Reversible fuel cell power plant

Details Reversible fuel cell power plant Reversible fuel cell power plant

2005-02-22

2005-02-22

Barr, Michael (Department: 1746)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S010000, C429S010000, C429S010000, C429S010000, C429S006000, C429S006000, C429S006000, C429S006000, C429S006000, C429S006000, C320S101000

Reexamination Certificate

active

06858337

ABSTRACT:
The invention is a reversible fuel cell power plant (10). A reactant switch-over assembly (48) is secured between a reducing fluid fuel source (30), an oxygen containing oxidant source (24), and first and second flow fields (20) (22) of a fuel cell (12). The switch-over assembly (48) first directs a reducing fluid fuel stream to flow into the first flow field (20) while it simultaneously directs the oxygen containing oxidant stream to flow into the second flow field (22). Then, after a first half of a useful life span of the fuel cell (12) but before a final one quarter of the useful life span, the switch-over assembly (48) directs the reducing fluid fuel stream to flow into the second flow field (22) while it simultaneously directs the oxygen containing oxidant stream to flow into the first flow field (20).

REFERENCES:
patent: 3870565 (1975-03-01), Bonnemay et al.
patent: 6024848 (2000-02-01), Dufner et al.
patent: 6322915 (2001-11-01), Collins et al.
patent: 6432566 (2002-08-01), Condit et al.
patent: 6601402 (2003-08-01), Dunham

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