Effects of H2S on molten carbonate fuel cells
Abstract
The identification of the poisoning mechanism(s) responsible for performance losses of molten carbonate fuel cells (MCFC) when operating on sulfur containing gases was analyzed. The focusing was on out of cell and in cell experiments on single mechanistic issues, followed by incorporation of the results into a model that correlates cell potential decline to contaminants(s) concentration. When coupled with gas cleanup cost projections, the model can be used to conduct trade off studies which lead to the selection of optimum feed gas compositions for MCFC power plants. The degree to which H2S and other contaminants must be removed from typical MCFC fuels has a profound effect on the cost of cleaning the fuel gas, especially if contaminant levels lower than 0.1 ppM are required. The anticipated product from the overall program is a justifiable specification for gas cleanup requirements for MCFC power plants.
- Publication:
-
Progress Report
- Pub Date:
- July 1984
- Bibcode:
- 1984igt..reptR....R
- Keywords:
-
- Carbonates;
- Electric Potential;
- Fuel Cells;
- Gases;
- Hydrogen;
- Molten Salts;
- Poisoning (Reaction Inhibition);
- Impurities;
- Nickel;
- Oxidation;
- Performance Tests;
- Polarization (Waves);
- Sulfur;
- Electronics and Electrical Engineering