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Electrochemical sensor for monitoring electrochemical potentials of fuel cell components

Patent ·
OSTI ID:5370824
;
An electrochemical sensor comprised of wires, a sheath, and a conduit can be utilized to monitor fuel cell component electric potentials during fuel cell shut down or steady state. The electrochemical sensor contacts an electrolyte reservoir plate such that the conduit wicks electrolyte through capillary action to the wires to provide water necessary for the electrolysis reaction which occurs thereon. A voltage is applied across the wires of the electrochemical sensor until hydrogen evolution occurs at the surface of one of the wires, thereby forming a hydrogen reference electrode. The voltage of the fuel cell component is then determined with relation to the hydrogen reference electrode. 4 figures.
Assignee:
International Fuel Cells Corp., South Windsor, CT (United States)
Patent Number(s):
A; US 5262034
Application Number:
PPN: US 7-966002
OSTI ID:
5370824
Country of Publication:
United States
Language:
English

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Related Subjects

30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
CHEMISTRY
DESIGN
DIRECT ENERGY CONVERTERS
ELECTRIC POTENTIAL
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
FUEL CELLS
MEASURING INSTRUMENTS
MONITORING
OPERATION