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@ARTICLE{Brandner:2218,
author = {Brandner, M. and Bram, M. and Froitzheim, J. and
Buchkremer, H. P. and Stöver, D.},
title = {{E}lectrically {C}onductive {D}iffusion {B}arrier {L}ayers
for {M}etal-{S}upported {SOFC}},
journal = {Solid state ionics},
volume = {179},
issn = {0167-2738},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-2218},
year = {2008},
note = {Record converted from VDB: 12.11.2012},
abstract = {Metal-supported solid oxide fuel cells (SOFCs) are
considered to have a high potential for use in mobile
applications. However, there are still technical problems to
be solved. Especially the interdiffusion of iron, chromium
and nickel between ferritic FeCr substrates and
nickel-containing anodes is known to be a key factor for
rapid cell degradation.The main concern of the present work
was to develop a diffusion barrier layer between a sintered
composite comprising a ferritic FeCr substrate and a Ni/YSZ
anode to avoid interdiffusion during cell fabrication as
well as during electrochemical operation. Model experiments
were carried out with Cr2O3/Cr2MnO4, Ce0.8Gd0.2O2 and CeO2
diffusion barriers. In sintering experiments at 1100 degrees
C for 3 hours in argon atmosphere Ce0.8Gd0.2O2 and CeO2
displayed promising results by completely avoiding any
interdiffusion. Due to the higher electrical conductivity
CeO2 was chosen for the electrochemical cell tests.SOFCs
comprising an FeCr substrate, a CeO2 diffusion barrier layer
and a sintered Ni/YSZ anode were coated with a 9.5YSZ
electrolyte by the vacuum-plasma-spraying technique. The
thickness of the electrolyte was 60 mu m. A LSCF cathode was
then screen printed. At 800 degrees C a power 2 2 density of
430 mW/cm(2) was achieved. No significant voltage drop was
observed during operation for 165 h at 0.3 A/cm(2). (C) 2008
Elsevier B.V All rights reserved.},
keywords = {J (WoSType)},
cin = {IEF-2 / IEF-1 / JARA-ENERGY},
ddc = {530},
cid = {I:(DE-Juel1)VDB810 / I:(DE-Juel1)VDB809 /
$I:(DE-82)080011_20140620$},
pnm = {Rationelle Energieumwandlung / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602)},
pid = {G:(DE-Juel1)FUEK402 / G:(DE-Juel1)SOFC-20140602},
shelfmark = {Chemistry, Physical / Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000259276200050},
doi = {10.1016/j.ssi.2008.03.002},
url = {https://juser.fz-juelich.de/record/2218},
}