Microtextured catalyst transfer substrate
Assignee3M Innovative Properties Company
InventorsBrian Edward Spiewak, Olester Benson, Jr., Mark Kevitt Debe
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Abstract
A membrane electrode assembly is provided comprising an ion conducting membrane and one or more electrode layers that comprise nanostructured elements, wherein the nanostructured elements are in incomplete contact with the ion conducting membrane. This invention also provides methods to make the membrane electrode assembly of the invention. The membrane electrode assembly of this invention is suitable for use in electrochemical devices, including proton exchange membrane fuel cells, electrolyzers, chlor-alkali separation membranes, and the like.
Claims24
A substrate comprising a polymeric layer having a first surface wherein at least a portion of said first surface is microtextured, said microtextures having a depth of at least 5 .mu.m, said substrate bearing microstructures on at least one microtextured portion of said first surface.
Dependencies are inferred from the claim text.