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US 2020/0343569 A1Published application
Proton exchange membrane with enhanced chemical stability and method of preparing thereof
AssigneeTianjin University
InventorsYan YIN, Junfeng ZHANG, Xin LIU, Michael Dominic GUIVER
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Abstract
polymeric ion-conducting membrane with an enhanced stability against attacks of free radicals for exteding its service time, which comprises (a) a polymer matrix, and (b) a redox stabilizer, where the redox stabilizer is attached to the polymer matrix by chemical or ligand bonding, or the redox stabilizer is physically mixed with the polymer matrix.
Claims16
A polymeric ion-conducting membrane with an enhanced stability against attacks of free radicals, comprising:
- (a) a polymer matrix, and
- (b) a redox stabilizer
- wherein said redox stabilizer is attached to said polymer matrix by chemical or ligand bonding, or said redox stabilizer is physically mixed with said polymer matrix.
A method of making a proton exchange membrane, comprising:
- (a) preparing a polymer matrix;
- (b) adding an amount of a redox stabilizer to said polymer matrix in a predetermined mass ratio to form a membrane formulation or, alternatively, attaching an amount of a redox stabilizer directly to said polymer matrix in a predetermined mass ratio by ligand or chemical bonding to from a modified polymer matrix;
- (c) dissolving said membrane formulation or modified polymer matrix in a solvent to afford a membrane casting solution;
- (d) casting said membrane casting solution and allowing the solvent evaporating therefrom to form a membrane;
- and
- (e) conducting acidification of said membrane to obtain a proton exchange membrane.
3 more elements
Dependencies are inferred from the claim text.