Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2005-12-27
2005-12-27
Aftergut, Jeff H. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C429S006000, C429S006000
Reexamination Certificate
active
06979383
ABSTRACT:
A method is provided for making an edge-sealed fuel cell membrane electrode assembly comprising the steps of: i) providing a suitable membrane electrode assembly lay-up; ii) positioning a suitable annular layer of a thermoplastic; and iii) applying pressure and heat sufficient to melt impregnate the thermoplastic into the fluid transport layer or layers of the membrane electrode assembly lay-up and simultaneously bond the fluid transport layer or layers to the polymer electrolyte membrane of the membrane electrode assembly lay-up. The polymer electrolyte membrane of the membrane electrode assembly lay-up may be perforated in its outer sealing area. Membrane electrode assemblies made according to the method of the present invention are also provided.
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Kado Douglas Willard
Yandrasits Michael Andrew
Ylitalo David Adrian
3M Innovative Properties Company
Aftergut Jeff H.
Dahl Philip Y.
Goff John L.
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