Gas diffusion electrode

Details Gas diffusion electrode Gas diffusion electrode

1996-06-25

1997-10-14

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

429 33, 429 42, H01M 492, H01M 810

Patent

active

056770740

ABSTRACT:
A gas diffusion electrode for an electrochemical cell and a fuel cell employing the electrode are disclosed. The electrode includes a porous body in contact with a catalyst layer comprising (i) a catalyst dispersed on the surface of a carbon support; (ii) a water-insoluble sulfonated polystyrene, poly(.alpha.-methylstyrene) or SEBS block copolymer; and (iii) a nonionic fluorocarbon polymer. The fuel cell includes two of the foregoing electrodes and a membrane of a proton-conducting polymer between the electrodes. It also includes an inlet for a gaseous fuel, an inlet for an oxygen-containing gas, and an outlet for reaction products.

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