C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 5/22 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) B01D 71/32 (2006.01)
Patent
CA 2494711
A process for preparing multi-layer proton exchange membranes ("PEM's"), and membrane electrode assemblies ("MEA's") that includes the PEM. The process includes (a) providing an article that includes an ionomer membrane adhered to a substrate, the membrane having a surface available for coating; (b) applying a dispersion or solution (e.g., an ionomer dispersion or solution) to the membrane surface; (c) drying the dispersion or solution to form a multi-layer PEM adhered to the substrate; and (d) removing the multi-layer PEM from the substrate. Also featured a multi-layer PEM's and MEA's incorporating such PEM's.
L'invention concerne un procédé d'élaboration de membranes échangeuses de protons multicouche, et des ensembles électrode à membrane équipés de ce type de membrane. Le procédé comprend les étapes suivantes: (a) fourniture d'un article comprenant une membrane ionomère qui adhère à un substrat, ladite membrane ayant une surface disponible aux fins de revêtement; (b) application d'une dispersion ou d'une solution (par exemple, dispersion ou solution ionomère) à la surface de la membrane; (c) séchage de la dispersion ou de la solution pour former une membrane échangeuse de protons multicouche adhérant au substrat; et (d) retrait de cette membrane depuis le substrat. L'invention concerne également de telles membranes et des ensembles électrode à membrane équipés de ce type de membrane.
Hamrock Steven J.
Lee Shawn W.
Lewin John L.
Serim Pinar E.
3m Innovative Properties Company
Smart & Biggar
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