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@ARTICLE{Matte:866781,
author = {Matte, Eric and Holzlechner, Gerald and Epple, Lars and
Stolten, Detlef and Lupetin, Piero},
title = {{I}mpact of silicate substrate and cosintering on cathode
performance in an inert substrate-supported solid oxide fuel
cell},
journal = {Journal of power sources},
volume = {413},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-05847},
pages = {334 - 343},
year = {2019},
abstract = {In this study, cathode performance of cost-effective inert
substrate-supported solid oxide fuel cells fabricated by a
single step cosintering process is investigated. The
polarization resistance of cosintered inert
substrate-supported cathode symmetrical cells (ISC) is
compared with the polarization resistance of
electrolyte-supported symmetrical cells (ESC) prepared by
post- and cosintering. ESC prepared by cosintering have
similar polarization resistance than ESC prepared by
post-firing due to the addition of pore formers. However,
the implementation of a porous inert substrate increases the
polarization resistance. Analysis of electrochemical
impedance spectra could exclude a gas-phase diffusion
limitation due to the porous substrate. Time-of-Flight
secondary ion mass spectrometry (ToF-SIMS) reveals an
accumulation of zinc, magnesium and silicon on the inner
pore surface of the cathode layer. Thermodynamic
calculations confirm desorption of these elements from the
silicate substrate during the cosintering. In addition, a
zinc manganite spinel is detected in the cathode layer via
confocal Raman spectroscopy, which indicates a reaction
between the cathode material and zinc. The larger cathode
polarization resistance of the inert substrate-supported
cell is attributed to microstructural changes and the
coverage of the cathode surface.},
cin = {IEK-3},
ddc = {620},
cid = {I:(DE-Juel1)IEK-3-20101013},
pnm = {135 - Fuel Cells (POF3-135)},
pid = {G:(DE-HGF)POF3-135},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000457512700038},
doi = {10.1016/j.jpowsour.2018.12.025},
url = {https://juser.fz-juelich.de/record/866781},
}