Cation/proton-conducting ceramic membrane infiltrated with...

Details Cation/proton-conducting ceramic membrane infiltrated with... Cation/proton-conducting ceramic membrane infiltrated with...

B - Operations, Transporting

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D

B01D 71/02 (2006.01) B01D 53/32 (2006.01) B01D 69/10 (2006.01) B01D 69/14 (2006.01) B01D 71/04 (2006.01) B01J 31/02 (2006.01) B01J 35/06 (2006.01) C08J 5/22 (2006.01) C25B 13/04 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2431057

The invention relates to a cation-conducting or proton-conducting ceramic membrane, a method for the production thereof and the use of the same. The inventive membrane represents a novel category of solid proton-conducting membranes, and is based on a porous and flexible ceramic membrane described in patent application PCT/EP98/05939. Said membrane is modified in such a way that it exhibits ion-conducting properties, and is then treated with an ionic liquid. Due to the use of the ionic liquid, the inventive membrane has a very good proton or cation conductivity even at temperatures above 100 ~C. The proton-conducting or cation-conducting ceramic membrane thus remains flexible and can be used without a problem as a membrane in a fuel cell.

L'invention concerne une membrane conductrice de cations ou de protons, son procédé de production et son utilisation. La membrane selon l'invention représente une nouvelle classe de membranes solides conductrices de protons. La base de cette invention est une membrane céramique souple et poreuse, décrite dans le dépôt de brevet PCT/EP98/05939. Cette membrane est modifiée de façon à présenter des propriétés de conductivité ionique. Puis, elle est traitée avec un liquide ionique. Grâce à l'utilisation du liquide ionique, la membrane selon l'invention présente une très bonne conductivité de protons ou de cations, même à des températures supérieures à 100 ·C. Ce faisant, la membrane céramique conductrice de protons ou de cations reste souple et peut être utilisée sans problème en tant que membrane dans une pile à combustible.

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