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Information × Registration Number 0209U002652, 0106U011940 , R & D reports Title Development of novel hydriding Mg-, Ti- and REM-based materials for efficient accumulation and transportation of hydrogen popup.stage_title Head Zavaliy Ihor Yulianovych, Registration Date 11-03-2009 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 Novel composite materials on the basis of Mg have been investigated. The best hydrogen absorption-desorption properties were obtained for the Mg-20%Ti(Zr)4Fe2Ox composites synthesised by reactive milling in hydrogen. Hydrogenation of the Mg-h-phase composites were shown to proceed through two stages: quick (<5 sec) followed by a slow one, at which the Mg®MgH2 transformation rate is limited by hydrogen atoms diffusion through the layer of magnesium hydride.The Mg®MgH2 transformation level increases with the rise in hydrogenation temperature. The introduction of graphite into the composite leads to deceleration of the first hydrogenation stage, however allows reaching complete Mg®MgH2 transformation regardless of hydrogenation temperature. Crystal chemistry analysis of the Mg3MnNi2 h-phase allowed to choose a hydride structure model, which will be further studied by neutron diffraction experiment. Product Description popup.authors popup.nrat_date 2020-04-02 Close