High polymer electrolyte fuel cell and electrolyte...

Details High polymer electrolyte fuel cell and electrolyte... High polymer electrolyte fuel cell and electrolyte...

2005-01-11

2005-01-11

Ryan, Patrick (Department: 1745)

Metal working

Method of mechanical manufacture

Electrical device making

C029S623400, C029S623500, C429S006000, C429S006000, C429S006000, C427S115000

Reexamination Certificate

active

06840969

ABSTRACT:
An electrolyte membrane-gasket assembly for a fuel cell, including a polymer electrolyte membrane and a gasket, made of a seal material, covering the peripheral portion of the electrolyte membrane, in which the electrolyte membrane has a sequence of a plurality of through-holes in the peripheral portion, and a portion of the gasket covering one surface of the electrolyte membrane and a portion covering the other surface are connected to each other through the through-holes of the electrolyte membrane. This assembly provides a polymer electrolyte fuel cell free from gas cross leakage caused by a detachment of the gasket from the polymer electrolyte membrane. It is preferable to further include catalyst layers carried on both surfaces of the polymer electrolyte membrane, respectively, and protective films covering, respectively, sections spanning from the peripheral portion of each of the catalyst layers to the peripheral portion of the polymer electrolyte membrane.

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