Hydrogen absorbing material, method for producing the same,...

Details Hydrogen absorbing material, method for producing the same,... Hydrogen absorbing material, method for producing the same,...

2007-12-14

2010-11-30

Mayes, Melvin C (Department: 1793)

Chemistry of inorganic compounds

Hydrogen or compound thereof

Binary compound

C423S650000

Reexamination Certificate

active

07842275

ABSTRACT:
After AlH3is synthesized, ball milling is performed under a condition in which a force of 2 G to 20 G (G represents the acceleration of gravity) is applied, to thereby provide AlH3having an X-ray diffraction pattern in the form of a halo pattern. That is, for example, nanostructured AlH3is provided, in which a grain boundary phase intervenes in a matrix phase, a side length t2of the matrix phase is not more than 20 nm, and a width w2of the grain boundary phase is not more than 10 nm. Alternatively, amorphous AlH3may be provided. Further, hydrogen is released from AlH3on which ball milling has been completed, and then the hydrogen is absorbed to induce a change into AlHx (provided that 0<x≦3 is satisfied). A dopant may also be added. A hydrogen storage container is constructed accommodating the hydrogen absorbing material, which is obtained as described above, inside the container.

REFERENCES:
patent: 7118611 (2006-10-01), Snow et al.
patent: 2005/0164878 (2005-07-01), Morioka et al.
patent: 2005/0191232 (2005-09-01), Vajo et al.
patent: 2004-18980 (2004-01-01), None
patent: 2004-293571 (2004-10-01), None

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