TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The second reaction produces hydrogen. The first reaction produces at least a portion of the hydroxide. The second reaction commences while the first reaction is occurring. The second reaction is exothermic or endothermic. The water is added to the hydride. The amount of heat generated is greater than or equal to activation energy of the second reaction. The second reaction proceeds to completion and the second portion of hydride is consumed in the second reaction.The second reaction proceeds according to a reaction mechanism of LiH+LiOH-Li2O+H2, NaH+LiOH-one halfLi2O+one halfNa2O+H2, MgH2+Mg(OH)2-MgO+2H2, AlH3+Al(OH)3-Al2O3+3H2, CaH2+Ca(OH)2-CaO+2H2, SrH2+Sr(OH)2-SrO+2H2, BH3+B(OH)3-B2O3+3H2, BeH2+Be(OH)2-BeO+2H2, 3LiH+H3BO3-LiBO2+Li2O+3H2, 3LiH+H3BO3-Li3BO3+3H2, LiBH4+4H3BO3-Li3B7O12+12H2, LiBH4+4LiOH-LiBO2+2Li2O +4H2, NaBH4+2Mg(OH)2-NaBO2+2MgO+4H2, NaBH4+4NaOH-NaBO2+2Na2O+4H2, LiBH4+LiOH+LiOH.H2O-Li3BO3+2Li2O+4H2, or 2LiBH4+ LiOH+2LiOH.H2O-Li4B2O5+LiH+7H2.The hydrogen can be produced by generating heat in a first reaction by reacting water with a portion of a hydride present in a first material composition, and reacting another portion of the hydride present in the first material composition with a hydroxide present in a second material composition in the second reaction, thus forming a hydrogen product and a byproduct composition comprising an oxide.Preferred Component: The hydride is MIxHx. The hydroxide is of structure MIIy(OH)y and comprises MIIy(OH)y.wH2O. The hydride is lithium hydride (preferably), sodium hydride, potassium hydride, beryllium hydride, magnesium hydride, calcium hydride, strontium hydride, titanium hydride, aluminum hydride, boron hydride, lithium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, lithium alanate, sodium alanate, magnesium alanate, and/or calcium alanate.The hydroxide is lithium hydroxide (preferably), sodium hydroxide, potassium hydroxide, beryllium hydroxide, magnesium hydroxide, calcium hydroxide, strontium hydroxide, titanium hydroxide, aluminum hydroxide, and/or boron hydroxide.At least a portion of the water is provided in the form of a hydrated hydroxide compound from hydrated lithium hydroxide, hydrated sodium hydroxide, hydrated potassium hydroxide, hydrated barium hydroxide, hydrated barium hydroxide, hydrated lithium aluminum hydroxide, and/or hydrated magnesium aluminum hydride. The hydroxide comprises a non-hydrated hydroxide compound and a hydrated hydroxide compound.MI=cationic specie(s) other than hydrogen, preferably CH3, Al, As, B, Ba, Be, Ca, Cd, Ce, Cs, Cu, Eu, Fe, Ga, Gd, Ge, Hf, Hg, In, K, La, Li, Mg, Mn, Na, Nd, Ni, Pb, Pr, Rb, Sb, Sc, Se, Si, Sm, Sn, Sr, Th, Ti, Tl, V, W, Y, Yb, Zn, and/or Zr;x=average valence state of MI;MII=cationic specie(s) other than hydrogen, preferably CH3, C2H5, C3H7, Al, As, B, Ba, Be, Ca, Cd, Ce, Cs, Cu, Eu, Fe, Ga, Gd, Ge, Hf, Hg, In, K, La, Li, Mg, Mn, Na, Nd, Ni, Pb, Pr, Rb, Sb, Sc, Se, Si, Sm, Sn, Sr, Th, Ti, Tl, V, W, Y, Yb, Zn, and/or Zr;y=an average valence state of MII;w= stoichiometric amount of hydrated water.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The second reaction produces hydrogen. The first reaction produces at least a portion of the hydroxide. The second reaction commences while the first reaction is occurring. The second reaction is exothermic or endothermic. The water is added to the hydride. The amount of heat generated is greater than or equal to activation energy of the second reaction. The second reaction proceeds to completion and the second portion of hydride is consumed in the second reaction.The second reaction proceeds according to a reaction mechanism of LiH+LiOH-Li2O+H2, NaH+LiOH-one halfLi2O+one halfNa2O+H2, MgH2+Mg(OH)2-MgO+2H2, AlH3+Al(OH)3-Al2O3+3H2, CaH2+Ca(OH)2-CaO+2H2, SrH2+Sr(OH)2-SrO+2H2, BH3+B(OH)3-B2O3+3H2, BeH2+Be(OH)2-BeO+2H2, 3LiH+H3BO3-LiBO2+Li2O+3H2, 3LiH+H3BO3-Li3BO3+3H2, LiBH4+4H3BO3-Li3B7O12+12H2, LiBH4+4LiOH-LiBO2+2Li2O +4H2, NaBH4+2Mg(OH)2-NaBO2+2MgO+4H2, NaBH4+4NaOH-NaBO2+2Na2O+4H2, LiBH4+LiOH+LiOH.H2O-Li3BO3+2Li2O+4H2, or 2LiBH4+ LiOH+2LiOH.H2O-Li4B2O5+LiH+7H2.The hydrogen can be produced by generating heat in a first reaction by reacting water with a portion of a hydride present in a first material composition, and reacting another portion of the hydride present in the first material composition with a hydroxide present in a second material composition in the second reaction, thus forming a hydrogen product and a byproduct composition comprising an oxide.Preferred Component: The hydride is MIxHx. The hydroxide is of structure MIIy(OH)y and comprises MIIy(OH)y.wH2O. The hydride is lithium hydride (preferably), sodium hydride, potassium hydride, beryllium hydride, magnesium hydride, calcium hydride, strontium hydride, titanium hydride, aluminum hydride, boron hydride, lithium borohydride, sodium borohydride, magnesium borohydride, calcium borohydride, lithium alanate, sodium alanate, magnesium alanate, and/or calcium alanate.The hydroxide is lithium hydroxide (preferably), sodium hydroxide, potassium hydroxide, beryllium hydroxide, magnesium hydroxide, calcium hydroxide, strontium hydroxide, titanium hydroxide, aluminum hydroxide, and/or boron hydroxide.At least a portion of the water is provided in the form of a hydrated hydroxide compound from hydrated lithium hydroxide, hydrated sodium hydroxide, hydrated potassium hydroxide, hydrated barium hydroxide, hydrated barium hydroxide, hydrated lithium aluminum hydroxide, and/or hydrated magnesium aluminum hydride. The hydroxide comprises a non-hydrated hydroxide compound and a hydrated hydroxide compound.MI=cationic specie(s) other than hydrogen, preferably CH3, Al, As, B, Ba, Be, Ca, Cd, Ce, Cs, Cu, Eu, Fe, Ga, Gd, Ge, Hf, Hg, In, K, La, Li, Mg, Mn, Na, Nd, Ni, Pb, Pr, Rb, Sb, Sc, Se, Si, Sm, Sn, Sr, Th, Ti, Tl, V, W, Y, Yb, Zn, and/or Zr;x=average valence state of MI;MII=cationic specie(s) other than hydrogen, preferably CH3, C2H5, C3H7, Al, As, B, Ba, Be, Ca, Cd, Ce, Cs, Cu, Eu, Fe, Ga, Gd, Ge, Hf, Hg, In, K, La, Li, Mg, Mn, Na, Nd, Ni, Pb, Pr, Rb, Sb, Sc, Se, Si, Sm, Sn, Sr, Th, Ti, Tl, V, W, Y, Yb, Zn, and/or Zr;y=an average valence state of MII;w= stoichiometric amount of hydrated water. EXAMPLE - A mixed cation hydrogen storage material system comprised of a complex hydride and a hydroxide. An equal molar ratio of lithium borohydride (LiBH4) and lithium hydroxide (LiOH) weighed as 0.224 g LiBH4 and 0.981 g of LiOH, was mixed and milled for 1 hour. The sample was analyzed. Hydrogen generation appeared to commence at approximately 250degreesC. A maximum of 6.6 wt.% hydrogen was produced that was close to the theoretical yield of 6.8 wt.%.