A proton exchange membrane particularly suitable for use in...

Details A proton exchange membrane particularly suitable for use in... A proton exchange membrane particularly suitable for use in...

C - Chemistry, Metallurgy

08

F

C08F 214/18 (2006.01) C08J 5/18 (2006.01) C08L 27/12 (2006.01) H01M 2/16 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2058172

ABSTRACT The invention is a fluoropolymer material particularly suitable for use as a proton exchange membrane in a proton exchange membrane fuel cell. The characteristics that make the material particularly useful are the Pact that is has an equivalent weight between 700 and 1,000 and a water absorption as high as about 100 weight percent, based on dry membrane. In addition, it is desirable for the nonionic precursor form of the proton exchange membrane polymer to have a melt viscosity of between 6,000 and 80,000 Poise at 250°C in accordance with ASTM test method D- 3835. The invention also includes a film formed from the fluoropolymer material that has a thickness of from 0.002 inch (0.0051) to 0.009 inch (0.0229 cm). In addition, the invention includes a PEM fuel cell containing the high-performance PEM fuel cell film and a method for generating electricity using the PEM fuel cell. 39.344-F

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