Dry fuel cell electrodes and methods of manufacture
AssigneeHyzon Motors Inc.
InventorRajesh Bashyam
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Abstract
Ways of making electrodes and electrodes produced thereby are provided. Dry blending of a powder mixture including a catalyst, an ionomer, and a polyether forms a blended mixture, which can be comminuted to obtain a desired particle size. A slurry of the blended mixture is formed with an aqueous medium and the slurry is coated onto a substrate to form a coated substrate. The coating can be transferred to another substrate or material for use as an electrode and/or the substrate of the coated substrate can form part of a structure, such as a membrane electrode assembly for use in a fuel cell.
Claims20
A method of making an electrode, comprising:
- dry blending a powder mixture including a catalyst, an ionomer, and a polyether to form a blended mixture;
- forming a slurry of the blended mixture with a liquid carrier;
- coating the slurry onto a substrate to form a coated substrate;
- and
- drying the coating of the coated substrate to remove the liquid carrier and form the electrode, wherein the electrode includes the catalyst, the ionomer, and the polyether.
Dependencies are inferred from the claim text.