Method of operating fuel cell

Details Method of operating fuel cell Method of operating fuel cell

2007-10-02

2007-10-02

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S010000, C429S006000

Reexamination Certificate

active

11344594

ABSTRACT:
A method of operating a fuel cell including a fuel electrode, an oxidant electrode, and an electrolyte layer having hydrogen ion conductivity sandwiched between the fuel electrode and the oxidant electrode, so that the fuel cell generates electricity as a result of an electrochemical reaction between a fuel and an oxidant. Each time the fuel cell is started from a non-operating condition, the fuel is supplied to the fuel electrode with the fuel electrode and the oxidant electrode electrically interconnected to produce hydrogen at the oxidant electrode by provoking electrochemical reactions expressed by the chemical equations H2→2H++2e−and 2H++2e−→H2at the fuel electrode and the oxidant electrode, respectively, reducing oxides on the oxidant electrode, using the hydrogen produced at the oxidant electrode. Then, the oxidant is supplied to the oxidant electrode to begin normal continuing operation of the fuel cell.

REFERENCES:
patent: 2005/0271911 (2005-12-01), Kuriki et al.
patent: 2003-115318 (2003-04-01), None
patent: 2005-268091 (2005-09-01), None
Uribe, F. et al.; “A study of polymer electrolyte fuel cell performance at high voltages. Dependence on cathode catalyst layer composition and on voltage conditioning”,Electrochimica Acta, 47 (2002) pp. 3799-3806.

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