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Information × Registration Number 0211U013214, 0111U007005 , R & D reports Title Development of new high-efficiency materials with functional and construction properties and creation of experimental samples of ceramic fuel cells on the basis of ZrO2. Investigation of electrophysical properties of electrolyte material on a base of ZrO2 with the multicomponent alloying. popup.stage_title Head Konstantinova Tatyana Yevgenivna, Registration Date 11-01-2012 Organization Donetsk Institute of Physics @ Engineering named after O.O.Galkin NAS of Ukraine popup.description2 Nanopowders were fabricated on the basis of zirconium dioxide with yttrium oxide and a wide range of additional doping (La2O3, Sm2O3, Dy2O3, CeO2, Gd2O3, Eu2O3, Al2O3) and sintered ceramic samples of them for research. Data analysis of impedance spectroscopy showed that the temperature dependence of the activation energy is stepwise. At high temperatures, the influence of impurities is less important, while at low temperatures the activation energy increases and remains dependent on the content of stabilizing additive. The transition region in which the activation energy strongly depends on temperature, shifted to the zone of high temperatures with increasing impurity content. It is shown that alloying of the zirconia powder by 6mol% Y2O3 +2 mol% CeO2 leads to a decrease in activation energy of ionic conductivity by grain volume to 10-12% and to improve the ionic conductivity along the grain boundaries (approximately in 2 times). A significant decrease in activation energy of ionic conductivity on the grain volume on 25% (0.75 eV) was invented in the system ZrO2 - 6mol% Y2O3 - 2 mol% Sm2O3. Also found that doping with zirconium dioxide mixture 6mol% Y2O3 +2mol% La2O3 leads to an increase in ionic conductivity along the grain boundaries. Dilatometric studies showed a decrease in the temperature of maximum densification rate for the system ZrO2 - Y2O3 with the addition of Sm2O3, Dy2O3, Gd2O3, Eu2O3, Al2O3, compared with the base system ZrO2 - 8mol% Y2O3. Product Description popup.authors Брюханова І.І. Бурховецький В.В. Волкова Г.К. Глазунов Ф.І. Глазунова В.О. Головань Г.Н. Горбань О.О. Даніленко І.А. Константінова Т.Є. Лоладзе Л.В. Перекрестов Б.І. Перекрестова Л.Д. Прохоренко С.В. Токій В.В. popup.nrat_date 2020-04-02 Close