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Title: Hydrogen storage in a combined M.sub.xAlH.sub.6/M'.sub.y(NH.sub.2).sub.z system and methods of making and using the same

Patent ·
OSTI ID:1041044

As a promising clean fuel for vehicles, hydrogen can be used for propulsion, either directly or in fuel cells. Hydrogen storage compositions having high storage capacity, good dehydrogenation kinetics, and hydrogen release and uptake reactions which are reversible are disclosed and described. Generally a hydrogen storage composition of a metal aluminum hexahydride and a metal amide can be used. A combined system (Li.sub.3AIH.sub.6/3LiNH.sub.2) with a very high inherent hydrogen capacity (7.3 wt %) can be carried out at moderate temperatures, and with approximately 95% of that inherent hydrogen storage capacity (7.0%) is reversible over repeated cycling of release and uptake.

Research Organization:
University of Utah Research Foundation (Salt Lake City, UT)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC36-05GO15069
Assignee:
University of Utah Research Foundation (Salt Lake City, UT)
Patent Number(s):
8,147,796
Application Number:
12/282,831
OSTI ID:
1041044
Country of Publication:
United States
Language:
English

References (2)

Structural stability and electronic structure for Li 3 AlH 6 journal January 2004
A New Li−Al−N−H System for Reversible Hydrogen Storage journal July 2006

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