Electrolytic reactor such as fuel cell with zeolite membrane

Details Electrolytic reactor such as fuel cell with zeolite membrane Electrolytic reactor such as fuel cell with zeolite membrane

H - Electricity

01

M

H01M 8/08 (2006.01) C25B 5/00 (2006.01) C25B 13/04 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2289607

An electrochemical reactor such as a fuel cell has a zeolite membrane (7) separating the anode (4) and cathode (5) compartments which allows the passage of ions through the membrane to carry an electric current, but prevents the passage of fuel molecules etc. through the membrane which might poison the catalyst used in the fuel cell. It is useful in methanol fuel cells using a basic electrolyte such as a carbonate salt and there can be a second zeolite membrane which prevents escape of methanol into the atmosphere which enables the fuel cell to operate at higher temperatures and hence be more efficient.

L'invention concerne un réacteur électrochimique, tel qu'une pile à combustible, doté d'une membrane (7) en zéolite séparant les compartiments anodique (4) et cathodique (5), ce qui permet le passage d'ions porteurs de courant à travers cette membrane, mais empêche le passage de molécules d'hydrocarbures, etc., qui pourraient contaminer le catalyseur utilisé dans la pile à combustible à travers cette membrane. Ce réacteur est utilisé dans des piles à combustible au méthanol utilisant un électrolyte de base, tel qu'un sel carbonate. Il peut être doté d'une seconde membrane en zéolite qui empêche la fuite de méthanol dans l'atmosphère et permet le fonctionnement de la pile à combustible à des températures plus élevées et par conséquent une augmentation de son efficacité.

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