Patent ID: 7314579

Claim:
A hydrogen storage composition comprising: particles of one or more compositions of the formula M′ x M″ y N z H d and a metal additive or a metal-containing additive dispersed with the particles for enhancing the thermal release of hydrogen from M′ x M″ y N z H d , wherein M′ x M″ y N z H d (a) M′ is a cation selected from the group consisting of: Li, Ca, Na, Mg, K, Be, and mixtures thereof and x is in the range from about 50 to about 53; (b) M″ comprises a cation composition comprising a Group 13 element of the Periodic Table and y is in the range from about 5 to about 34; (c) N is nitrogen and z is in the range from about 16 to about 45; (d) H is hydrogen, and in a fully hydrogenated state of the hydrogen storage composition, d is in the range from about 110 to about 177; and (e) wherein M′, M″, x, y, z, and d are selected so as to maintain electroneutrality.