Ion-conducting membranes
AssigneeDioxide Materials, Inc.
InventorsRichard I. Masel, Syed Dawar Sajjad, Qingmei Chen
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Abstract
An anion-conducting polymeric membrane comprises vinylbenzyl-Rs and a substituted ethene. Rs is a positively charged cyclic amine group. The total weight of the vinylbenzyl-Rs groups is greater than 15% 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.
Claims10
An anion-conducting polymeric membrane comprising a polymer comprising the reaction products of vinylbenzyl-Rs, a substituted or unsubstituted ethylene having the structural formula:
- and styrene, wherein:
- (a) R1-R4 are each independently selected from hydrogen, halogens, linear alkyls, branched alkyls, cyclic alkyls, and heteroalkyls,
- (b) the total weight of the substituted or unsubstituted ethylene is at least 3% of the weight of the polymer,
- (c) Rs is a positively charged cyclic amine group, and
- (d) the total weight of the vinylbenzyl-Rs is at least 15% of the weight of the polymer.
Dependencies are inferred from the claim text.