H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/86 (2006.01) B32B 5/18 (2006.01) C08J 9/30 (2006.01) C25B 11/06 (2006.01) H01M 8/10 (2006.01) H01M 8/24 (2006.01)
Patent
CA 2452041
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 electrode assemblies, fuel cells, and fuel cell stacks that incorporate the substrates are also disclosed, as are motor vehicles, and stationary and portable electrical power-generating plants that incorporate the fuel cell stacks.
Ebbrell Guy
Gaffney John
Ballard Power Systems Inc.
Bdf Ip Holdings Ltd.
Borden Ladner Gervais Llp
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