Composite proton-conducting membrane

Patent metadata

Field	Value
Publication number	US-11196072-B2
Application number	US-201916453575-A
Country	US
Kind code	B2
Filing date	Jun 26, 2019
Priority date	Jun 26, 2018
Publication date	Dec 7, 2021
Grant date	Dec 7, 2021

Abstract

A composite proton-conducting membrane comprising an inorganic polymer whose pores are filled with an organic polymer, wherein both the inorganic polymer and the organic polymer are proton conductors and wherein said composite proton-conducting membrane can operate in the absence of solvents, such as water.

First claim

We claim:

1. A composite proton-conducting membrane comprising 70 to 90 wt. % of an inorganic polymer whose pores are filled with 30 to 10 wt. % of an organic polymer;
wherein the inorganic polymer is a dry proton conductor;
wherein the organic polymer is a dry proton conductor;
wherein both the inorganic polymer and the organic polymer individually operate from room temperature to about 220° C. with no water, and
wherein said inorganic polymer and said organic polymer each conducts proton with no added solvent.

2. The composite proton-conducting membrane of claim 1 , wherein said added solvent is water.

3. The composite proton-conducting membrane of claim 1 , where said inorganic polymer comprises ceramic forms of pyrophosphate anion.

4. The composite proton-conducting membrane of claim 1 , where said organic polymer comprises polyphenylene with one or more amine phosphate moieties.

5. The composite proton-conducting membrane of claim 1 , wherein said composite proton-conducting membrane does not lose phosphate when exposed to water.

6. The composite proton-conducting membrane of claim 1 , wherein the organic polymer is a quaternary ammonium-QA-biphosphate ion-pair-coordinated polyphenylene.

7. The composite proton-conducting membrane of claim 1 , wherein the inorganic polymer is a ceramic, inorganic polymer In 0.1 Sn 0.9 P 2 O 7 .

8. The composite proton-conducting membrane of claim 1 , wherein said membrane comprises a homogeneous blend of the inorganic polymer and the organic polymer.

9. The composite proton-conducting membrane of claim 8 , wherein said inorganic polymer comprises In 0.1 Sn 0.9 P 2 O 7 ; and said organic polymer comprises quaternary ammonium-QA-biphosphate ion-pair-coordinated polyphenylene.

10. The composite proton-conducting membrane according to claim 9 , wherein the inorganic polymer is In 0.1 Sn 0.9 P 2 O 7 .

11. The composite proton-conducting membrane according to claim 1 , wherein the inorganic polymer comprises a form of tin (IV) pyrophosphate(-IV) substituted with trivalent ions.

12. The composite proton-conducting membrane according to claim 1 , wherein the inorganic polymer comprises a form of tin (IV) pyrophosphate(-IV) substituted with indium (III) or aluminum (III) trivalent ions.

Assignees

• Univ Arizona

Inventors

• Gervasio Dominic Francis
• Li Peiwen
• Xu Xinhai
• Zhang Shuyang
• Wang Xiaoxin

Classifications

• H01M8/0258

  characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant · CPC title

• H01M8/04074

  Heat exchange unit structures specially adapted for fuel cell · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M4/92

  Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence) · CPC title

• F04B43/00

  Machines, pumps, or pumping installations having flexible working members (pumps or pumping installations specially adapted for elastic fluids F04B45/00) · CPC title