Method and apparatus for distributing water to an ion-exchange membrane in a fuel cell

A method and apparatus are provided for distributing water produced by the electrochemical reaction to an ion-exchange membrane in an electrochemical fuel cell. The method comprises periodically reversing the flow direction of an oxidant stream through a fuel cell flow field. The apparatus comprises...

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Bibliographische Detailangaben
Hauptverfasser:	CHAN, JOHN KA KI, CORLESS, ADRIAN JAMES, CHOW, CLARENCE Y.F
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A method and apparatus are provided for distributing water produced by the electrochemical reaction to an ion-exchange membrane in an electrochemical fuel cell. The method comprises periodically reversing the flow direction of an oxidant stream through a fuel cell flow field. The apparatus comprises a fuel stream flow switching device for periodically switching the flow direction of a fuel stream through a fuel cell flow field.