München 2006 – wissenschaftliches Programm
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AKE: Energie
AKE 2: Brennstoffzellen
AKE 2.1: Vortrag
Montag, 20. März 2006, 14:45–15:05, L
Operational Data for SOFC operated with Simulated Gasoline Reformate and Pure Carbon Monoxide — •Holger Apfel1, Ulrich Stimming1,2, and Carsten Cremers2 — 1Department of Physics E 19, TU Munich, James-Franck-Str. 1, D-85748 Garching — 2ZAE Bayern, Walther-Meißner-Str. 6, D-85748 Garching
Solid oxide fuel cells (SOFCs) are a promising technique to efficiently convert fuels available today like gasoline. Nevertheless, most of the data currently published for SOFC refers to the operation with hydrogen and air.
In order to get a database to predict the cell performance using reformate based on the cell performance measured with hydrogen, SOFCs were operated in a single cell configuration with synthetic reformate. Gas compositions were chosen according to the gas compositions measured at the output of an autothermal reformer ∖1∖. The cell output with reformate was related to the output obtained with a reference fuel (91% hydrogen). For all relevant compositions the cell power output with reformate exceeded 80% of the reference value.
Furthermore, cells were fuelled with pure carbon monoxide and oxygen and run at 0.7 V. All cells showed an initial increase in current density, followed by a decrease which seems to stabilize at about 60% of the maximum current. Afterwards the cells were inspected by SEM revealing changes in the cell structure, especially near the gas input and along the flow field channels.
∖1∖ PhD thesis Maria Brandmaier, TU Munich, 2005