Hydrophobic fluorinated polyelectrolyte complex films and associated methods
First Claim
1. A fuel cell comprising a proton transporting membrane, wherein the proton transporting membrane comprises a polyelectrode film comprising a multilayer interpenetrating network of a net positively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms and a net negatively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms, and further comprising a perfluorinated counterion within the multilayer;
- wherein the perfluorinated counterion comprises a perfluorinated alkanesulfonic acid, a perfluorinated alkanecarboxylic acid, or both; and
wherein said perfluorinated alkanesulfonic acid, said perfluorinated alkanecarboxylic acid or both has at least four fluorine atoms and an alkane component having a molecular weight up to 300 g per mole.
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Accused Products
Abstract
A fuel cell comprising a proton transporting membrane is provided. The proton transporting membrane comprises a polyelectrolyte film comprising a multilayer comprising an interpenetrating network of a net positively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms and a net negatively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms, and further comprising a fluorinated counterion within the multilayer.
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Citations
21 Claims
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1. A fuel cell comprising a proton transporting membrane, wherein the proton transporting membrane comprises a polyelectrode film comprising a multilayer interpenetrating network of a net positively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms and a net negatively charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms, and further comprising a perfluorinated counterion within the multilayer;
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wherein the perfluorinated counterion comprises a perfluorinated alkanesulfonic acid, a perfluorinated alkanecarboxylic acid, or both; and wherein said perfluorinated alkanesulfonic acid, said perfluorinated alkanecarboxylic acid or both has at least four fluorine atoms and an alkane component having a molecular weight up to 300 g per mole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A fuel cell comprising a proton transporting membrane, the proton transporting membrane comprising a film comprising multilayers of a charged polyelectrolyte polymer comprising repeat units with at least two fluorine atoms electrostatically complexed with a perfluorinated charged particle comprising repeat units with at least two fluorine atoms, wherein the charge of the polyelectrolyte polymer is opposite that of the charge of the perfluorinated charged particle;
- wherein the multilayers comprise layer pairs and each layer pair comprises the polyelectrolyte polymer electrostatically complexed with the perfluorinated charged particle, and the multilayers are created from the polyelectrolyte polymer and an aqueous dispersion or suspension of the fluorinated polymer particles.
- View Dependent Claims (20, 21)
Specification