Fuel cell stack including hydrogen pumping fuel cells

Details Fuel cell stack including hydrogen pumping fuel cells Fuel cell stack including hydrogen pumping fuel cells

2003-12-23

2008-11-11

Crepeau, Jonathan (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C429S006000

Reexamination Certificate

active

07449260

ABSTRACT:
A fuel cell system includes a fuel cell stack having a first plurality of fuel cells each having an anode, a cathode and an electrolyte disposed therebetween, the first plurality of fuel cells being communicated with a source of hydrogen-containing fuel and oxidant so as to generate an electric current, an oxidant exhaust stream and a hydrogen-containing exhaust stream; the stack further having a second plurality of fuel cells each having an anode, a counter electrode and an electrolyte disposed therebetween, the second plurality of fuel cells being communicated with the electric current and the hydrogen-containing exhaust stream so as to produce a hydrogen rich stream, the first plurality of fuel cells being communicated with the second plurality of fuel cells to receive the hydrogen rich stream as at least a portion of the source of hydrogen-containing fuel.

REFERENCES:
patent: 6280865 (2001-08-01), Eisman et al.
patent: 6399231 (2002-06-01), Donahue et al.
patent: 2006/0029851 (2006-02-01), Santiago et al.
patent: 08321316 (1996-12-01), None
Fuel Cell Hardware, Electrochem Inc., http://www.fuelcell.com/index.asp?PageAction=VIEWCATS&Category=19.

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