Flow-field plate and fuel cell stack using the same

Details Flow-field plate and fuel cell stack using the same Flow-field plate and fuel cell stack using the same

2006-03-29

2010-12-07

Michener, Jennifer K (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Grouping of fuel cells into stack or module

C429S460000, C429S507000

Reexamination Certificate

active

07846608

ABSTRACT:
Disclosed is a flow-field plate and fuel cell stack using the same. The flow-field plate of the present invention comprises a center hole (5) formed at the center of the flow-field plate, a inlet (6) and a outlet (7) formed on two positions near the outer edge of the flow-field plate, and flow grooves extending radially from the center hole (5) on one side of the flow-field plate. Since the flow-field plate according to the present invention may comprise flow grooves extending radially and having short flow path, which is benefit for reactants diffusion, there is no “dead-end” on the flow-field plate and reactants may distribute uniformly to each part of flow-field plate. Furthermore, resultants generated from reaction, such as water, nitrogen, carbon dioxide, etc., may be discharged in time and not accumulate on flow-field plate. Therefore, the reactant utilization ratio, the fuel cell performances and its service life may be improved.

REFERENCES:
patent: 5108849 (1992-04-01), Watkins et al.
patent: 6270917 (2001-08-01), Maeda et al.
patent: 6348280 (2002-02-01), Maeda et al.
patent: 6541145 (2003-04-01), Wilkinson et al.
patent: 6586128 (2003-07-01), Johnson et al.
patent: 2003/0180601 (2003-09-01), Naruse et al.
patent: 2004/0142225 (2004-07-01), Turpin et al.
patent: 1242614 (2000-01-01), None
patent: 2524379 (2002-12-01), None
patent: 1405909 (2003-03-01), None
patent: 2552171 (2003-05-01), None
patent: 1449066 (2003-10-01), None
patent: 1507666 (2004-06-01), None
PCT International Search Report for PCT Counterpart Application No. PCT/CN2006/000541 containing Communication relating to the Results of the Partial International Search Report, 2 pgs., (Jun. 15, 2006).
PCT International Search Report for PCT Counterpart Application No. PCT/CN2006/000540 containing Communication relating to the Results of the Partial International Search Report, 2 pgs., (Jun. 15, 2006).

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