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Information × Registration Number 0220U104650, 0120U104880 , R & D reports Title Development of new functional materials for the needs of hydrogen energy popup.stage_title Head Zavalii Ihor Yu., Доктор хімічних наук Registration Date 24-12-2020 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description2  A number of hydride composites based on magnesium and Ti and TiO2 nanopowders, as well as magnesium composites with carbon additives were synthesized by the method of reactive grinding in hydrogen. It is shown that the synthesized composite materials can be used in hydrolysis devices to generate hydrogen. In this case, the flow rate of hydrogen can reach 100 ml / min, which is sufficient for the operation of the fuel cell with a capacity of 10 watts. The technological parameters of the synthesis of Ba7Nb4MoO20 oxide, which was chosen as the ceramic base for the electrolyte and the anode of the fuel cell with proton conductivity, were tested. Testing of the temperature of solid-phase synthesis in the range of 1000–1150 ℃ at repeated exposures for 10 h allowed to establish that the optimal temperature of Ba7Nb4MoO20 synthesis is 1050 ℃. Technological modes of obtaining ceramics of composition 50% (ZrO2 - 8 mol% Y2O3 - 2 wt% Al2O3) + 50% (NiO - 5 wt% CuO) were optimized by the temperature of calcination of powders (700℃) and their sintering (1400℃), which allowed to obtain a fine-grained structure and increased strength and electrical conductivity of the corresponding cermet. After reduction in the gas mixture N2–10% H2–5% CO2, it does not lose its physical and mechanical properties compared to the initial state. It is shown that a promising material for the manufacture of interconnect elements SOFC is a composite based on Ti2AlC, which has a higher heat resistance compared to a composite based on Ti3AlC2. Resistance to oxidation of bulk and film materials of the Ti-Al-C system after heating for 1000 h at 600 ℃ in air is high (m/S = 0.07-0.13 g/cm2), but the electrical conductivity of film materials after oxidation is much higher: for bulk material  = 1.73•10-2 S/m, and for film material  = 1.3•106 S/m. It was found that this is due to the formation of electricallyconductive phases, namely Ti3AlC phase with antiperovskite structure and aluminides TiAl and TiAl3. Product Description popup.authors Andrusyk Inna I Zavaliy Ihor Yu Lavrysʹ Serhiy M Oshchapovskyy Ihor V. Podhurska Viktoriya Ya Shylo Artem V popup.nrat_date 2020-12-24 Close