Membrane electrode assemblies

Details Membrane electrode assemblies Membrane electrode assemblies

1997-10-10

1999-06-08

Bell, Bruce F.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429 40, 429 41, 204282, 204283, 204296, 4283044, 4283055, 4283066, 4283084, 4283111, 4283157, H01M 486

Patent

active

059103787

ABSTRACT:
Membrane electrode assemblies are described that include an ion conductive membrane a catalyst adjacent to the major surfaces of the ion conductive membrane and a porous particle filled polymer membrane adjacent to the ion conductive membrane. The catalyst can be disposed on the major surfaces of the ion conductive membrane. Preferably, the catalyst is disposed in nanostructures. The polymer film serving as the electrode backing layer preferably is processed by heating the particle loaded porous film to a temperature within about 20 degrees of the melting point of the polymer to decrease the Gurley value and the electrical resistivity. The MEAs can be produced in a continuous roll process. The MEAs can be used to produce fuel cells, electrolyzers and electrochemical reactors.

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