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@ARTICLE{Opitz:866370,
author = {Opitz, A. K. and Gerstl, M. and Bram, M.},
title = {{M}odel {S}ystem {S}upported {I}mpedance {S}imulation of
{C}omposite {E}lectrodes},
journal = {Fuel cells},
volume = {19},
number = {4},
issn = {1615-6854},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2019-05526},
pages = {417 - 428},
year = {2019},
abstract = {Current research on fuel electrodes of solid oxide cells
(SOCs) is done either on model‐type pattern electrodes or
by interpretation of impedance spectra measured on
“real” porous paste electrodes. However, results
obtained by both methods are not always straightforward to
compare. To bridge this gap, in this study impedance spectra
of 3D porous composite electrodes with a well‐defined
geometry are simulated using elementary parameters from
model‐type experiments. By independent variation of these
elementary parameters, it is possible to analyze the
influence of the individual elementary processes on the
overall electrode performance without the issue of changing
its microstructure, which usually occurs when changing
materials in case of real porous electrodes. The obtained
results identify the electrochemical reaction resistance as
the parameter with the highest impact on the polarization
resistance of porous electrodes. This study thus provides a
basis for a knowledge‐based improvement of existing and
novel composite fuel electrodes.},
cin = {IEK-1},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {135 - Fuel Cells (POF3-135)},
pid = {G:(DE-HGF)POF3-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000476070000001},
doi = {10.1002/fuce.201800198},
url = {https://juser.fz-juelich.de/record/866370},
}