US 7,601,759 B2
	Water insoluble additive for improving conductivity of an ion exchange membrane
Sean M. MacKinnon, Burnaby (Canada); Timothy J. Peckham, Richmond (Canada); and Charles Stone, West Vancouver (Canada)
Assigned to BDF IP Holdings Ltd., Vancouver, BC (Canada)
Filed on Oct. 08, 2004, as Appl. No. 10/962,184.
Claims priority of provisional application 60/510664, filed on Oct. 10, 2003.
Prior Publication US 2005/0112439 A1, May 26, 2005
Int. Cl. C08J 5/22 (2006.01); H01M 8/10 (2006.01)

U.S. Cl. 521—27  [429/33]

12 Claims

1. A membrane electrode assembly comprising an ion-exchange membrane which comprises an ionomer and a water insoluble additive, the water insoluble additive comprising a metal oxide cross-linked matrix having phosphoric acid groups covalently attached to the metal atoms through linkers, and wherein the metal is silicon, and the matrix is siloxane matrix.