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@INPROCEEDINGS{Menzler:894913,
author = {Menzler, Norbert H. and Lenser, Christian and Bram, Martin
and Naumenko, Dmitry and Zurek, Joanna and Margaritis,
Nikolaos and Gross-Barsnick, Sonja-Michaela and de Haart,
L.G.J. and Fang, Qingping},
title = {{S}olid oxide cells – {M}aterials status and their
operational behavior},
reportid = {FZJ-2021-03475},
year = {2021},
abstract = {Solid oxide fuel and electrolyzer cells (SOCs) are one
technology to enable a carbon-free future with respect to
the generation of electricity (SOFC) or the use of renewable
electricity for the production of hydrogen (H2) or synthetic
gases (H2 + CO) (SOEC). SOC is the only technology which is
able to perform this in ONE system, e.g. the whole system,
composed of the stack and the necessary periphery
(“balance-of-plant”), can be operated in both modes,
called rSOC “reversible solid oxide cell”.While in fuel
cell mode electrical efficiencies reach approx. $60\%$
(including thermal: > $80\%),$ in electrolysis mode the
“basic” efficiency is around $65\%$ and, if waste heat
and water vapor are existing, the percentage reaches values
above $90\%.Actual$ SOC stacks and systems have proven their
long-term availability by operational times of nearly
100,000 h (SOFC stack), ~ 40,000 h (SOFC system) and approx.
20,000 h (SOEC stack). During operation, stacks and systems
loose performance to a certain extent. Typical degradation
rates are ~ 0.5 $\%$ / 1,000 h in fuel cell and around 1
$\%$ / 1,000 h in electrolysis mode. Both operational modes
show partly different degradation effects.The presentation
gives an overview on the current materials used in solid
oxide fuel and electrolyzer stacks (e.g. cells, contacting,
sealants and interconnects) and highlights their operational
behavior in fuel cell and electrolysis mode and the main
materials-related degradation phenomena based on stack test
results.},
month = {Sep},
date = {2021-09-07},
organization = {Materials Week 2021, Online (Germany),
7 Sep 2021 - 9 Sep 2021},
subtyp = {Invited},
cin = {IEK-1 / IEK-2 / ZEA-1 / IEK-9 / IEK-14},
cid = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013 /
I:(DE-Juel1)ZEA-1-20090406 / I:(DE-Juel1)IEK-9-20110218 /
I:(DE-Juel1)IEK-14-20191129},
pnm = {1231 - Electrochemistry for Hydrogen (POF4-123) / 1232 -
Power-based Fuels and Chemicals (POF4-123) / SOFC - Solid
Oxide Fuel Cell (SOFC-20140602)},
pid = {G:(DE-HGF)POF4-1231 / G:(DE-HGF)POF4-1232 /
G:(DE-Juel1)SOFC-20140602},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/894913},
}