Fuel cell CO sensor

Details Fuel cell CO sensor Fuel cell CO sensor

1997-10-24

1999-12-14

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 23, 481277, H01M 804

Patent

active

060014997

ABSTRACT:
The CO concentration in the H.sub.2 feed stream to a PEM fuel cell stack is monitored by measuring current and/or voltage behavior patterns from a PEM-probe communicating with the reformate feed stream. Pattern recognition software may be used to compare the current and voltage patterns from the PEM-probe to current and voltage telltale outputs determined from a reference cell similar to the PEM-probe and operated under controlled conditions over a wide range of CO concentrations in the H.sub.2 fuel stream. A CO sensor includes the PEM-probe, an electrical discharge circuit for discharging the PEM-probe to monitor the CO concentration, and an electrical purging circuit to intermittently raise the anode potential of the PEM-probe's anode to at least about 0.8 V (RHE) to electrochemically oxidize any CO adsorbed on the probe's anode catalyst.

REFERENCES:
patent: 4025412 (1977-05-01), LaConti
patent: 4227984 (1980-10-01), Dempsey et al.
patent: 4910099 (1990-03-01), Gottesfeld
patent: 5322602 (1994-06-01), Razaq
patent: 5573648 (1996-11-01), Shen et al.
patent: 5843195 (1998-12-01), Aoyama

Affiliated with

Also associated with

Rating

Fuel cell CO sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel cell CO sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel cell CO sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-861349