Fuel cell (methanol) sensor with small load resistance and...

Details Fuel cell (methanol) sensor with small load resistance and... Fuel cell (methanol) sensor with small load resistance and...

H - Electricity

01

M

H01M 8/04 (2006.01) G01N 27/49 (2006.01)

Patent

CA 2355110

The measuring range of a fuel cell based concentration sensor can be extended by decreasing the load across the fuel cell terminals and by increasing the amount of oxidant supplied to the fuel cell. In this way, such a sensor avoids saturation, for example, when measuring methanol concentrations from 0 M to over 4 M in liquid aqueous solution. Such a sensor is suitable for use in measuring fuel concentrations in the recirculating fuel stream of certain fuel cell stacks (for example, direct methanol fuel cell stacks).

Il est possible d'étendre la plage de mesure d'une pile à combustible fondée sur un capteur de concentration en diminuant la charge dans les bornes de cette pile et en augmentant la quantité d'oxydant fourni à cette pile. Ainsi, un capteur de ce type évite toute saturation, par exemple, en mesurant les concentrations d'éthanol entre 0 M et plus de 4 M dans une solution aqueuse liquide. Un capteur de ce type permet de mesurer les concentrations de combustible dans le courant de combustible en recirculation de certaines piles à combustibles (par exemple, les piles à combustible au méthanol direct).

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