INTRODUCTION Mechanochemical synthesis is widely used to manufacture different compounds from elements, including metal hydrides, nitrides, carbides or borides. Additives with surfactant properties are commonly used to ease the milling process and to prevent the activated powder from sticking together. Metal hydrides are attractive materials for hydrogen storage 1. Their fast and low-temperature decomposition can be reached after mechanical activation. It is important to conserve the reactivity of as-prepared powders without special storage conditions. The preparation of composites with active nanofragments embedded in an inert matrix is a special feature of our approach to this problem. In this work, boron was applied as matrix forming material, which protects the newborn TiH2 and Ti surfaces from atmospheric impact without blockage, but assures the hydrogen access. Dynamics of nanocomposite preparation and H2 sorption-desorption properties were also studied.
Mechanochemical synthesis Boron matrix Ti and TiH2 nanofragments TiH2 lattice modification H2 sorption-desorption properties
O.S. Morozova T.I. Khomenko A.V. Leonov Ch. Borchers E.Z. Kurmaev A. Moewes
N. Semenov Institute of Chemical Physics RAS, 4 Kosygin St, 119991 Moscow, Russia N. Semenov Institute of Chemical Physics RAS, 4 Kosygin St, 119991 Moscow,Russia Dept. of Chemistry, Moscow State University, Leninskie Gory, 119899 Moscow, Russia Institute of Metal Physics, RAS-Ural Division, 18 Kovalevskaya St,620041 Ekaterinburg, Russia Institute for Material Physics,University of Goettingen, 1 Friedrich-Hund-Platz, 37077 Goettingen,Ge Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, SK S