Active control strategy for PEM fuel cell liquid water...

Details Active control strategy for PEM fuel cell liquid water... Active control strategy for PEM fuel cell liquid water...

2004-06-28

2010-12-28

Ryan, Patrick (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

C429S432000, C429S400000, C429S512000

Reexamination Certificate

active

07858252

ABSTRACT:
The present invention provides a fuel cell stack and a method of operating the same that allows for removal of liquid water and minimizes the impact of liquid water on the performance of the fuel cells. By selectively blocking the cathode reactant flow from exiting the fuel cell stack improved water management can be achieved. The selective blocking of the cathode reactant from exiting the fuel cell stack also helps to increase the partial pressure of the oxygen toward the exit side of the fuel cell stack which improves the chemical kinetics and the voltage produced by the fuel cells.

REFERENCES:
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patent: 5316871 (1994-05-01), Swathirajan et al.
patent: 5366821 (1994-11-01), Merritt et al.
patent: 6037072 (2000-03-01), Wilson et al.
patent: 6696190 (2004-02-01), Haridoss
patent: 6841278 (2005-01-01), Reiser et al.

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