Method of making an electrolyte-permeable, heterogeneous polymer

Details Method of making an electrolyte-permeable, heterogeneous polymer Method of making an electrolyte-permeable, heterogeneous polymer

1986-01-24

1987-04-21

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

264 42, 264 43, 264105, 264122, 264127, 264344, B29C 4324, B29C 7100, B29D 701

Patent

active

046595287

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: 4370284 (1983-01-01), Solomon
patent: 4568442 (1986-02-01), Goldsmith

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