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Information × Registration Number 0221U101076, 0118U000458 , R & D reports Title Development of physico-chemical principles of synthesis, modification and treatment of hydrogen accumulating, electrodes and magnetic materials based on light metals and compounds of rare-earth metals with improved performance popup.stage_title Head ZAVALII Ihor Yu, Registration Date 13-01-2021 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description2  6. An isothermal cross-section of the phase diagram of the Y–Mg–Co system at 500 °C was constructed for the first time. The existence of 8 ternary and pseudobinary compounds was revealed and their crystal structure was established. Solid solutions AB2 and AB3 were chosen as promising materials for the study of hydrogen adsorption properties. XRD patterns of more than 50 new alloys in REM–Mg–M systems (M = Ni, Co, Fe, Mn) and corresponding hydrides are entered into the ICDD database. The hydrogen adsorption properties of AB2 and AB3 type alloys in REM–Mg–M systems (M = Ni, Co, Fe, Mn) have been studied. The crystal structure of the synthesized hydrides is established; it is shown that in most cases they retain the type of structure of the original matrix. In some cases, the formation of derivatives of the structure of the original IMC or their disproportionation / amorphization was observed. It is shown that the sorption capacity of hydrogen from the gas phase for Pr1-xMgx(Ni,Co)2 alloys increases with increasing cobalt content from 4 to 6 H / f.o. The charge-discharge characteristics of ternary and quadruple alloys based on REM1-xMgx (Ni,Co)2 have been studied. It is shown that the discharge capacity can increase with increasing magnesium content from 250 to 300 mAh/g. An experimental base has been created for quantum chemical calculations in the department of hydrogen technologies and alternative energy materials, as well as for studies of hydrolysis of hydrogen generation from hydrogen-containing materials (magnesium hydride, sodium borohydride, etc.). New stabilized Zr3N(Co)Nx compounds and their hydrides were synthesized for the first time. It is shown that quantum chemical calculations by the DFT method allow predicting the formation of stabilized IMC. The crystal structure of both the starting alloys and the corresponding hydrides, the parameters of hydrogen sorption-desorption by these compounds were established. Product Description popup.authors Berezovets Vasyl V. Borukh Ihor V. Verbovytskyi Yurii V Zavaliy Ihor Yu. Zasadnyy Taras M. Lyutyy Petro Ya. Fedorov Valeriy V. popup.nrat_date 2021-01-13 Close