Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Patent
1995-05-16
1997-02-11
Nuzzolillo, M.
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
429 16, 429 17, 429 19, H01M 804
Patent
active
056019360
ABSTRACT:
A fuel cell is operated at a temperature which is not greater than substantially 250.degree. C., has an electrolyte which can be a solid polymer electrolyte, a liquid phosphoric acid electrolyte, or a liquid alkaline electrolyte, and a cathode and an anode each comprising a platinum catalyst. Hydrogen fuel gas is supplied to the anode and a gaseous oxidant, for example oxygen is supplied to the cathode. The cathode and anode are both connected to first and second circuits in parallel. The first circuit includes a load to be powered by the fuel cell and a first switch. The second circuit includes a battery and a second switch. The switches are operated by a control. When the first swtich is closed the cell powers the load and the second switch is open. When the first switch is open the second switch is closed so the battery applies a reverse D.C. potential the anode and cathode. The first switch is closed and the second switch is open for a time period T1 which is substantially at least ten times greater than time period T2 for which the first switch is open and the second switch is closed. The time period T2 does not exceed substantially 0.25 seconds. The switches can be relays or solid state electronic switch arrangements.
REFERENCES:
patent: 3207682 (1965-09-01), Elmsford et al.
patent: 3300345 (1967-01-01), Lyons, Jr.
patent: 3436271 (1969-04-01), Cole et al.
patent: 3544380 (1970-12-01), Dey
patent: 4756718 (1988-07-01), Ueno et al.
patent: 5100742 (1992-03-01), Wang et al.
patent: 5132193 (1992-07-01), Reddy et al.
patent: 5462815 (1995-10-01), Horiuchi
J. Electrochem. Soc., vol. 139, No. 9, Sep. 1992, pp. 2519-2525, Shing-Ru Wang, et al., "Pulsed-Potential Oxidation of Methanol".
Electrochemical Technology, vol. 4, No. 9-10, Sep.-Oct. 1966, pp. 460-464, M. L. Kronenberg, et al., "Effects of Heavy Discharge Pulsing on Fuel Cell Electrodes".
Product Engineering, vol. 37, No. 9, Apr. 25, 1966, p. 40, M. C. Deibert, "A New Way To Improve The Electrochemical Efficiency of Hydrocarbon Fuel Cells".
Chemical Abstracts, vol. 103, No. 12, Sep. 23, 1985, AN-90483, JP-60-062063, Apr. 10, 1985.
Chemical Abstracts, vol. 106, No. 14, Apr. 6, 1987, AN-105462, JP-61-243663, Oct. 29, 1986.
Dicks Andrew L.
Dudfield Christopher D.
British Gas plc
Nuzzolillo M.
LandOfFree
Method of operating a fuel cell does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of operating a fuel cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of operating a fuel cell will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-340631