Hydrogen storage materials having a high density of...

C - Chemistry – Metallurgy – 22 – C

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C22C 19/05 (2006.01) C01B 3/00 (2006.01) C22C 14/00 (2006.01) C22C 16/00 (2006.01) C22C 27/00 (2006.01) H01M 4/38 (2006.01) H01M 10/00 (2006.01)

Patent

CA 2236261

Disordered Multicomponent hydrogen storage material characterized by extraordinarily high storage capacity due to a high density of useable hydrogen storage sites (greater than 10 23 defect sites/cc) and/or an extremely small crystallite size, as shown on the graph in the figure. The hydrogen storage material can be employed for electrochemical, fuel cell and gas phase applications. The material may be selected from either of the modified LaNi5 or modified TiNi families formulated to have a crystallite size of less than 200 Angstroms and most preferably less than 100 Angstroms.

L'invention se rapporte à une substance désordonnée de stockage d'hydrogène multicomposant qui se caractérise par une capacité de stockage extraordinairement élevée due à une forte densité de sites de stockage d'hydrogène utilisables (supérieure à 10<23> sites de défauts/cc) et/ou à des dimensions de cristallite extrêmement petite. La substance de stockage d'hydrogène peut être utilisée dans des applications électrochimiques, des piles à combustible et dans des substances de stockage à phase gazeuse. La substance peut être sélectionnée parmi l'une ou l'autre des familles de LaNi5 modifiées ou de TiNi modifiées qui ont été formulées de façon à présenter des dimensions de cristallite inférieures à 200 Angströms et de préférence à 100 Angströms.

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