PEM fuel cell stack without gas diffusion media

Details PEM fuel cell stack without gas diffusion media PEM fuel cell stack without gas diffusion media

2005-07-12

2005-07-12

Chaney, Carol (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000

Reexamination Certificate

active

06916573

ABSTRACT:
A fuel cell comprising an ionically conductive member with a first surface and a second surface. An anode electrode is disposed on the first surface of the ionically conductive member and a cathode electrode is disposed on the second surface of the ionically conductive member. A first electrically conductive fluid distribution element is disposed on the anode and a second electrically conductive fluid distribution element is disposed on the cathode. The first and second electrically conductive fluid distribution elements each include a plurality of alternating lands and fluid passages. The anode and the cathode are comprised of a plurality of electrochemically active regions that are disposed to essentially align with the fluid passages.

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Trabold et al., “High Pressure Annular Two-Phase Flow in a Narrow Duct: Part I-Local Measurements in the Droplet Field”, ASME, 122, Jun. 2000.
Wilson, et al., “Thin-film catalyst layers for polymer electrolyte fuel cell electrodes,” Electronics Research Group, Los Alamos National Laboratory, Feb. 1991.

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