Enhanced catalyst interface for membrane electrode assembly

Details Enhanced catalyst interface for membrane electrode assembly Enhanced catalyst interface for membrane electrode assembly

2011-03-08

2011-03-08

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

C429S523000, C429S535000

Reexamination Certificate

active

07901829

ABSTRACT:
A membrane electrode subassembly includes an ion conducting membrane and a microporous layer having microtextured surfaces. Complementary features of the microtextured surfaces may be formed as grooves, ridges, pyramids or other shapes. Features of the microtextured surface of the ion conducting membrane engage features of the microporous layer. The engagement of the features of the microtextured surfaces may involve an interlocking fit, a tongue and groove fit, or another type of engagement. A thin catalyst layer is disposed between the microtextured surfaces. The microtextured surfaces increase the surface area at the catalyst layer interfaces.

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