Hydrogen storage material

Patent metadata

Field	Value
Publication number	US-2026022011-A1
Application number	US-202519289669-A
Country	US
Kind code	A1
Filing date	Aug 4, 2025
Priority date	Jul 10, 2019
Publication date	Jan 22, 2026
Grant date	—

Abstract

Disclosed is a method of: providing a hydrogenated sp 2 carbon allotrope, and releasing hydrogen gas from the carbon allotrope. The method may be used an apparatus having: a vessel for containing the hydrogenated sp 2 carbon allotrope, a fuel cell capable of using hydrogen gas a fuel, and a tube for transporting hydrogen gas from the vessel to the fuel cell. The carbon allotrope may be made by: providing a mixture of an sp 2 carbon allotrope and liquid ammonia, adding an alkali metal to the mixture, and sonicating the mixture to form a hydrogenated form of the carbon allotrope. The hydrogenated carbon can be at least 3.5 wt % hydrogen covalently bound to the carbon.

First claim

What is claimed is:

1 . An apparatus comprising:
a vessel for containing a hydrogenated sp 2 carbon allotrope; a fuel cell capable of using hydrogen gas a fuel; and a tube for transporting hydrogen gas from the vessel to the fuel cell.

2 . The apparatus of claim 1 , wherein the vessel is a reactor having an external heat source.

3 . The apparatus of claim 1 , wherein the vessel is a pressurized vessel.

4 . The apparatus of claim 1 , wherein the hydrogenated sp 2 carbon allotrope is graphane.

5 . The apparatus of claim 1 , wherein the carbon allotrope is a fullerene or carbon nanotubes.

6 . The apparatus of claim 1 , further comprising:
a carbon filter in the tube.

7 . A hydrogenated sp 2 carbon allotrope comprising at least 3.5 wt % hydrogen covalently bound to the carbon allotrope.

8 . The carbon allotrope of claim 7 , wherein the carbon allotrope is graphene or graphite.

9 . The carbon allotrope of claim 7 , wherein the carbon allotrope comprises at least 7.5 wt % hydrogen covalently bound to the carbon allotrope.

10 . A method comprising:
providing a mixture comprising an sp 2 carbon allotrope and liquid ammonia; adding an alkali metal to the mixture; sonicating the mixture; and adding a proton source to the mixture to form a hydrogenated form of the carbon allotrope.

11 . The method of claim 10 , further comprising:
sonicating the mixture before adding the alkali metal.

12 . The method of claim 10 , further comprising:
purifying the hydrogenated carbon allotrope in an acid.

13 . The method of claim 10 , wherein the alkali metal is lithium.

14 . The method of claim 10 , wherein the proton source is water, methanol, ethanol, or tert-butyl alcohol.

Assignees

• Us Gov Sec Navy

Inventors

• Baldwin Jeffrey W
• Morse James R
• Zugell David A
• Matis Bernard R
• Willauer Heather D
• Gangemi Nicolas T
• Houston Brian

Classifications

• C01B32/19

  by exfoliation · CPC title

• C01P2002/89

  by mass-spectroscopy · CPC title

• C01P2002/88

  by thermal analysis data, e.g. TGA, DTA, DSC · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• B01J3/04

  Pressure vessels, e.g. autoclaves · CPC title