Gas diffusion composite electrode having novel hydrophilic layer

Details Gas diffusion composite electrode having novel hydrophilic layer Gas diffusion composite electrode having novel hydrophilic layer

1984-12-04

1986-04-08

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204291, 204292, 204294, 429 41, 429 42, C25B 1103

Patent

active

045811164

ABSTRACT:
A gas diffusion composite electrode is disclosed which is suitable for use in combination with an electrically conductive current collector. The electrode comprises an electrochemically active, porous and heterogeneous layer containing (1) an interconnected, hydrophilic island material comprising a blend of a major amount of an electrically conductive, particulate material, such as carbon black, in combination with an electrochemically active catalyst, and a minor amount of a hydrophobic polymer in combination with (2) a hydrophobic matrix material consisting essentially of a hydrophobic polymer rendered substantially porous by removal of a pore-forming ingredient. Methods of preparing the heterogeneous layer and the composite electrode are also disclosed.

REFERENCES:
patent: 4058482 (1977-11-01), Baris et al.
patent: 4150076 (1979-04-01), Baris et al.
patent: 4317789 (1982-03-01), Groult
patent: 4370284 (1983-01-01), Solomon
patent: 4459197 (1984-07-01), Solomon

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