A fuel cell powered by direct fuel, for example a direct methanol fuel cell, includes a polymer electrolyte membrane which includes a semi-crystalline polymer. Preferred semi-crystalline polymers include first repeat units comprising sulphonated aromatic group containing moieties linked by --SO.sub.2-- and/or --CO-- and/or -Q-groups, where Q is O or S and second repeat units which include aromatic group containing moieties linked by --CO-- and/or Q groups.

 
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> Electrochemical fuel cell comprised of a series of conductive compression gaskets and method of manufacture

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