Fuel cell electrode and method of manufacture of sheet material

Details Fuel cell electrode and method of manufacture of sheet material Fuel cell electrode and method of manufacture of sheet material

1977-05-23

1979-04-17

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

264127, 429 42, B29D 2700

Patent

active

041500768

ABSTRACT:
A sheet material, principally comprised of a polymer such as polytetrafluoroethylene, having characteristics which permit its use in a fuel cell electrode is formed from co-agglomerates of the polymer and a pore former. In a fuel cell electrode application, the polymer-pore former agglomerates are themselves caused to co-agglomerate with a catalyst, the resulting co-agglomerates are formed into a layer and the pore former is leached from the layer so as to produce a structure having gas channels only in the polymer portions thereof. Agglomeration of the pore former and polymer particles is permitted through first imparting a positive charge to the pore former particles. The gas permeable catalyst layer will be bonded to a support plate to define a fuel cell electrode.

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