Effects of sulfur-containing gases on molten carbonate fuel cell behavior

Conference · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6163558

Claar, T D; Donado, R A; Marianowski, L G

The effects of sulfur on performance and endurance of molten carbonate fuel cells were investigated using gases containing 10 to 50 ppM H/sub 2/S in fuel or SO/sub 2/ in oxidant. Performance penalties were quite severe with standard components and losses were predominatly at the anode. Sulfur introduced into the cathode as SO/sub 2/ was absorbed by the carbonate electrolyte, most likely as sulfate, transported through the tile, and regenerated at the anode as H/sub 2/S and COS. Thermodynamic analyses and pot equilibration tests under highly utilized low-Btu fuel containing 50 ppM H/sub 2/S indicate only low levels of alkali sulfide or sulfate are expected on the anode side of the cell. Data have been obtained on the effects of sulfur species on anode materials stability, electrolyte chemistry, component corrosion, and LiAlO/sub 2/ support particles. Promising cell performance results have been obtained with cobalt-based anodes.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• DOE Contract Number: EM-78-C-03-1735
• OSTI ID: 6163558
• Report Number(s): CONF-7810130-3
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300502* -- Fuel Cells-- Performance & Testing
ALKALI METAL COMPOUNDS
ALUMINATES
ALUMINIUM COMPOUNDS
ANODES
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
ELEMENTS
ENERGY SOURCES
FLUIDS
FUEL CELLS
FUEL GAS
FUELS
GAS FUELS
GASES
HIGH-TEMPERATURE FUEL CELLS
HYDROCARBON FUEL CELLS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IMPURITIES
LITHIUM COMPOUNDS
LOW BTU GAS
MATRIX MATERIALS
MOLTEN SALTS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POISONING
REACTOR MATERIALS
SALTS
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMODYNAMICS