the forward
and backward scans. Furthermore, reversed hysteresis was
observed, i.e. higher currents in the backward scan than in
the forward scan, with increasing oxygen partial pressure
and decreasing temperature. The observed behavior was
related to the electrochemical redox of B-sites and
concomitant stoichiometry change as well as to the competing
reaction of electrochemical oxygen redox, taking also into
account the competitive action of chemical reactions
occurring in the presence of gaseous oxygen. (C) 2011
Elsevier B.V. All rights reserved.},
keywords = {J (WoSType)},
cin = {IEK-1},
ddc = {530},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {Rationelle Energieumwandlung},
pid = {G:(DE-Juel1)FUEK402},
shelfmark = {Chemistry, Physical / Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000295572000002},
doi = {10.1016/j.ssi.2011.06.007},
url = {https://juser.fz-juelich.de/record/18154},
}