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US 4,175,055 AGranted
Dry mix method for making an electrochemical cell electrode
AssigneeUnited Technologies Corporation
InventorsGlen J. Goller, Vincent J. Petraglia, Joseph R. Salonia
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Abstract
A method for making an electrochemical cell electrode involves depositing a layer of mechanically blended dry catalyzed carbon powder and dry hydrophobic polymer powder on the surface of a substrate by dispersing the mixture of powders as a cloud in a chamber over the substrate and pulling the powder onto the substrate by drawing a vacuum under the substrate. The method is particularly adapted to the high speed manufacture of electrodes.
Claims9
A method for making an electrochemical cell electrode comprising the steps of:
- blending together, in dry form, dry carbon particles and dry hydrophobic polymer particles to form a dry mixture;
- applying a uniform layer of the dry mixture on the surface of a porous electrode substrate with virtually none of the mixture within the pores of the substrate by dispersing the mixture as a cloud of particles in a chamber over said surface of the substrate and pulling the carbon and polymer particles onto said surface by drawing a vacuum under the substrate;
- compacting the applied layer;
- and
- sintering the compacted layer.
2 more elements
Dependencies are inferred from the claim text.