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US 7,094,387 B2Granted
Complex hydrides for hydrogen storage
AssigneeWashington Savannah River Company LLC
InventorRagaiy Zidan
Life of this patent
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Abstract
A hydrogen storage material and process of forming the material is provided in which complex hydrides are combined under conditions of elevated temperatures and/or elevated temperature and pressure with a titanium metal such as titanium butoxide. The resulting fused product exhibits hydrogen desorption kinetics having a first hydrogen release point which occurs at normal atmospheres and at a temperature between 50° C. and 90° C.
Claims7
A process for forming a hydrogen storage material comprising:
- providing a sodium aluminum hydride;
- mixing about 0.5%/wt to about 5.0%/wt of titanium to said sodium aluminum hydride;
- and,
- supplying a combination of heat and pressure in the presence of hydrogen gas sufficient to melt said sodium aluminum hydride and titanium mixture, thereby providing a fused hydrogen storage material having a hydrogen release point at normal atmospheres of between about 50° C. to about 90° C.
1 more element
A process of forming a hydrogen storage material comprising:
- supplying at least one complex hydride;
- mixing with said complex hydride a dopant selected from the group consisting of titanium, zirconium, vanadium, iron, cobalt, nickel, lanthanum, and mixtures thereof;
- subjecting said mixture of complex hydride and said dopant under pressure in the presence of hydrogen gas;
- raising the temperature of said mixture of said complex hydride and said dopant and said hydrogen gas to a melting point of said complex hydride;
- and,
- maintaining said heat and pressure for a time sufficient to form a fused product, wherein said fused product has a reversible ability to store and release hydrogen.
3 more elements
Dependencies are inferred from the claim text.