Method of operating a fuel cell. [pressure differential between anolyte and catholyte to prevent poisoning]
Patent
·
OSTI ID:6943041
A fuel cell is described comprising anolyte and catholyte compartments separated by a diffusion barrier and using sodium sulfide aqueous solution as anolyte and an aqueous catholyte solution. The apparatus is controlled to maintain a positive pressure differential across the anolyte/catholyte interface in the barrier towards the anolyte side to attenuate sulfide ion migration to the catholyte and reduce solid sulfur precipitation in the catholyte and thereby attenuate consequent cathode passivation or other forms of catholyte compartment poisoning.
- Assignee:
- GEL, Inc.
- Patent Number(s):
- US 4053684
- OSTI ID:
- 6943041
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
30 DIRECT ENERGY CONVERSION
300501* -- Fuel Cells-- Design & Development
ALKALI METAL COMPOUNDS
CHALCOGENIDES
DESIGN
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROLYTES
ELEMENTS
FUEL CELLS
IMPURITIES
MEMBRANES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POISONING
POLYMERS
POLYOLEFINS
POLYPROPYLENE
PRESSURE GRADIENTS
SODIUM COMPOUNDS
SODIUM SULFIDES
SULFIDES
SULFUR
SULFUR COMPOUNDS
300501* -- Fuel Cells-- Design & Development
ALKALI METAL COMPOUNDS
CHALCOGENIDES
DESIGN
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELECTROLYTES
ELEMENTS
FUEL CELLS
IMPURITIES
MEMBRANES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POISONING
POLYMERS
POLYOLEFINS
POLYPROPYLENE
PRESSURE GRADIENTS
SODIUM COMPOUNDS
SODIUM SULFIDES
SULFIDES
SULFUR
SULFUR COMPOUNDS