Fuel cell electrode, fuel cell, and manufacturing methods...

Details Fuel cell electrode, fuel cell, and manufacturing methods... Fuel cell electrode, fuel cell, and manufacturing methods...

2004-07-13

2010-12-28

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

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

Electrode structure or composition

C429S530000

Reexamination Certificate

active

07858267

ABSTRACT:
A fuel cell electrode which can improve the catalyst utilization rate by having the catalyst component supported at a high density and high dispersion is provided. An aqueous solution containing chloroplatinic acid and aniline is prepared. For an electrode diffusion layer, a carbon paper is soaked in a Teflon® dispersion solution and then dried. One side of the electrode diffusion layer is placed in contact with the liquid surface of the solution, and a counter-electrode made of graphite is provided in the solution. A constant electrical current is applied between them, with the electrode diffusion layer side as the positive electrode. As a result, aniline is oxidatively polymerized by electrochemical means, and a uniform layer of platinum-containing polyaniline is formed on the electrode diffusion layer surface. The platinum in the polyaniline is reduced, and this is washed with pure water and dried to make the electrode. Two of these electrodes, with the catalytic layer of the platinum-containing polyaniline on the inside, are placed against both sides of Nafion® to create a small fuel cell.

REFERENCES:
patent: 4472488 (1984-09-01), Maxfield et al.
patent: 4877694 (1989-10-01), Solomon et al.
patent: 4960761 (1990-10-01), Yodice
patent: 5346780 (1994-09-01), Suzuki
patent: 5824434 (1998-10-01), Kawakami et al.
patent: 6117581 (2000-09-01), Shelef
patent: 6479181 (2002-11-01), Finkelshtain et al.
patent: 6579639 (2003-06-01), Gyoten et al.
patent: 61-40320 (1986-02-01), None
patent: 3-115323 (1991-05-01), None
patent: 3158490 (1991-07-01), None
patent: 2000-106203 (2000-04-01), None
patent: 2002110190 (2002-04-01), None
patent: 2003203642 (2003-07-01), None
Patent Abstracts of JP2000-106203 published on Apr. 11, 2000.

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