Patent ID: 7927507

Claim:
A hydrogen storage composition comprising: (a) a ternary alloy comprising magnesium, boron and a metal wherein the ternary alloy has the formula: Mg k M n B m wherein: k, m and n represent molar ratios, k is a number between 1 and 50 including fractions thereof, m is a number between 1 and 15 including fractions thereof, n is a number between 1 and 50 including fractions thereof, and M is a metal selected from the group consisting of metals of Groups 1-2, Periods 2-6, Groups 3-12, Periods 4-6, Group 13, Periods 3-6, Group 14, Periods 4-6 and Group 15, Periods 4-6, of the Standard Periodic Table and combinations of two or more of the metals and wherein a molar ratio of the metal, magnesium and boron in the ternary alloy provides a boron species for generating hydrogen reversibly from borohydride anions; and (b) a metal hydride independently selected from the group consisting of a metal hydride of Li, a metal hydride of Mg and a combination of a metal hydride of Li and a metal hydride of Mg, wherein the ternary alloy and the metal hydride are in an amount sufficient to render the composition capable of hydrogen storage, and wherein the amount of the metal hydride in the hydrogen storage composition is about 1 to about 5 moles or more per mole of the ternary alloy.