A fuel cell incorporating a modified ion exchange membrane

H - Electricity – 01 – M

Patent

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H01M 8/10 (2006.01) B01D 71/06 (2006.01) C08J 5/22 (2006.01) H01B 1/12 (2006.01)

Patent

CA 2448977

The present invention provides a fuel cell that comprises a modified ion exchange membrane. The present invention additionally provides modified membranes produced by in situ polymerisation of monomers, such as aryls, heteroaryls, substituted aryls, substituted heteroaryls or a combination thereof, on anf/or within an ion exchange membrane. The modified membranes can exhibit reduced permeability to fuel crossover in comparison to the unmodified membranes, often without a significant increase in ionic resistance. The present invention further provides methods for preparing and testing, or evaluating, the modified membranes and fuel cell comprising the modified membranes.

L'invention concerne une pile à combustible comprenant une membrane d'échanges ioniques modifiée. L'invention concerne également des membranes modifiées produites par polymérisation <i>in situ</i> de monomères, tels que les aryles, les hétéroaryles, les aryles substitués, les hétéroaryles substitués ou une combinaison de ceux-ci, sur une ou dans une membrane d'échanges ioniques. Les membranes modifiées peuvent présenter une perméabilité réduite à la traversée du combustible par rapport aux membranes non modifiées, souvent sans augmentation significative de la résistance ionique. L'invention concerne enfin des procédés permettant de préparer, de tester, ou d'évaluer les membranes modifiées, et la pile à combustible comprenant lesdites membranes modifiées.

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