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Direct oxidation of sulfur-containing fuels in a solid oxide fuel cell
1Department of Chemical Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
Chemical Communications (Cambridge, England)
|September 21, 2002
Summary
Solid-oxide fuel cells with copper-ceria anodes offer stable power from direct hydrocarbon fuel oxidation. These fuel cells can be regenerated with steam after sulfur poisoning, demonstrating resilience.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Conversion
Background:
- Solid-oxide fuel cells (SOFCs) are promising for clean energy generation.
- Developing robust anodes resistant to fuel impurities is crucial for SOFC commercialization.
- Sulfur compounds in hydrocarbon fuels can poison conventional SOFC anodes.
Purpose of the Study:
- To investigate the performance of copper-ceria anodes in SOFCs using sulfur-containing hydrocarbon fuels.
- To assess the stability and regeneration capabilities of these anodes under sulfur exposure.
Main Methods:
- Fabrication of solid-oxide fuel cells utilizing copper-ceria composite anodes.
- Testing fuel cell performance via direct oxidation of hydrocarbon fuels with varying sulfur content.
- Implementing steam treatment for anode regeneration after sulfur poisoning.
Main Results:
- Stable power generation was achieved using Cu-ceria anodes with fuels containing sulfur levels comparable to gasoline.
- Anode poisoning by higher sulfur levels was observed.
- Successful regeneration of the poisoned anodes was demonstrated through steam treatment.
Conclusions:
- Copper-ceria anodes exhibit significant potential for direct hydrocarbon fuel utilization in SOFCs, even with sulfur impurities.
- The demonstrated regeneration capability enhances the practical applicability and durability of SOFC technology.