Composite ion-conducting membrane
AssigneeJohnson Matthey Hydrogen Technologies Limited
InventorsDharshini Chryshantha FONGALLAND, Melissa Hoang Lan NOVY, Michael Ian PETCH, Jhonny Albino RODRIGUES RAMOS, Michael Andrew YANDRASITS
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Abstract
The present invention provides an ion-conducting membrane and its method of manufacture, the membrane comprising: ⋅(a) an ion-conducting polymer; and ⋅(b) particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups.
Claims23
An ion-conducting membrane comprising:
- (a) an ion-conducting polymer;
- and
- (b) particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups.
An ion-conducting membrane according to any one of the preceding claims, wherein the ion-conducting polymer is a proton conducting polymer.
An ion-conducting membrane according to any one of the preceding claims, wherein the proton conducting polymer is a perfluorinated sulfonic acid ionomer.
An ion-conducting membrane according to any one of the preceding claims, wherein the non-ionically conducting heterocyclic-based polymer is selected from polybenzimidazoles, poly(pyridine)s, poly(pyrimidine)s, polybenzthiazoles, polyoxadiazoles, polyquinolines, polyquinoxalines, polythiadiazoles, polytriazoles, polyoxazoles, polybenzoxazoles, polythiazoles, polypyrazoles and derivatives thereof.
An ion-conducting membrane according to any one of the preceding claims, further comprising:
- (c) a reinforcing layer comprising a porous polymer material, wherein the ion-conducting polymer is impregnated within the porous polymer material.
Use of particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups for preventing radical degradation of an ion-conducting membrane.
A method of preventing radical degradation of an ion-conducting membrane, the method comprising using an ion-conducting membrane which comprises particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups.
A process of preparing particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups, the process comprising precipitation from solution by a polymer microfluidics process.
Use of particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups for increasing the temperature at which an ion-conducting membrane exhibits a peak tan δ.
A method of increasing the temperature at which an ion-conducting membrane exhibits a peak tan δ, the method comprising using an ion-conducting membrane which comprises particles of a non-ionically conducting heterocyclic-based polymer comprising basic functional groups.
Dependencies are inferred from the claim text.