Abstract:
In one aspect, the invention provides a hydrogen storage material that is formed by reacting solid precursors (a) and (b). The (a) precursor is a compound containing X-H and Y-H bonds, where X is a Group 13 and Y is a Group 15 element. Preferably X is boron (B-H) and Y is nitrogen (N-H). Most preferably, the precursor (a) is borazane. The (b) precursor is preferably a hydride, such as LiH or LiAIH 4 . Another feature of the present invention is a novel hydrogen storage composition material that is formed as an intermediate (INT) in the reaction of the (a) with the (b) precursors. The INT hydrogen storage material can be a quaternary B-H-Li-N composition. Other aspects of hydrogen storage materials are provided herein.
Abstract:
In one aspect, the invention provides a hydrogen storage composition having a hydrogenated state and a dehydrogenated state. In the hydrogenated state, such composition comprises a hydride and a hydroxide. In a dehydrogenated state, the composition comprises an oxide. The present invention also provides methods of and compositions for regenerating a species of a hydroxide and a hydride material.
Abstract:
In one aspect, the invention provides a hydrogen storage composite formed of a mesoporous scaffolding material and a hydrogen storage composition comprising precursors that react to form quarternary B-H-Li-N composition. In another aspect, the invention provides a process for forming hydrogen storage material. In each aspect, a high portion of hydrogen is released as hydrogen gas and a lesser portion of hydrogen is released as a hydrogen-containing byproduct.
Abstract:
In one aspect, the invention provides a method of storing hydrogen that comprises reacting two precursors to form a hydrogen storage composition comprising hydrogen, nitrogen, a Group 13 element, and an element selected from Group 1, Group 2 or mixtures thereof. In other aspects, the present invention provides a method of storing hydrogen by ball-milling two precursors at a temperature in a range sufficient to prevent pre-mature release of hydrogen, while the temperature is still sufficient to induce reaction between the precursors. The precursors preferably have X-H, Y-H and A-H bonds where X represents a Group 13 element, Y represents a Group 15 element, and A represents an element from Group 1, Group 2, or mixtures thereof. Other variations of the methods of storing hydrogen are further provided.
Abstract:
In one aspect, the present invention provides a system for methods of producing and releasing hydrogen from hydrogen storage compositions having a hydrogenated state and a dehydrogenated state. In the hydrogenated state, such a composition comprises a hydride and a hydroxide. In a dehydrogenated state, the composition comprises an oxide. A first reaction in conducted between a portion of the hydride and water to generate heat sufficient to cause a second hydrogen production reaction between a remaining portion of the hydride and the hydroxide.
Abstract:
In one aspect, the invention provides a hydrogen storage composition having a hydrogenated state and a dehydrogenated state. In the hydrogenated state, such composition comprises a hydride and a hydroxide. In a dehydrogenated state, the composition comprises an oxide. The present invention also provides methods of producing hydrogen, including for mobile fuel cell device applications.