Catalyst support materials for fuel cells

Patent metadata

Field	Value
Publication number	US-11757104-B2
Application number	US-202217734558-A
Country	US
Kind code	B2
Filing date	May 2, 2022
Priority date	Oct 2, 2019
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A catalyst support material for a proton exchange membrane fuel cell (PEMFC). The catalyst support material includes a metal material of an at least partially oxidized form of TiNb3O6 reactive with H3O+, HF and/or SO3− to form reaction products in which the metal material of the at least partially oxidized form of TiNb3O6 accounts for a stable molar percentage of the reaction products.

First claim

What is claimed is:

1. A catalyst support material for a proton exchange membrane fuel cell (PEMFC), the catalyst support material comprising:
a metal material of an at least partially oxidized form of TiNb 3 O 6 reactive with H 3 O + , HF and/or SO 3 − to form reaction products in which the metal material of the at least partially oxidized form of TiNb 3 O 6 accounts for a stable molar percentage of the reaction products.

2. The catalyst support material of claim 1 , wherein the stable molar percentage is greater than or equal to 80 percent.

3. The catalyst support material of claim 1 , wherein the metal material includes a mixture of an at least partially oxidized form of SnMo 4 O 6 and the at least partially oxidized form of TiNb 3 O 6 .

4. The catalyst support material of claim 1 , wherein the metal material is a spherical metal material.

5. The catalyst support material of claim 1 , wherein the metal material is a planar metal material.

6. The catalyst support material of claim 1 , wherein the metal material is doped with a doping material at an atomic percentage, and the doping material is selected from the group consisting of nitrogen, carbon, fluorine, and a combination thereof.

7. The catalyst support material of claim 6 , wherein the atomic percentage is in the range of 1 to 25 atomic percent.

8. The catalyst support material of claim 1 , wherein the metal material is mixed with a conducting material.

9. The catalyst support material of claim 8 , wherein the conducting material is carbon.

10. The catalyst support material of claim 8 , wherein the conducting material is included in the range of 5 to 50 mol percent with respect to the mixture of the metal material and the conducting material.

11. A proton exchange membrane fuel cell (PEMFC) comprising:
a catalyst support material formed of a metal material of an at least partially oxidized form of TiNb 3 O 6 reactive with H 3 O + , HF and/or SO 3 − to form reaction products in which the metal material of an at least partially oxidized form of TiNb 3 O 6 accounts for a stable molar percentage of the reaction products; and
a catalyst supported on the catalyst support material.

12. The PEMFC of claim 11 , wherein the catalyst support material includes one or more decomposed species to aid in electron transport through the PEMFC.

13. The PEMFC of claim 12 , wherein the one or more decomposed species forms a solid-electrolyte interface (SEI).

14. The PEMFC of claim 11 , wherein the stable molar percentage is greater than or equal to 80 percent.

15. The PEMFC of claim 11 , wherein the catalyst support material is a core catalyst support material upon which a shell of a continuous film of the catalyst is supported.

16. The PEMFC of claim 11 , wherein the catalyst support material is a planar catalyst support material upon which a continuous film of the catalyst is supported.

17. The PEMFC of claim 11 , wherein the metal material is doped with a doping material at an atomic percent, and the doping material is selected from the group consisting of nitrogen, carbon, fluorine, and a combination thereof.

18. The PEMFC of claim 11 , wherein the metal material is mixed with a conducting material.

19. A proton exchange membrane fuel cell (PEMFC) comprising:
a catalyst support material formed of a metal material of an at least partially oxidized form of TiNb 3 O 6 reactive with H 3 O + , HF and/or SO 3 − to form reaction products in which the metal material of an at least partially oxidized form of TiNb 3 O 6 accounts for a stable molar percentage of the reaction products; and
a catalyst film supported on the catalyst support material.

20. The PEMFC of claim 19 , wherein the catalyst support material is a planar catalyst support material.

Assignees

• Bosch Gmbh Robert

Inventors

• Kim Soo
• Mailoa Jonathan
• Kornbluth Mordechai
• Cheng Lei
• Samsonidze Georgy
• Kozinsky Boris
• Craig Nathan

Classifications

• H01M4/8657 Primary

  layered · CPC title

• H01M4/9033 Primary

  Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites · CPC title

• H01M4/925

  supported on carriers, e.g. powder carriers · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• Y02E60/50

  Fuel cells · CPC title