Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-01-04
2005-01-04
Yuan, Dah-Wei (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S010000, C429S006000
Reexamination Certificate
active
06838199
ABSTRACT:
The invention is a start up system and method for a fuel cell power plant (10) using a purging of the cathode flow field (38) with a hydrogen rich reducing fluid fuel to minimize corrosion of the cathode electrode (16). The method for starting up the shut down fuel cell power plant (10) includes the steps of: a. purging the cathode flow field (38) with the reducing fluid fuel; b. then, directing the reducing fluid fuel to flow through an anode flow field (28); c. next, terminating flow of the fuel through the cathode flow field (38) and directing an oxygen containing oxidant to flow through the cathode flow field (38); and, d. finally, connecting a primary load (70) to the fuel cell (12) so that electrical current flows from the fuel cell (12) to the primary load (70).
REFERENCES:
patent: 6024848 (2000-02-01), Dufner et al.
patent: 6432566 (2002-08-01), Condit et al.
patent: 20020132146 (2002-09-01), Mund
patent: 20030134165 (2003-07-01), Reiser et al.
Balliet Ryan J.
Patterson Timothy W.
Perry Michael L.
Reiser Carl A.
Chisholm, Jr. Malcolm J.
UTC Fuel Cells LLC
Yuan Dah-Wei
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