Composite ion exchange material
AssigneeVictrex Manufacturing Limited
InventorsPeter Charnock, Brian Wilson, Richard F. Bridges
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Abstract
A composite material, for example a composite membrane for a polymer electrolyte membrane fuel cell includes a first conductive polymer and a support material for the polymer, wherein the support material comprises a second conductive polymer. A method making of the composite material is also disclosed as is its use as a polymer electrolyte membrane in a fuel cell.
Claims21
A composite material which comprises a first ion-conductive polymer and a support material for the polymer, wherein the support material comprises a second ion-conductive polymer, said support material defines a porous support and said first ion-conductive polymer impregnates the porous support.
A composite material which includes a first ion-conductive polymer and a support material for the polymer, wherein the support material comprises a second conductive polymer and wherein said first ion-conductive polymer is in contact with said second ion-conductive polymer, said first ion-conductive polymer comprising a polymer selected from a first group consisting of a polysulphone, polyimide, polyphenylene, oxide, polyphenylene sulphoxide, polyphenylene sulphide, polyphenylene sulphide sulphone, polyparaphenylene, polyphenylquinoxaline, polyarylketone, polyetherketone, polybenzazole, polyaramid and a perfluorinated ionomer, each of the aforesaid being functionalized to provide ion-exchange sites;
- polystyrene sulphonic acid, polytrifluorostyrene sulphonic acid, polyvinylphosphonic acid, polyvinylcarboxylic acid and polyvinylsulphonic acid polymers;
- and said second ion-conductive polymer being independently selected from a polymer in said first group.
Dependencies are inferred from the claim text.