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Ion-conducting membranes

United States Patent

December 26, 2017
View the Complete Patent at the US Patent & Trademark Office
An anion-conducting polymeric membrane comprises a terpolymer of styrene, vinylbenzyl-R.sub.s and vinylbenzyl-R.sub.x. R.sub.s is a positively charged cyclic amine group. R.sub.x is at least one constituent selected from the group consisting Cl, OH and a reaction product between an OH or Cl and a species other than a simple amine or a cyclic amine. The total weight of the vinylbenzyl-R.sub.x groups is greater than 0.3% of the total weight of the 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 I. (Boca Raton, FL), Sajjad; Syed Dawar (Boca Raton, FL), Gao; Yan (Boca Raton, FL), Liu; Zengcai (Boca Raton, FL), Chen; Qingmei (Savoy, IL)
Dioxide Materials, Inc. (Boca Raton, FL)
15/ 400,775
January 6, 2017
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.