FIELD: power engineering.
SUBSTANCE: invention relates to hydrogen technology and hydrogen energy. Hydrogen-accumulating materials contain the following components, wt. %: 97–75 MgH2 and 3–25 nickel-graphene hydrogenation catalyst, representing 10 or 25 wt. % Ni nanoparticles with a size of 1–10 nm, uniformly fixed on the graphene surface. These materials are obtained by mechanochemical treatment of metallic magnesium with a nickel-graphene hydrogenation catalyst at room temperature and a hydrogen pressure of 10–30 atm.
EFFECT: resulting hydrogen-accumulating materials have a high content of reversible hydrogen and high cyclic stability with a decrease in the content and size of nickel nanoparticles.
2 cl, 5 ex
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