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@ARTICLE{Malzbender:20848,
author = {Malzbender, J. and Batfalsky, P. and Vaßen, R. and Shemet,
V. and Tietz, F.},
title = {{C}omponent {I}nteractions {A}fter {L}ong-{T}erm
{O}peration of an {SOFC} {S}tack {W}ith {LSM} {C}athode},
journal = {Journal of power sources},
volume = {201},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {PreJuSER-20848},
pages = {196 - 203},
year = {2012},
note = {Record converted from VDB: 12.11.2012},
abstract = {The reliable long-term operation of stacks with a low
degradation rate is a prerequisite for the commercialization
of solid oxide fuel cell (SOFC) technology. A detailed
post-test analysis of stacks is of major importance in
understanding degradation mechanisms. Here the results are
reported of a post-test analysis of an SOFC stack with anode
supported cells with Ni/YSZ anode, 8YSZ electrolyte, and a
lanthanum strontium manganite (LSM) cathode operated under
steady-state conditions for 19,000h. In particular, the
microstructural and chemical analyses of the relevant
metallic and ceramic components are reported. The
interconnects were coated with a (Mn,Co,Fe)(3) O-4 spinel by
atmospheric plasma spraying, which prevented Cr evaporating
into the cathode compartment. The diffusion of Mn from the
(La,Sr)MnO3 cathode into the 8YSZ electrolyte led to local
enrichment at grain boundaries, which might have been
responsible for the degradation via electronic pathways
leading to partial short-circuiting across the electrolyte.
However, the ultimate failure of the stack was the result of
a weakening and fracture of the 8YSZ electrolyte along grain
boundaries due to the local Mn enrichment. (C) 2011 Elsevier
B.V. All rights reserved.},
keywords = {J (WoSType)},
cin = {IEK-2 / IEK-1 / ZAT},
ddc = {620},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-1-20101013 /
I:(DE-Juel1)ZAT-20090406},
pnm = {Rationelle Energieumwandlung / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602)},
pid = {G:(DE-Juel1)FUEK402 / G:(DE-Juel1)SOFC-20140602},
shelfmark = {Electrochemistry / Energy $\&$ Fuels},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000300264400027},
doi = {10.1016/j.jpowsour.2011.10.117},
url = {https://juser.fz-juelich.de/record/20848},
}