초록 ▼

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 th

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.

대표청구항 ▼

[ What is claimed is:] [1.] An electrochemical MEA comprising:an ion conductive membrane, said membrane having a first and second major surface;catalyst adjacent to said first and second major surfaces; anda porous, electrically conductive polymer film adjacent to said ion conductive membrane, said

[ What is claimed is:] [1.] An electrochemical MEA comprising:an ion conductive membrane, said membrane having a first and second major surface;catalyst adjacent to said first and second major surfaces; anda porous, electrically conductive polymer film adjacent to said ion conductive membrane, said film comprising a polymer matrix and about 45 to about 98 percent by weight electrically conductive particles embedded within said polymer matrix; wherein the Gurly value of said polymer film is less than about 100 s/50 cc.