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Information × Registration Number 0210U001535, 0107U010618 , R & D reports Title Research of intercalativ compounds formation with the anomalous high "guest loading" processes popup.stage_title Head Myronyuk Ivan Fedorovych, Доктор хімічних наук Registration Date 24-02-2010 Organization Precarpathian university named after Vassyl Stefanyk popup.description2 During the reporting period nanodispersed oxides Ti and Si were obtained by the method of fumed synthesis and possibilities of their using in the cathodes of lithium power sources were investigated. Main attention in the research was paid to the indication the reasons, which provide high specific energy of cathode material on the base of TiO2. It was shown, that titania dioxide, which is got as a result of fumed synthesis, is low-hydrated twophase powder-like material which contains an anatase and rutile. Determined by the Sherrer method the areas of coherent dispersion region of the nanoparticles of anatase and rutile coincide with the middle size of nanoparticles of fumed TiO2, which were determined with the help of electronic microscopy. Coinciding of the mentioned parameters certifies the single-crystal structure of titania nanoparticles. Inevitability of cracking single-crystal nanoparticles of anatase and rutile during electrochemical intercalationof lithium is proved. Current-formation electrochemical reactions which provide high power possibility of cathode materials on the basis of fumed TiO2 are connected with adsorption of lithium on the surface of cracks which appear as a result of diffusive deformation processes and local phase transformations of TiO2 in Li0,5TiO2 or TiO2 in LiTiO2 in the volume of nanocrystallites . An electrochemical source with cathode on the basis of titania has the highest power specific-capacitance, there titania is annealed at the temperature 773 К, which during the discharging of source to tension 2,2 V has the specific-capacitance 860 мА • hour •g-1. Product Description popup.authors Ільницький Роман Васильович Будзуляк Іван Михайлович Коцюбинський Володимир Олегович Монастирецький Володимир Валерійович Морушко Ольга Василівна Челядин Володимир Любомирович popup.nrat_date 2020-04-02 Close