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Information × Registration Number 0217U006270, 0114U001128 , R & D reports Title Electrode materials based on nanoscale iron-containing compounds for electrochemical devices accumulation and generation of electricity popup.stage_title Head Ostafiychuk Bogdan Kostyantynovych, Registration Date 14-03-2017 Organization G.V. Kyrdyumov Institute for Metall Physics of N.A.S. of Ukraine popup.description2 Purpose of work is to optimization technologies of nanoscale and nanocomposite oxides, fluorides and phosphates of iron and installation the influence of the conditions of their synthesis, characteristics of crystalline and magnetic microstructure, morphology and surface condition on the effectiveness of the materials as the basis electrode compositions electrochemical devices generating and storing electricity. Therefore, designed of method obtaining mesoporous nanodisperse of iron oxide with control of phase composition and morphology obtained materials. As a result of application of liquid phase methods of synthesis and analysis of thermal decomposition of crystalline iron fluoride have established technological conditions at which formed of materials in advance specified phase composition and morphology. The structural transformation of model was proposed for produced dehydration process -FeF3·3H2O. Clarified of a crystallographic basis ?-FeF3 · 3H2O phases. It is established limits of the dimensional of phase transition "magnetically ordered - super paramagnetic condition of" for mahemit of mesoporous trifluoride and anhydrous iron. Was established that electrical properties of nanocomposites FeF3 · nH2O / C are defined by the presence of conductive components which leads to a change in conductivity mechanism of the electronic percolation. In the application of mesoporous iron oxide in lithium power sources achieved by specific capacity to 258 mA·h/g, and in case of iron trifluoride - 180 mA·h/g, provided decrease in reversibility characteristics at around 50-60% followed by stabilization. Outcome increased of dispersion materials leads to an increase capacitance and power characteristics of power sources. However, in the case of iron fluoride it also accelerates the process of amorphization structure, which leads to losses of increase specific characteristics in reversibility. Product Description popup.authors Груб'як Андрій Богданович Кайкан Лариса Степанівна Лісовський Роман Петрович Мокляк Володимир Володимирович Остафійчук Богдан Костянтинович Угорчук Володимир Васильович popup.nrat_date 2020-04-02 Close