High capacity hydrogen storage nanocomposite materials
View Patent ↗A novel hydrogen absorption material is provided comprising a mixture of a lithium hydride with a fullerene. The subsequent reaction product provides for a hydrogen storage material which reversibly stores and releases hydrogen at temperatures of about 270° C.
1. A hydrogen storage composition according to the formula Li x C 60 H y where x has a value of between 1 to 10 and y has a value of between 0 to 70, and the composition reversibly stores and releases 5 wt % hydrogen and the composition is formed by a solvent-based incorporation of lithium hydride and a fullerene which is subsequently heated to a first hydrogen desorption temperature.
2. The hydrogen storage composition according to claim 1 wherein the hydrogen storage composition has an initial hydrogen release temperature of 270° C.
3. The hydrogen storage composition according to claim 1 , wherein at a hydrogen release temperature of said composition, the composition releases no volatile hydrocarbons.
4. A hydrogen storage composition according to claim 1 wherein the ratio of Li:C 60 is a least 6:1.
5. A hydrogen storage composition consisting essentially of the formula Li x C 60 H y where x has a value of between 1 to 10 and y has a value of between 0 to 70, and the composition reversibly stores and releases 5 wt % hydrogen and the composition is formed by a solvent-based incorporation of lithium hydride and a fullerene which is subsequently heated to a first hydrogen desorption temperature.
6. The hydrogen storage composition according to claim 5 wherein the hydrogen storage composition has an initial hydrogen release temperature of 270° C.
7. The hydrogen storage composition according to claim 5 , wherein at a hydrogen release temperature of said composition, the composition releases no volatile hydrocarbons.
8. A hydrogen storage composition according to claim 5 wherein the ratio of Li:C 50 is a least 6:1.
9. The hydrogen storage composition of claim 1 where the mole ratio of LiH:C 60 is 6:1 and y has a value of about 40.