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.
Claims3
A hydrogen storage material comprising a complex hydride selected from the group consisting of hydrides having the formula of My(BH4+z)x where M is a transition metal or boron, B is aluminum or boron, X has a value between 1 and 4, Y has a value of between 1 and 6;
- and Z has a value of 0 or 2;
- and,
- a dopant selected from the group consisting of metals comprising titanium, zirconium, vanadium, iron, cobalt, nickel, lanthanum, and mixtures thereof;
- wherein said complex hydride and said dopant is combined under heat and pressure to form a fused product having a hydrogen release point at normal atmosphere of between about 50° C. to about 90° C.
A process of forming a hydrogen storage material comprising:
- supplying a complex hydride selected from the group consisting of hydrides having the formula of My(BH4+z)x where M is a transition metal or boron, X has a value between 1 and 4, Y has a value of between 1 and 6;
- and Z has a value of 0 or 2;
- mixing with said complex hydride a dopant selected from the group consisting of metals comprising titanium, zirconium, vanadium, iron, cobalt, nickel, lanthanum, and mixtures thereof;
- placing said complex hydride and said dopant under pressure in the presence of hydrogen gas;
- raising the temperature of said complex hydride, 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.
Dependencies are inferred from the claim text.