Mesoporous carbon materials comprising bifunctional catalysts

Patent metadata

Field	Value
Publication number	US-9680159-B2
Application number	US-201414543587-A
Country	US
Kind code	B2
Filing date	Nov 17, 2014
Priority date	Mar 12, 2010
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

The present application is directed to mesoporous carbon materials comprising bi-functional catalysts. The mesoporous carbon materials find utility in any number of electrical devices, for example, in lithium-air batteries. Methods for making the disclosed carbon materials, and devices comprising the same, are also disclosed.

First claim

The invention claimed is:

1. A carbon material comprising at least 1000 ppm of a bi-functional catalyst and a pore structure comprising pores, the pore structure comprising a total pore volume of at least 1 cc/g, wherein at least 50% of the total pore volume resides in pores having a pore size ranging from 2 nm to 50 nm as determined from N 2 sorption derived DFT, wherein the carbon material comprises a different wetting characteristic on an inner surface of the pores compared to an outer surface of the pores.

2. The carbon material of claim 1 , wherein at least 50% of the total pore volume resides in pores having a pore size ranging from 10 nm to 50 nm as determined from N 2 sorption derived DFT.

3. The carbon material of claim 1 , wherein at least 50% of the total pore volume resides in pores having a pore size ranging from 15 nm to 30 nm as determined from N 2 sorption derived DFT.

4. The carbon material of claim 1 , wherein at least 90% of the total pore volume resides in pores having a pore size ranging from 2 nm to 50 nm as determined from N 2 sorption derived DFT.

5. The carbon material of claim 1 , wherein at least 90% of the total pore volume resides in pores having a pore size ranging from 10 nm to 50 nm as determined from N 2 sorption derived DFT.

6. The carbon material of claim 1 , wherein the carbon material comprises at least 5000 ppm of the bi-functional catalyst.

7. The carbon material of claim 1 , wherein the carbon material comprises a specific surface area of greater than 500 m 2 g as determined from N 2 sorption derived DFT.

8. The carbon material of claim 1 , wherein the bi-functional catalyst comprises iron, nickel, cobalt, manganese, copper, ruthenium, rhodium, palladium, osmium, iridium, gold, hafnium, platinum, titanium, rhenium, tantalum, thallium, vanadium, niobium, scandium, chromium, gallium, zirconium, molybdenum or combinations or alloys thereof.

9. The carbon material of claim 1 , wherein the bi-functional catalyst comprises a nickel oxide, an iron oxide or a manganese oxide.

10. The carbon material of claim 1 , wherein the bi-functional catalyst comprises tungsten carbide.

11. The carbon material of claim 1 , wherein the carbon material comprises less than 500 ppm of all other elements, excluding the bi-functional catalyst, having atomic numbers ranging from 11 to 92, as measured by proton induced x-ray emission.

12. The carbon material of claim 1 , wherein an inner surface of the pores has a higher affinity for a solvent capable of solvating lithium ion than an outer surface of the pores.

13. The carbon material of claim 12 , wherein the solvent comprises acetonitrile, propylene carbonate, dimethyl carbonate, ethylene carbonate, diethyl carbonate, ethylmethylimidazolium hexafluorophosphate (EMIPF6), 1,2-dimethyl-3-propyl imidazolium [(DMPIX)Im] or a combination thereof.

14. The carbon material of claim 1 , wherein an inner surface of the pores has a lower affinity for a solvent capable of solvating lithium ion than the outer surface of the pores.

15. An electrical energy storage device comprising the carbon material of claim 1 .

16. The electrical energy storage device of claim 15 , wherein an inner surface of the pores has a higher affinity for a solvent capable of solvating lithium ion than an outer surface of the pores.

17. The electrical energy storage device of claim 16 , wherein the solvent comprises acetonitrile, propylene carbonate, dimethyl carbonate, ethylene carbonate, diethyl carbonate, ethylmethylimidazolium hexafluorophosphate (EMIPF6), 1,2-dimethyl-3-propyl imidazolium [(DMPIX)Im] or a combination thereof.

18. The electrical energy storage device of claim 15 , wherein an inner surface of the pores has a lower affinity for a solvent capable of solvating lithium ion than the outer surface of the pores.

19. An electrode comprising a binder and the carbon material of claim 1 .

Assignees

• Basf Se

Inventors

• Feaver Aaron M
• Costantino Henry R
• Varjian Richard D

Classifications

• H01M2004/027

  Negative electrodes · CPC title

• H01M2004/8689

  Positive electrodes · CPC title

• H01M4/134

  Electrodes based on metals, Si or alloys · CPC title

• C01B31/08

  Chemistry & Metallurgy · mapped topic

• H01M4/96

  Carbon-based electrodes · CPC title