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Information × Registration Number 0310U002162, 0107U001381 , R & D reports Title Nanomaterials in the newest devices of generation and accumulation of electric energy popup.stage_title Дослідження фізико-хімічних властивостей нанокомпозитних матеріалів для акумуляторів і суперконденсаторів. Head Ostafiychuk Bogdan Kostyantynovych, Registration Date 10-02-2010 Organization Precarpathian university named after Vassyl Stefanyk popup.description2 Method of X-ray amorphous H2TiO3 getting is offered and realized, which consists in a division in time taking place of muriatic hydrolysis of TiCl4 and polycondensation of formed titanium hydroxide chloride Ti(OH)3Cl initiated by the salt NaOH adding to the solution. The synthesis of material in a sour reactionary medium (pN = 4,5 - 5,5) provides the getting of mainly H-titanates which does not contain enough amounts of sodium atoms. The particles of H-titanates have a framework structure. Polycondensation process at the pH < 7 results in formation of Na2TiO3, which has the layered structure. At other technological conditions (рН < 8,5) during the synthesis except for Na2TiO3, nanocrystallites of anatase can be formed. In basis of H-titanates structures synthesized directly in a sour reactionary medium and also got as a result of exchange of sodium ions in Na2TiO3 on hydrogen there are coordinating octahedrons [TiO6] and tetrahedrons [TiO4]. Forming of the close packing of atoms during polycondensation processes causes to the change of coordinating number of atoms of titan in relation to the atoms of oxygen from 4 to 6. At the low temperature conditions synthesis of product the mentioned conversion is slowed, that is why we assume existence in X-ray amorphous material phase, structural grounds of which are formed on the basis of coordinating tetrahedron [TiO4]. Distance from the central atom of titan to the atoms of oxygen in an equatorial plane and to the atoms of oxygen on edges of structural octahedron [TiO6] of anatase modification of TiO2 is accordingly 4 x 0,1893 nм and 2 х 0,1966 nм, and for rutile modification of TiO2 distances are 4 х 0,19485 nм and 2 х 0,19800 nм. Basic conformities of electrochemical intercalation of lithium ions in X-ray amorphous H2TiO3 are found out, dependence of electromotive force on the size of the "host" loading is investigated. It is shown that at x = 0 potential of the electrochemical system Li/ H2tio3 is equal 3,2 V and it grows to 3,45 V at presence in H-titan nanocrystallites of anatase form. Intervals 0,75 х 1,5, 1,75 х 3,27, 4,25 х 5,0 are found, in which a change of electromotive force is minimal. The possibility of X-ray amorphous H2TiO3 and magnesium flake-type hydroxide obtained by depositions methods as cathode materials for lithium power source with the specific energies 1470 Ah/kg and 872 Ah/kg are offered. Product Description popup.authors Будзуляк Іван Михайлович Гавенчук Юрій Васильович Карпик Богдан Володимирович Коцюбинський Володимир Олегович Лісовський Роман Петрович Мерена Роман Іванович Миронюк Іван Федорович Челядин Володимир Любомирович popup.nrat_date 2020-04-02 Close