Method and apparatus for coating an ion-exchange membrane...

Details Method and apparatus for coating an ion-exchange membrane... Method and apparatus for coating an ion-exchange membrane...

B - Operations, Transporting

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B01J 47/12 (2006.01) B01D 61/00 (2006.01) B05C 5/00 (2006.01) B05C 15/00 (2006.01) B05D 1/12 (2006.01) B05D 3/12 (2006.01) B05D 5/12 (2006.01) H01M 2/16 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2446448

A method for coating an ion-exchange membrane with a catalyst layer by first heating a surface of the membrane to thereby soften the surface, followed by deposition of a catalyst composition and compaction into the ion-exchange membrane to produce a catalyst-coated membrane. I-lasting of the ion-exchange membrane may be at a temperature between 20°C and 50°C, typically between 30°C and 40°C, above the glass transition temperature of the dry ion-exchange membrane. In one embodiment, the catalyst composition is fluidized in a fluidized bed reactor prior to being deposited on the membrane surface. A system for coating the ion-exchange membrane is also provided. The catalyst-coated membrane is particularly useful in electrochemical fuel cells.

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