Gigantic Capacito-Energetic Parameters οf Lithium-Intercalation Current Generation Reaction in Nanodispersed TiO2 with Defective Structure

I. Grygorchaka, I. Myronyuk b, M. Micov a, A. Pidluzhna a and O. Ostapuk a a Lviv Polytechnic National University, 1 Kotlyarevsky St., 79013 Lviv, Ukraine b Precarpathian University, 57 Shevchenko St., 76000 Ivano-Frankivsk, Ukraine

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To determine the reasons of the difference between the parameters of lithium intercalation process for materials of the same nature, the nanodispersed TiO2 was synthesized by pyrogenic method from TiCl4 in hydrogen-air flame with SiCl4 doping precursor and was compared with TiO2 of "Merck" quality. The analysis with the use of small-angle scattering method, electronic scanning microscopy and impedance spectroscopy were used to determine aforesaid parameters. Obtained results show that the reason of such behaviour lays in size effect and in modification of energetic topology of impurity system. Thermodynamic parameters of intercalation reaction agree well with investigated properties of ceramic samples.

DOI: 10.12693/APhysPolA.117.189 PACS numbers: 71.55.Jv