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Information × Registration Number 0223U005341, (0121U112036) , R & D reports Title Development of technological parameters for obtaining new functional materials for fuel cell components with optimal physical properties popup.stage_title Випробовування елементарної паливної комірки Head Solonin Yurii M., Доктор фізико-математичних наук Registration Date 20-12-2023 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 The aim of the project is to develop new materials for production, storage and use of hydrogen in hydrogen energy devices: fuel cells, batteries and hydrogen generators. popup.description2 Research object – formation processes of structure, phase composition and properties of powders, ceramics and alloys depending on the chemical composition and technological parameters of preparation. The purpose of the work is to develop new materials for the production, storage, and utilization of hydrogen in hydrogen energy devices by investigating the physico-chemical properties of materials based on Ba7Nb4MoO20, ZnO, magnesium intermetallics, and studying their functional characteristics. Research methods – X-ray phase analysis, scanning electron microscopy, laser diffraction method, impedance spectroscopy, flexural strength. Results and novelty. The mechanical behavior and electrical conductivity of ZnO ceramic were investigated for the first time, depending on the purity of the powder and the sintering temperature. The dependence of the conductivity of ZnO-based ceramics on the pressing pressure and the particle size of the powder was also studied. A methodology and measuring setup were developed for testing ceramic fuel cells and their individual structural elements over a wide temperature range (20–800 ºC). The influence of the solid-state synthesis temperature and strontium content on the phase composition and properties of powders (Ba1-хSrx)7Nb4MoO20 (x = 0.05, 0.10, 0.15, 0.20) has been investigated for the first time. Pressing pressure and sintering temperature optimization was performed for powders. It has been found for the first time that the perovskite Ba7Nb4MoO20 is characterized by low chemical compatibility with NiO, CuO, CoO, and Fe2O3, as interaction between the components of the mixture is observed at 600–700 ºC. Under typical sintering conditions (950–1050 ºC, 3 h), interaction between the electrolyte material and cathode is also observed. A statistical theory has been proposed for the composition of MgRT4Hx, where R = Ce, La, Nd, Pr, Y; T = Co, Ni; 0 ≤ x ≤ 6 during phase transitions in the course of hydriding, taking into account pressure. Product Description popup.authors Korablov Dmytro S. Bezdorozhev Oleksiy V. Zolotarenko Anatolii D. Ostroverkh Anna S. Solonin Yurii M. popup.nrat_date 2023-12-20 Close