Abstract: Provided is a composition comprising: (a) a principal phase that is provided by a layered mixed metal oxide having a rocksalt structure belonging to the R-3m space group; the layered mixed metal oxide comprising the following component elements: 45 to 55 atomic % lithium; 20 to 55 atomic % of one or more transition metals selected from the group consisting of chromium, manganese, iron, nickel, cobalt, and combinations thereof; and 0 to 25 atomic % of one or more additional dopant elements selected from the group consisting of: magnesium, calcium, strontium, titanium, zirconium, vanadium, copper, ruthenium, zinc, molybdenum, boron, aluminium, gallium, tin, lead, bismuth, lanthanum, cerium, gadolinium and europium; wherein said atomic % is expressed as a % of total atoms of said layered oxide, excluding oxygen; (b) a minor phase that is provided by a metal oxide that does not have the crystal structure of the layered mixed metal oxide, the minor phase comprising one or more of the transition metals contained in

Abstract: The invention provides a hydrogen storage material consisting essentially of a hydride of lithium and magnesium, the material having the general formula: LixMgyHn wherein: (i) x is in the range of from 0.17 to 0.93; (ii) y is in the range of from 0.07 to 0.83; and (iii) n is not greater than (x+2y); with the proviso that n is not (x+2y) when (a) x=y; (b) x=2y or (c) 2x=y. Methods of producing the hydrogen storage material and its use to store hydrogen reversibly or irreversibly are also provided.

Abstract: A doped hydrogen storage material according to the general formula: MgxByMzHn wherein: (i) the ratio of x/y is in the range of from 0.15 to 1.5; (ii) z is in the range of from 0.005 to 0.35; (iii) x+y+z equals 1; (iv) M=is one or more metals selected from the group of selected Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn; (v) n is no more than 4y; and wherein x/y does not equal 0.5 and at least part of the doped hydrogen storage material is amorphous. The doped hydrogen storage materials are used for storing hydrogen, and also disclosed is a method for reversibly desorbing and/or absorbing hydrogen.

Abstract: A doped hydrogen storage material according to the general formula: Mgx By Mz Hn wherein: (i) the ratio of x/y is in the range of from 0.15 to 1.5; (ii) z is in the range of from 0.005 to 0.35; (iii) x+y+z equals 1; (iv) M=is one or more metals selected from the group of selected Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn; (v) n is no more than 4y; and wherein x/y does not equal 0.5 and at least part of the doped hydrogen storage material is amorphous. The doped hydrogen storage materials are used for storing hydrogen, and also disclosed is a method for reversibly desorbing and/or absorbing hydrogen.

Abstract: The present invention relates to a doped hydrogen storage material according to the general formula: MgxByMzHn wherein: (i) the ratio of x/y is in the range of from 0.15 to 1.5; (ii) z is in the range of from 0.005 to 0.35; (iii) x+y+z equals 1; (iv) M=is one or more metals selected from the group of selected Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn; (v) n is no more than 4y; and wherein x/y does not equal 0.5 and at least part of the doped hydrogen storage material is amorphous. The present invention further relates to the use of doped hydrogen storage materials according to the invention for storing hydrogen and a method for reversibly desorbing and/or absorbing hydrogen.

Abstract: The invention provides a hydrogen storage material consisting essentially of a hydride of lithium and magnesium, the material having the general formula: LixMgyHn wherein: (i) x is in the range of from 0.17 to 0.93; (ii) y is in the range of from 0.07 to 0.83; and (iii) n is not greater than (x+2y); with the proviso that n is not (x+2y) when (a) x=y; (b) x=2y or (c) 2x=y. Methods of producing the hydrogen storage material and its use to store hydrogen reversibly or irreversibly are also provided.

Abstract: The present invention relates to a doped hydrogen storage material according to the general formula: MgxByMzHn wherein: (i) the ratio of x/y is in the range of from 0.15 to 1.5; (ii) z is in the range of from 0.005 to 0.35; (iii) x+y+z equals 1; (iv) M= is one or more metals selected from the group of selected Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn; (v) n is no more than 4y; and wherein x/y does not equal 0.5 and at least part of the doped hydrogen storage material is amorphous. The present invention further relates to the use of doped hydrogen storage materials according to the invention for storing hydrogen and a method for reversibly desorbing and/or absorbing hydrogen.