TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred System: (s1) Comprises the solid media disposed in a container with the gaseous atmosphere flowing through the container. In (s1), the first condition have a media comprising an amide (preferably LiNH2) and hydride (preferably LiH); and the second condition have a composition comprising an imide (preferably Li2NH). In (s2), the nitrogen is present in an amount to inhibit formation of ammonia as compared to a system that does not include nitrogen. Preferred Components: The solid media is in the first hydrogenated condition and gaseous atmosphere comprises nitrogen and helium (preferably nitrogen). The gaseous atmosphere is a mixture of gasses comprising the nitrogen or hydrogen. The gaseous atmosphere is a mixture of gasses, and the nitrogen constitutes the greatest amount by volume of any gaseous constituent in the mixture. The solid media is in the second condition, and the gaseous atmosphere comprises a mixture of gasses including hydrogen for reaction with the media to form the first condition. The amount by volume of the nitrogen is greater than or equal to to the amount by volume of the hydrogen or nitrogen of the atmosphere. In (s1), the imide is a compound of formula Mc((NH)-2)c/2; amide is a compound of formula (MI)d((NH2)-1)d; and hydride is a compound of formula (MII)fHf. In (m1), the nitrogen-containing atmosphere comprises a mixture of gasses comprising the nitrogen. In (m1), the hydrogenated state comprises an amide; dehydrogenated state comprises an imide; and nitrogen inhibits decomposition of the amide. In (m1), the imide is lithium imide (Li2NH), and amide is (LiNH2).M, MI, MII =at least one cationic species other than hydrogen;c=average valence state of M;d, f=average valence states.Preferred Method: The releasing step is conducted in an atmosphere that comprises nitrogen (at least 1, 10 or 50 vol.%). The storing is conducted in an atmosphere having the hydrogen and nitrogen present in approximately equivalent amounts by volume. The decomposition is inhibited in the presence of the nitrogen as compared to the decomposition in the absence of nitrogen. The generating step is conducted according to: Li2NH+H2 = LiNH2+LiH.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred System: (s1) Comprises the solid media disposed in a container with the gaseous atmosphere flowing through the container. In (s1), the first condition have a media comprising an amide (preferably LiNH2) and hydride (preferably LiH); and the second condition have a composition comprising an imide (preferably Li2NH). In (s2), the nitrogen is present in an amount to inhibit formation of ammonia as compared to a system that does not include nitrogen. Preferred Components: The solid media is in the first hydrogenated condition and gaseous atmosphere comprises nitrogen and helium (preferably nitrogen). The gaseous atmosphere is a mixture of gasses comprising the nitrogen or hydrogen. The gaseous atmosphere is a mixture of gasses, and the nitrogen constitutes the greatest amount by volume of any gaseous constituent in the mixture. The solid media is in the second condition, and the gaseous atmosphere comprises a mixture of gasses including hydrogen for reaction with the media to form the first condition. The amount by volume of the nitrogen is greater than or equal to to the amount by volume of the hydrogen or nitrogen of the atmosphere. In (s1), the imide is a compound of formula Mc((NH)-2)c/2; amide is a compound of formula (MI)d((NH2)-1)d; and hydride is a compound of formula (MII)fHf. In (m1), the nitrogen-containing atmosphere comprises a mixture of gasses comprising the nitrogen. In (m1), the hydrogenated state comprises an amide; dehydrogenated state comprises an imide; and nitrogen inhibits decomposition of the amide. In (m1), the imide is lithium imide (Li2NH), and amide is (LiNH2).M, MI, MII =at least one cationic species other than hydrogen;c=average valence state of M;d, f=average valence states.Preferred Method: The releasing step is conducted in an atmosphere that comprises nitrogen (at least 1, 10 or 50 vol.%). The storing is conducted in an atmosphere having the hydrogen and nitrogen present in approximately equivalent amounts by volume. The decomposition is inhibited in the presence of the nitrogen as compared to the decomposition in the absence of nitrogen. The generating step is conducted according to: Li2NH+H2 = LiNH2+LiH.