Proton conductive membrane and production thereof

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 5/22 (2006.01) C08G 61/00 (2006.01) C08L 101/00 (2006.01) H01B 1/06 (2006.01) H01B 13/00 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2548439

A proton conducting membrane that exhibits satisfactory proton conductivity even at low humidity and low temperature. There is provided a proton conducting membrane comprising a block copolymer of such a structure that a main chain skeleton composed of ion conducting polymer segment (A) and non-ion- conducting polymer segment (B) has aromatic rings covalent bonded to each other through a bonding group, characterized in that: (i) the morphology of the membrane has a micro phase separation structure, and (ii) the ion conducting polymer segment (A) constitutes a continuous phase.

L'invention concerne une membrane conductrice de protons qui présente une conductivité des protons satisfaisante même à faible humidité et à basse température. L'invention concerne une membrane de conduite de protons comprenant un copolymère séquencé présentant une structure telle qu'un squelette de chaîne principale composé d'un segment polymère (A) conducteur d'ions et d'un segment polymère (B) non conducteur d'ions présente des noyaux aromatiques liés par covalence les uns aux autres par l'intermédiaire d'un groupe de liaison. Ladite membrane est caractérisée en ce que (i) sa morphologie présente une structure de séparation de microphases et (ii) le segment polymère (A) conducteur d'ions constitue une phase continue.

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