Application of an ionomer layer to a substrate and products related thereto

Abstract From the Canadian patent

A disclosed method for coating a substrate with an ionomer applies the ionomer as a component of a stable foam then dries the applied, foam layer. The substrate to be so coated in particular embodiments, is an, electrode substrate with or without a catalyst layer applied thereon. In another, embodiment, the substrate is an ion-exchange membrane. In yet more particular embodiments, the substrate is suitable for use in an electrochemical, fuel cell. Also disclosed are products made by the disclosed methods namely, ionomer-coated substrates, including ionomer-coated electrode substrates and electrodes. The foam layer may also comprise catalyst powder to form a catalyst layer. Membrane …