Aromatic polyether copolymers and polymer blends and fuel...

C - Chemistry – Metallurgy – 08 – L

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C08L 71/10 (2006.01) C08G 65/40 (2006.01) C08K 3/32 (2006.01) H01M 4/86 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2662608

High temperature polymer electrolyte membranes bearing pyridine and tetramethyl biphenyl moieties are provided. Preferred polymers can exhibit good mechanical properties, high thermal and oxidative stability and high doping ability with strong acids. Further provided are MEA on PEMFC type single cells.

L'invention concerne des membranes électrolytes polymères de température élevée renfermant des groupes caractéristiques de pyridine et de biphényle tétraméthyle. Les polymères préférés présentent de bonnes propriétés mécaniques, une stabilité par oxydation et thermique élevée et une aptitude au dopage élevée avec des acides forts. L'invention concerne également des ensembles d'électrodes à membrane (MEA) sur des cellules uniques de type PEMFC.

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