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Ion-conducting membranes

United States Patent

June 21, 2016
View the Complete Patent at the US Patent & Trademark Office
An ion conducting polymeric composition mixture comprises a copolymer of styrene and vinylbenzyl-R.sub.s. R.sub.s is selected from the group consisting of imidazoliums and pyridiniums. The composition contains 10%-90% by weight of vinylbenzyl-R.sub.s. The composition can further comprise a polyolefin comprising substituted polyolefins, a polymer comprising cyclic amine groups, a polymer comprising at least one of a phenylene group and a phenyl group, a polyamide, and/or the reaction product of a constituent having two carbon-carbon double bonds. The composition can be in the form of a membrane. In a preferred embodiment, the membrane is a Helper Membrane that increases the faradaic efficiency of an electrochemical cell into which the membrane is incorporated, and also allows product formation at lower voltages than in cells without the Helper Membrane.
Masel; Richard L. (Boca Raton, FL), Chen; Qingmei (Savoy, IL), Liu; Zengcai (Savoy, IL), Kutz; Robert (Champaign, IL)
Dioxide Materials, Inc. (Boca Raton, FL)
14/ 704,935
May 5, 2015
STATEMENT OF GOVERNMENT INTEREST This invention was made, at least in part, with U.S. government support under ARPA-E Contract No. DE-AR-0000345 and the Department of Energy under Contract No. DE-SC0004453. The government has certain rights in the invention.