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Information × Registration Number 0221U101011, 0120U104636 , R & D reports Title Development of efficient hydrogen batteries and electrode materials based on magnesium nanocomposites for autonomous power supply systems popup.stage_title Head Zavalii Ihor Y., д.х.н. Registration Date 12-01-2021 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description2  The influence of partial substitution of Ni  Co and / or Mg  Pr and Nd on the hydrogen adsorption properties of the (R',R'')2-xMgxNi4-yCoy (R', R'' = Pr, Nd; x = 0.8 - 1.2; y = 0 - 2) alloys was studied. It is shown that the synthesized compounds easily absorb hydrogen up to 6.5 at. H / f.u. at room temperature and a hydrogen pressure of 10 bar. During gas hydrogenation, a transformation of structure from cubic to orthorhombic was detected for some compounds. The orthorhombic structure was established for the two hydrides, namely, Nd1.2Mg0.8Ni4H4.80 and Pr0.5Nd0.5MgNi4H4.0. Electrochemical hydrogenation measurements were conducted, and a tendency increasing an electrochemical capacity was observed in the alloys with magnesium and cobalt content increased. Such electrodes exhibits a maximum discharge capacity of more than 300 mAh/g. The amorphous composites Mg2Ni - 2Ni were synthesized, which as electrode materials are characterized by high discharge capacities up to 600 mAh/g. Product Description popup.authors Berezovets Vasyl V. Verbovytskyi Yurii V Zavaliy Ihor Yu Oshchapovskyy Ihor V. popup.nrat_date 2021-01-12 Close