Membrane-electrode assembly for polymeric membrane fuel cell

Details Membrane-electrode assembly for polymeric membrane fuel cell Membrane-electrode assembly for polymeric membrane fuel cell

2006-12-05

2006-12-05

Dove, Tracy (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S047000, C429S047000, C204S296000

Reexamination Certificate

active

07144652

ABSTRACT:
The invention is relative to a membrane-electrode assembly for fuel cells, comprising a state of the art ion-exchange polymeric membrane and state of the art gas diffusion electrodes, whose electrochemical properties are modified through the addition of a hydrophilic component localized in correspondence to one or both the electrodic interfaces and/or one or both the external surfaces of the membrane. The modified membrane-electrode assembly is characterized by high protonic conductivity and high efficiency even in the presence of small quantities of carbon monoxide, or of other contaminants contained in the fuel, even at temperatures as low as 100° C., being also suitable for medium temperature (100–160° C.) operation at relative humidity level lower than saturation.

REFERENCES:
patent: 4467019 (1984-08-01), Feigenbaum
patent: 5262250 (1993-11-01), Watanabe
patent: 5766787 (1998-06-01), Watanabe et al.
patent: 6059943 (2000-05-01), Murphy et al.
patent: 6465136 (2002-10-01), Fenton et al.

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