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@ARTICLE{Suboti:878313,
author = {Subotić, Vanja and Menzler, Norbert H. and Lawlor, Vincent
and Fang, Qingping and Pofahl, Stefan and Harter, Philipp
and Schroettner, Hartmuth and Hochenauer, Christoph},
title = {{O}n the origin of degradation in fuel cells and its fast
identification by applying unconventional online-monitoring
tools},
journal = {Applied energy},
volume = {277},
issn = {0306-2619},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-02771},
pages = {115603 -},
year = {2020},
abstract = {The key advantage of solid oxide fuel cells (SOFC) – high
fuel flexibility – still remains the main challenge
disturbing their stability, reliability and durability.
Specific operating conditions induce and accelerate various
degradation mechanisms and reduce the overall fuel cell
lifetime. Identifying and predicting the onset of
degradation at the preliminary stage is of crucial
importance, in order to provoke appropriate countermeasures
and to prolong the service time of the fuel cell technology.
This is not possible when using available conventional
monitoring tools. When employing appropriate
online-monitoring tools the principle of which differs from
the most common measurement of a linear stationary system,
relevant information about the occurring failure modes can
be obtained. An example for it is a total harmonic
distortion (THD) tool, which is based on identification of
the system non-linearity and its alternation from the stable
state. Taking this into account, this study moves from the
traditional concepts and we show that: (i) non-conventional
methodologies can be used to identify relevant failure modes
at their preliminary stage, (ii) it is possible to
in-operando differentiate individual degradation mechanisms,
and (iii) advanced unconventional online-monitoring tools
are time-efficient and required measuring time can be
reduced by factor up to 20.},
cin = {IEK-1 / IEK-14},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-14-20191129},
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:000579393800075},
doi = {10.1016/j.apenergy.2020.115603},
url = {https://juser.fz-juelich.de/record/878313},
}