CARBON-BASED FOAM NANOCOMPOSITE HYDROGEN STORAGE MATERIAL

• US 20110053765A1
• Filed: 08/25/2010
• Published: 03/03/2011
• Est. Priority Date: 11/30/2005
• Status: Abandoned Application

• Current Assignee: EnerG2, Inc., University of Washington
• Original Assignee: EnerG2, Inc., University of Washington
• Inventors: Cao, Guozhong, Feaver, Aaron
• Application Number:
  US12/868,181
• Publication Number:
  US 20110053765A1
• Time in Patent Office: Days
• US Class Current: 502/304
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C01B 3/0021 Carbon, e.g. active carbon, carbon nanotubes, fullerenes; Treatment thereof
• CPC Class Codes: C01B 32/00 Carbon; Compounds thereof C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48
• CPC Class Codes: F17C 11/005 for hydrogen
• CPC Class Codes: H01M 8/04007 related to heat exchange
• CPC Class Codes: H01M 8/04089 of gaseous reactants
• CPC Class Codes: H01M 8/04216 characterised by the choice for a specific material, e.g. carbon, hydride, absorbent
• CPC Class Codes: H01M 8/065 by dissolution of metals or alloys; by dehydriding metallic substances
• CPC Class Codes: Y02E 60/32 Hydrogen storage
• CPC Class Codes: Y02E 60/50 Fuel cells

Abstract

A carbon-based foam composite including a carbon-based foam and a solid state hydrogen storage material, methods for making the carbon-based foam composite, and methods for using the carbon-based foam composite. Representative carbon-based foams include cryogels, aerogels, and xerogels. Representative solid state hydrogen storage materials include metal hydrides and chemical hydrides.

Claims

1. A composite, comprising a sulfur-functionalized carbon-based foam and a solid state hydrogen storage material.

2. The composite of claim 1, wherein the carbon-based foam is a cryogel.

3. The composite of claim 1, wherein the solid state hydrogen storage material comprises a metal hydride.

4. The composite of claim 3, wherein the metal hydride is magnesium hydride.

5. The composite of claim 1, wherein the solid state hydrogen storage material comprises a chemical hydride.

6. The composite of claim 5, wherein the chemical hydride is ammonia borane.

8. The composite of claim 1 further comprising a transition metal catalyst.

10. The composite of claim 1, wherein the surface area of the carbon-based foam ranges from 20 m²/g to 3000 m²/g.

26. The composite of claim 10, wherein the surface area of the carbon-based foam ranges from 1500 m²/g to 2000 m²/g.

27. The composite of claim 10, wherein the surface area of the carbon-based foam ranges from 2400 m²/g to 2600 m²/g.

28. The composite of claim 1, wherein the carbon-based foam is an aerogel.

29. The composite of claim 1, wherein the carbon-based foam is a xerogel.

30. The composite of claim 3, wherein the metal hydride is Mg₂FeH₆, Na₃AlH₆, NaAlH₄, MnNi₅H₆, TiCr_1.8H_1.7, Mg₂NiH₄, PdH_0.6, CaNi₅H₅, TiFeH, MgH₂, LaNi₅₅Al_1.5H₅ or LaNi₄AlH₅.

31. The composite of claim 5, wherein the chemical hydride is LiAlH₄, LiBH₄, NaAlH₄ or NaBH₄.

32. The composite of claim 8, wherein the transition metal catalyst is Ni, Ce or Zr.

33. The composite of claim 1, wherein the carbon-based foam comprises a total pore volume of from 1.0 to 1.5 cm³/g.

34. The composite of claim 1, wherein the carbon-based foam comprises a density of from 0.20 to 1.0 g/cm³, a surface area of from 1500 to 2000 m²/g and a total pore volume of from 1.0 to 1.5 cm³/g.

7. (canceled)

9. (canceled)

11-25. -25. (canceled)