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@INPROCEEDINGS{Tietz:171909,
author = {Tietz, Frank and Al Daroukh, M. and Schefold, J. and
Brisse, A. and The, D. N. M. and Schroeder, M.},
title = {{I}nvestigations on a solid oxide cell after 6100 h
operation in electrolysis mode},
reportid = {FZJ-2014-05465},
year = {2014},
abstract = {An electrode-supported solid oxide electrolysis cell (SOEC)
was operated for 6100 h with a current density of -0.75
A/cm2 at a temperature of 780 °C indicating high stability
and low voltage increase of 11 mV/kh. The cell consisted of
a 10 µm thick solid electrolyte (yttria-stabilised
zirconia, YSZ) and a diffusion barrier layer of gadolinium-
substituted ceria, a Ni/YSZ cermet as hydrogen electrode and
as mechanical support, and a La0.58Sr0.4Co0.2Fe0.8O3
perovskite as oxygen electrode. The electrodes as well as
the YSZ and CGO layers were deposited on the electrode
support by screen printing. Metallographic post-test
analyses showed no significant changes in microstructure
compared to the initial state. Investigations by means of
scanning electron microscopy, transmission electron
microscopy, energy dispersive X-ray spectroscopy indicate
material transport from the electrolyte into the diffusion
barrier layer and pore formation at the hydrogen electrode
/electrolyte interface.},
month = {Mar},
date = {2014-03-12},
organization = {European Hydrogen Energy Conference
2014, Sevilla (Spain), 12 Mar 2014 - 14
Mar 2014},
cin = {IEK-1},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {123 - Fuel Cells (POF2-123)},
pid = {G:(DE-HGF)POF2-123},
typ = {PUB:(DE-HGF)1},
url = {https://juser.fz-juelich.de/record/171909},
}