Method of improving the performance of a direct feed fuel cell

Details Method of improving the performance of a direct feed fuel cell Method of improving the performance of a direct feed fuel cell

H - Electricity

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H01M 8/00 (2006.01) H01M 8/04 (2006.01) H01M 8/10 (2006.01) H01M 8/24 (2006.01) H01M 4/86 (2006.01) H01M 4/92 (2006.01) H01M 16/00 (2006.01)

Patent

CA 2387547

The performance of a direct feed fuel cell such as, for example, a direct methanol fuel cell, with an anode having a CO-tolerant catalyst, such as a Pt-Ru catalyst, is improved by periodically reducing the output power of the cell to be less than the normal minimum output of the cell. This is effected, for example, by switching the cell at predetermined time intervals to an open circuit or reduced output power condition.

Le rendement d'une pile à combustible proprement dit, telle une pile au méthanol, dotée d'une anode dont le catalyseur résiste au Co, tel un catalyseur au Pt-Ru, est accru grâce à la réduction périodique de la puissance de sortie de la pile à un niveau inférieur à celui de sa puissance de sortie normale. Pareille puissance de sortie réduite s'obtient, par exemple, en commutant la pile en circuit ouvert à intervalles prédéterminés.

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