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@INPROCEEDINGS{Jeong:827365,
author = {Jeong, Hyeondeok and Menzler, Norbert H. and Lenser,
Christian and Geis, Michael and Fendt, Sebastian and
Guillon, Olivier},
title = {{S}olid {O}xide {F}uel {C}ell ({SOFC}) {C}ermet {A}nodes
{R}esistant to {C}arbon {D}eposition and {S}ulfur
{P}oisoning},
reportid = {FZJ-2017-01501},
year = {2017},
abstract = {Due to their high operating temperature (700-1000 ̊C),
solid oxide fuel cells (SOFCs) are in principle able to work
with various types of hydrocarbon fuels, such as natural
gas, reformed coal gas (syngas) and biofuels, without high
cost catalysts or external reformer. Furthermore, SOFCs have
high converting efficiency and environmental compatibility.
Because of these attractive features, SOFCs are expected to
take over a major role in energy converting technologies in
near future. However, for the direct use of commercial hydro
carbon fuels in SOFCs, there are several technical
challenges still remaining such as sulfur poisoning and
carbon deposition on anode surface. Currently,
Ni/yttria-stabilized zirconia (YSZ) cermet is typically used
as an SOFC anode material [1]. Although Ni shows good
catalytic activity for reformation and oxidation of
hydrocarbon fuels, the carbon deposition and sulfur
poisoning on Ni surface remarkably degrades the
electrochemical performance. Therefore, in this study, SOFC
with alternative anode materials to prevent sulfur poisoning
and carbon deposition were manufactured. This work is
finanzed by the Deutsche Forschungsgemeinschaft (DFG), a
collaborative work of Jülich research center (JÜLICH) and
Technical University of Munich (TUM) and is aiming for the
coupling of a biomass gasification system and an SOFC. The
new cells were manufactured by JÜLICH, and the cells have
been tested at TUM. As an alternative anode,
Ni/gadolinia-doped-ceria (GDC) anode is attempted instead of
Ni/YSZ. It is reported that the GDC has better poisoning
resistivity and higher conductivity than YSZ [2-3]. A third
way is to modify the Ni/YSZ anode with molybdenum which is
well known as excellent desulfurization material [4]. To
compare the new anode cell with state-of-the-art cell, all
cells are also manufactured by tape casting and screen
printing according to procedures established in JÜLICH [5].
At TUM, reference cells are tested with various kinds of tar
containing fuels to clarify the poisoning mechanism. After
cell test, post-test analysis of microstructure and phase
transformation was performed in JÜLICH. The poster
summarizes the results obtained so far.References: [1]. M.
Ihara, T. Kusano, and C. Yokoyama, J. Electrochem. Soc.,
148, A209 (2001)[2]. L. Zhang, S.P. Jiang, H.Q. He, X. Chen,
J. Ma, X.C. Song, Int. J. Hydrog. Energy, 35, 12359-12368
(2010)[3]. Sena Kavurucu Schubert, Mihails Kusnezoff,
Alexander Michaelis, Sergey I. Bredikhin, Journal of Power
Sources, 217, 364-372 (2012)[4]. M. Kuhn, J. A. Rodriguez,
J. Hrbek, Surf. Sci., 365, 53-68, (1996)[5]. Meulenberg WA,
Menzler NH, Buchkremer HP, Stöver D. Mater Electrochem
Energy Convers Storage Am Ceram Soc., 99-108 (2006)},
month = {Jan},
date = {2017-01-31},
organization = {7th International Conference on
Fundamentals and Development of Fuel
Cells, Stuttgart (Germany), 31 Jan 2017
- 2 Feb 2017},
subtyp = {After Call},
cin = {IEK-1 / JARA-ENERGY},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {135 - Fuel Cells (POF3-135) / SOFC - Solid Oxide Fuel Cell
(SOFC-20140602) / HITEC - Helmholtz Interdisciplinary
Doctoral Training in Energy and Climate Research (HITEC)
(HITEC-20170406)},
pid = {G:(DE-HGF)POF3-135 / G:(DE-Juel1)SOFC-20140602 /
G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/827365},
}