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US 7,842,733 B2Granted
Aromatic polyether copolymers and polymer blends and fuel cells comprising same
AssigneeAdvent Technologies
InventorsNora Gourdoupi, Nikolaos Triantafyllopoulos, Valadoula Deimede, Lefteris Pefkianakis, Maria Daletou, Stylianos Neophytides, Joannis Kallitsis
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Abstract
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.
Claims25
A polymer material comprising a structure of the following Formula (II):
- wherein each X is independently a chemical bond, optionally substituted alkylene, optionally substituted aromatic group, a hetero linkage (O, S or NH), carboxyl or sulfone;
- each Y is the same or different and is sulfone, carbonyl or a phenyl phosphinoxide unit;
- and
- x and y are positive integers.
1 more element
Dependencies are inferred from the claim text.