Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation
Reexamination Certificate
2004-10-08
2010-12-07
Michener, Jennifer K (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S455000, C429S456000, C429S457000, C429S483000, C429S513000, C429S514000
Reexamination Certificate
active
07846601
ABSTRACT:
A fuel cell system that provides a flow of anode exhaust gas into the cathode side of the fuel cells without allowing the anode exhaust gas flow and the cathode input flow to mix in a large volume. In one embodiment, strategically positioned perforations in the MEAs allow the anode exhaust gas to cross over to the cathode channels near the cathode input. These perforations could be provided as an array of small holes in an MEA sub-gasket or an MEA carrier frame. In an alternate embodiment, openings are provided through the bipolar plates that allow the anode exhaust to flow into the cathode channels. This configuration would require a special anode half-plate at one end of the stack to provide the opening.
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Chuo Tony
GM Global Technology Operations Inc.
Michener Jennifer K
Miller John A.
Miller IP Group, PLC
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