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Composite fuel cell membranes

United States Patent

*** EXPIRED ***
August 5, 1997
View the Complete Patent at the US Patent & Trademark Office
A bilayer or trilayer composite ion exchange membrane suitable for use in a fuel cell. The composite membrane has a high equivalent weight thick layer in order to provide sufficient strength and low equivalent weight surface layers for improved electrical performance in a fuel cell. In use, the composite membrane is provided with electrode surface layers. The composite membrane can be composed of a sulfonic fluoropolymer in both core and surface layers.
Plowman; Keith R. (Lake Jackson, TX), Rehg; Timothy J. (Lake Jackson, TX), Davis; Larry W. (West Columbia, TX), Carl; William P. (Marble Falls, TX), Cisar; Alan J. (Cypress, TX), Eastland; Charles S. (West Columbia, TX)
The Dow Chemical Company (Midland, MI)
08/ 497,438
June 30, 1995
STATEMENT OF GOVERNMENT INTEREST This invention was made with the support of the United States Government under Contract DE-AC02-90CH10435 awarded by the Department of Energy. The Government has certain rights to this invention.