Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1998-03-26
2000-06-27
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 30, 429 34, H01M 810
Patent
active
06080503&
ABSTRACT:
An electrochemical cell stack comprises a plurality of membrane electrode assemblies interposed between pairs of separator plates. The stack comprises adhesively bonded layers. Preferably each membrane electrode assembly is adhesively bonded to the adjacent pair of separator plates. The adhesive bond between the plate and membrane electrode assembly preferably provides a substantially gas and liquid-tight seal around the perimeter of the electrochemically active area of the membrane electrode assembly and around any fluid manifold openings formed therein. Alternatively, or in addition, adjoining pairs of separator plates in an electrochemical cell stack may be adhesively bonded together. Such pairs of adhesively bonded plates may define cooling spaces between neighboring cells. Stacks comprising a plurality of individual cell modules may be formed, each module comprising a membrane electrode assembly bonded to a pair of separator plates.
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International Search Report issued by British Patent Office corresponding to a foreign counterpart Great Britain patent application Serial No. 9806696.2 dated May 20, 1998.
Einhart Johann
Schmid Ottmar
Ballard Power Systems Inc.
Nuzzolillo Maria
Wills Monique
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