Direct oxidation fuel cell

Details Direct oxidation fuel cell Direct oxidation fuel cell

2008-05-07

2011-12-13

Rhee, Jane (Department: 1726)

Chemistry: electrical current producing apparatus, product, and

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

Grouping of fuel cells into stack or module

C429S400000, C429S456000

Reexamination Certificate

active

08076040

ABSTRACT:
A direct oxidation fuel cell of this invention has at least one unit cell including: a membrane-electrode assembly comprising an electrolyte membrane sandwiched between an anode and a cathode, each of the anode and the cathode including a catalyst layer and a diffusion layer; an anode-side separator with a fuel flow channel for supplying a fuel to the anode; and a cathode-side separator with an oxidant flow channel for supplying an oxidant containing oxygen gas to the cathode. The fuel flow channel and the oxidant flow channel are so structured that the concentration of the oxygen gas in the oxidant flow channel is higher at a part opposing an upstream part of the fuel flow channel than at a part opposing a downstream part of the fuel flow channel.

REFERENCES:
patent: 2002-184428 (2002-06-01), None
patent: 2006-202570 (2006-08-01), None

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