Membrane electrode assembly and polymer electrolyte fuel...

Details Membrane electrode assembly and polymer electrolyte fuel... Membrane electrode assembly and polymer electrolyte fuel...

2011-07-19

2011-07-19

Yuan, Dah-Wei (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Fuel cell with solid electrolyte

C429S492000, C429S477000

Reexamination Certificate

active

07981566

ABSTRACT:
A membrane electrode assembly for a polymer electrolyte fuel cell has superior power generation characteristics under low humidity conditions and superior starting characteristics under low temperature conditions. In the membrane electrode assembly for a polymer electrolyte fuel cell in which a polymer electrolyte membrane is disposed between a pair of electrodes containing a catalyst, the polymer electrolyte membrane has a polymer segment A having an ion conductive component and a polymer segment B not having an ion conductive component. Furthermore, in the case in which the polymer electrolyte membrane is immersed in water at 90° C. for 30 minutes, absorbed water which exhibits a thawing temperature of from −30 to 0° C. is in a range from 0.01 to 3.0 g per 1 g of the polymer.

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