US2002161061A1PendingUtilityA1
Alpha, beta, beta-trifluorostyrene-based composite membranes
Priority: Sep 21, 1993Filed: Jun 25, 2002Published: Oct 31, 2002
Est. expirySep 21, 2013(expired)· nominal 20-yr term from priority
H01M 50/491H01M 50/414B01D 71/28B01D 69/12C08F 212/20C08F 212/30Y02E60/10Y02E60/50C08F 12/30H01M 8/1081G01N 27/40H01M 8/1023B01D 71/32C08J 5/225H01M 8/1039Y02P70/50C08J 2323/06C08J 5/2281C08J 2327/18C08F 8/12H01M 8/106B01D 69/02G01N 27/4074G01N 27/4073C08F 14/185
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Abstract
A membrane electrode assembly comprises first and second electrodes and a composite membrane interposed therebetween. The composite membrane comprises a porous substrate impregnated with a polymeric composition comprising polymerized α,β,β-trifluorostyrene monomeric units. Where the polymeric composition includes ion-exchange moieties, the resultant membrane electrode assembly is useful in electrochemical applications, particularly as a membrane electrode assembly in electrochemical fuel cells.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A membrane electrode assembly comprising first and second electrodes and a composite membrane interposed therebetween, wherein the composite membrane comprises a porous substrate impregnated with a polymeric composition comprising polymerized α,β,β-trifluorostyrene monomeric units.Join the waitlist — get patent alerts
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