초록 ▼

Fuel cell electrodes of uniform quality are made on a continuous basis using screen printing. A wet floc is first made by floccing a co-suspension of carbon and hydrophobic polymer. The floc is dried, reduced to a fine powder, and re-suspended in an inking vehicle. The ink is then screen printed ont

Fuel cell electrodes of uniform quality are made on a continuous basis using screen printing. A wet floc is first made by floccing a co-suspension of carbon and hydrophobic polymer. The floc is dried, reduced to a fine powder, and re-suspended in an inking vehicle. The ink is then screen printed onto a porous substrate and the inking vehicle is removed such as by heating. The layer is compacted, sintered, and then catalyzed such as with platinum.

대표청구항 ▼

A method for making an electrochemical cell electrode comprising the steps of: floccing a co-suspension of carbon particles and hydrophobic fluorocarbon polymer particles; drying the floc so produced and reducing it to a powder; resuspending the floc powder in an inking vehicle to form an ink; scree

A method for making an electrochemical cell electrode comprising the steps of: floccing a co-suspension of carbon particles and hydrophobic fluorocarbon polymer particles; drying the floc so produced and reducing it to a powder; resuspending the floc powder in an inking vehicle to form an ink; screen printing the ink onto a porous substrate to form a layer; drying the layer to remove the inking vehicle; compacting the layer; sintering the compacted layer; and catalyzing the layer.