Ion-exchange materials

Details Ion-exchange materials Ion-exchange materials

C - Chemistry, Metallurgy

08

J

C08J 5/22 (2006.01) C08G 65/48 (2006.01) H01M 2/16 (2006.01) H01M 4/86 (2006.01) H01M 8/10 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2402838

An ion-exchange material, for example a polymer electrolyte membrane or gas diffusion electrode comprises a semi-crystalline copolymer comprising: a first unit which includes an ion-exchange site; a second crystalline unit; and a third unit which is amorphous. The third unit is used to disrupt the crystallinity of the copolymer thereby to increase its solubility in solvents. The material described may be used in fuel cells.

Une matière d'échange ionique, par exemple, une membrane d'électrolyte polymère ou une électrode de diffusion gazeuse renferme un copolymère semi-cristallin contenant un premier élément pourvu d'un site d'échange ionique, un second élément cristallin et un troisième élément qui est amorphe. Le troisième élément est utilisé pour interrompre la cristallinité du copolymère, ce qui permet d'accroître sa solubilité dans des solvants. La matière décrite peut être utilisée dans des piles à combustible.

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