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Information × Registration Number 0221U106759, 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 19-12-2021 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description2  Magnesium-based composite materials with the ZrN and Zr3V3O0.6 additives were synthesized by the method of reactive milling in hydrogen. It was shown that such hydride composites can be used in hydrolysis units to generate hydrogen. The amount of hydrogen released by them reaches 1000 ml/g and is enough to power a fuel cell (FC) with a capacity of 30 W. A metal hydride hydrogen storage tank has been manufactured and will be used to test the modes of hydrogen supply to the FC and to compare them with the “hydrolysis unit–FC” devices. The ceramics of the system 50%(ZrO2–4mol%Y2O3–2mol%CeO2–2wt%Al2O3) + 50%(NiO–5wt%CuO) has been studied. It was found that it has high strength under biaxial bending conditions due to partial implementation of quasi-ductile fracture micromechanism. After redox treatment, despite the presence of carbon dioxide in the operating environment, the strength of the cermet practically corresponds to that obtained for ceramics in the as-sintered state. This confirms the effectiveness of the proposed redox treatment of fuel cell anode materials. According to the results of the study of the (Ba1-хSrх)7Nb4MoO20 perovskite as a promising material for FC, it was found that a pressure in the range of 150-250 MPa is optimal for pressing the compacts, which allows to obtain those with a relative density of ~ 65-68% of the theoretical one. An increase in the sintering temperature to 1200 °С allows obtaining ceramics with a relative density of ~90% and with closed pores. This allows using it as an electrolyte. The parameters of creating a thin-film electrolyte of a ceramic fuel cell up to 80 μm thick on the basis of zinc oxide were determined, and the influence of pressure on the formation of the conductivity of the high-conductive electrolyte was found. A thin electrolyte based on zinc oxide was tested and a current density of 0.36 μm•А•см-2 was obtained at a voltage of 0.6 V and a temperature of 500 °C. Product Description popup.authors Zavaliy Ihor Yu Kononyuk Oleksandr P. Lavrysʹ Serhiy M Podhurska Viktoriya Ya popup.nrat_date 2021-12-19 Close