Patent ID: 6733725
Filing Date: 2004-05-11
Classification: C01B,Y02E,Y10S

Abstract:
A reversible hydrogen storage composition having a hydrogen capacity exceeding 2 wt. % and capable of reversible operation at temperatures of 80-180Â° C. comprisingi) an unstable AlH3-based complex hydride alloyed by ball milling with: ii) at least one member selected from the group consisting of: a) an element that does not readily form a hydride in a solid-state form, b) an elemental metal which forms a stable metal hydride, said elemental metal being selected from the group consisting of Be, Mg, Ca, Ti, V, Y, Zr and La, and c) a hydride of said elemental metal of b), said unstable AlH3-based complex hydride i) liberating hydrogen readily at temperatures of 100 to 150Â° C.