Addressing one MEA failure mode by controlling MEA catalyst...

Details Addressing one MEA failure mode by controlling MEA catalyst... Addressing one MEA failure mode by controlling MEA catalyst...

2006-11-07

2006-11-07

Dove, Tracy (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S006000, C429S006000, C429S047000

Reexamination Certificate

active

07132191

ABSTRACT:
A method of addressing one MEA failure mode by controlling MEA catalyst layer overlap, and the apparatus formed thereby is disclosed. The present invention addresses a feature of membrane electrode assembly (MEA) architecture that is associated with field failures due to the loss of ionomer from the edges of the electrolyte. To address ionomer degradation, the present invention provides a MEA design in which the cathode catalyst edges are closer than the anode catalyst edges to the edges of the electrolyte.

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