Fuel cell with pulsed anode potential

Details Fuel cell with pulsed anode potential Fuel cell with pulsed anode potential

H - Electricity

01

M

H01M 8/04 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2284589

The invention concerns a fuel cell (1) comprising an electrode-electrolyte unit (2, 3, 4) with an anode catalyst whose catalytic activity in a fuel cell is reduced by carbon monoxide and with means (5, 6) for varying the anode potential in pulsed manner such that carbon monoxide which has been adsorbed on the catalyst is oxidized. In this way, power losses owing to carbon monoxide adsorption at the anode catalyst are reduced.

L'invention concerne une pile à combustible (1) comprenant une unité électrode-électrolyte (2, 3, 4), un catalyseur anodique dont l'activité catalytique dans une pile à combustible est réduite par du monoxyde de carbone, ainsi que des moyens (5, 6) permettant de faire varier le potentiel anodique sous forme pulsée, de telle façon que le monoxyde de carbone adsorbé sur le catalyseur soit oxydé. On réduit ainsi les pertes de puissance dues aux adsorptions de monoxyde de carbone sur le catalyseur anodique.

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