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US 7,341,703 B2Granted
Mixed hydrogen generation material
AssigneeGeneral Motors Corporation
InventorsFrederick E Pinkerton, Martin S Meyer, Gregory P Meisner
Life of this patent
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Abstract
In one aspect, the invention provides a novel quaternary hydrogen storage composition having a hydrogenated state and a dehydrogenated state. Further, the present invention provides methods of storing hydrogen in a hydrogen storage composition, and methods of releasing hydrogen by reacting a nitride composition and a hydride composition.
Claims50
A hydrogen storage composition comprising:
- M′xM″yNzHd
- wherein
- (a) M′ is a cation selected from the group consisting of:
- Li, Ca, Na, Mg, K, Be, and mixtures thereof and x is greater than about 50 and less than about 53;
- (b) M″ comprises a cation composition comprising a Group 13 element of the Periodic Table and y is greater than about 5 and less than about 34;
- (c) N is nitrogen and z is greater than about 16 and less than about 45;
- (d) H is hydrogen and in a fully hydrogenated state, d is greater than about 110 and less than about 177;
- and
- (e) wherein M′, M″, x, y, z, and d are selected so as to maintain electroneutrality.
6 more elements
A method of storing hydrogen comprising:
- reacting a nitride having one or more cations other than hydrogen with a hydride represented by MIa(MIIHb)a, wherein MI represents a first cationic species other than hydrogen, MII represents a second cationic species other than hydrogen which is distinct from said first cationic species, wherein a and b are selected so as to maintain electroneutrality and
- (
- b
- ×
- a
- 1
- +
- a
- )
- represents a ratio of hydrogen to cationic species present in the hydride,
- wherein said reacting forms a hydrogen storage composition comprising hydrogen, nitrogen, and at least one cation selected from the group consisting of said one or more cations other than hydrogen derived from said nitride and at least one cation selected from the group consisting of MI and MII derived from said hydride.
8 more elements
A method of releasing hydrogen comprising:
- reacting a hydrogen storage nitride composition having one or more cations other than hydrogen with a hydrogen storage hydride composition represented by MIa(MIIHb)a, wherein MI represents a first cationic species other than hydrogen, MII represents a second cationic species other than hydrogen which is distinct from said first cationic species, wherein a and b are selected so as to maintain electroneutrality and
- (
- b
- ×
- a
- 1
- +
- a
- )
- represents an atomic ratio of hydrogen present to cationic species in said hydride composition, wherein said reacting releases hydrogen and forms one or more byproduct compounds comprising:
- nitrogen and at least one cation selected from the group consisting of said one or more cations other than hydrogen derived from said nitride composition and at least one cation selected from the group consisting of MI and MII derived from said hydride composition.
8 more elements
Dependencies are inferred from the claim text.