Method for operating a fuel cell on carbon monoxide...

Details Method for operating a fuel cell on carbon monoxide... Method for operating a fuel cell on carbon monoxide...

H - Electricity

01

M

319/23

H01M 8/22 (2006.01) H01M 8/06 (2006.01)

Patent

CA 1305212

ABSTRACT The invention disclosed relates to a method for operating a low-temperature fuel cell on a fuel gas mixture containing carbon monoxide. The gas mixture is mixed with an oxygen-containing gas, such as air, in a molar ratio of oxygen to carbon monoxide of about 0.5 to 3:1. The resulting gas mixture is then contacted with a catalyst, such as platinum, at a reaction temperature of about 10 to 160°C and pressure of about atmospheric to 500 psig. Under these conditions selective oxidation of the carbon monoxide occurs. This novel method permits the use of carbon monoxide-containing fuel gases in low temperature fuel cells employing platinum group metal electrodes without poisoning the electrodes.

569048

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