[특허]Fuel cell CO sensor

Fuel cell CO sensor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-008/04
출원번호	US-0957563 (1997-10-24)
발명자 / 주소	Grot Stephen Andreas Meltser Mark Alexander Gutowski Stanley Neutzler Jay Kevin Borup Rodney Lynn Weisbrod Kirk
출원인 / 주소	General Motors Corporation
대리인 / 주소	Plant
인용정보	피인용 횟수 : 68 인용 특허 : 6

초록 ▼

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.

대표청구항 ▼

[ We claim:] [1.] A carbon monoxide sensor comprising a gas-monitoring PEM-probe including a proton exchange membrane having an anode and a cathode affixed to opposing first and second surfaces of said membrane, a first electrical current collector engaging said anode, a second electrical current collector engaging said cathode, an electrical discharge circuit connectable between said current collectors, said discharge circuit having a first electrical resistance valued for discharging said PEM-probe at a first rate selected to monitor the degrading output of said PEM-probe incident to CO contamination of said anode, an electrical purging circuit connectable between said current collectors, said purging circuit having a second electrical resistance which is less than said first electrical resistance such that upon discharge of said PEM-probe through said second resistance the potential of said anode is raised to at least 0.8 V (RHE) to effect electrochemical oxidation of any CO adsorbed on said anode, and an electrical switch in electrical series connection between said current collectors and adapted to intermittently, alternately electrically connect said current collectors to said discharge and said purging circuits.

이 특허에 인용된 특허 (6)

Aoyama Satoshi,JPX, Apparatus for reducing carbon monoxide concentration, apparatus for reducing methanol concentration, and fuel reformer u.
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LaConti Anthony B. (Lynnfield MA), Electrically biased two electrode, electrochemical gas sensor with a H₂ counter/reference electrode incorp.
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Shen Yousheng (Salt Lake City UT) Consadori Franco (Salt Lake City UT) Field D. George (Pleasant Grove UT), Gas sensor based on protonic conductive membranes.
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Razaq Mohammed (Hacienda Heights CA), Gas sensors.
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Dempsey Russell M. (Hamilton MA) LaConti Anthony B. (Lynnfield MA) Nolan Mary E. (Topsfield MA), Potentiostated, three-electrode, solid polymer electrolyte (SPE) gas sensor having highly invariant background current c.
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Gottesfeld Shimshon (Los Alamos NM), Preventing CO poisoning in fuel cells.
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Jeffcoate, Carol S.; Gershun, Aleksei V.; Woyciesjes, Peter M.; Marinho, Filipe J., Heat transfer compositions with high electrical resistance for fuel cell assemblies.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Fuel cell CO sensor 원문보기

초록 ▼

대표청구항 ▼

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이 특허에 인용된 특허 (6)

이 특허를 인용한 특허 (68)

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연합인증

Fuel cell CO sensor 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

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이 특허에 인용된 특허 (6)

이 특허를 인용한 특허 (68)

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