Internally gas regulated fuel cell

Details Internally gas regulated fuel cell Internally gas regulated fuel cell

2011-05-19

2011-10-18

Gilliam, Barbara (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

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

Means for distributing, storing, or preventing fluid movement

C429S408000, C429S457000, C429S458000

Reexamination Certificate

active

08039170

ABSTRACT:
A fuel cell includes a membrane electrode assembly (MEA) and at least one bipolar plate having an anode-side gas distributor structure for distributing anode reactants, a cathode-side gas distributor structure for distributing cathode reactants, and a guide passage structure for distributing a cooling medium. At least one of the anode-side gas distributor structure and the cathode-side gas distributor structure is divided into at least a first field and a second field, each of the first and second fields having an entry port and an exit port for the reactants. In addition, a method for such a fuel cell includes passing a reactant into an entry port of the first field and out of an exit port of the first field, mixing the reactant with a fresh reactant so as to form a mixture, and passing the mixture into the entry port of the second field.

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Translation in English of Mizutani S. et al. (“Development of 1 Kw Class PEFC Stack System with Function of Variable Gas Flow Channel”, Proceedings of the Battery Symposium in Japan, vol. 1D17, Oct. 2, 2002, 519-519, XP008071986.).

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