Sehin M. Cathode matters of lithium power sources on the basis of laser modified titania

On the basis of complex investigations of nanodispersed titania the optimal conditions of its laser modification are set, under which this material provide high specific capacitive characteristics of lithium power sources. There changes of morphology and structure of nanodimension TiO2, caused by action of laser irradiation ( pulse duration 15 ns, wavelength 1,06 mkm) in dependence on duration of irradiation and energy in an impulse are set. Also studies the effect of laser irradiation with the energy influence in the ТіО2 transparence area on its phonon spectra, which are not studied enough nowadays. Important factors which influence on the frequency position of phonon lines of nanocrystal TiO2 can be vacancies in the oxygen sublattice and internal microstrains. It is showed that the laser irradiation caused structural transformations influence on the lithium intercalation degree into TiO2. The optimal conditions of laser irradiation nanodispersive TiO2 (pulse energy E = 0,02 J, pulse duration 15 ns repetition frequency f = 28 Hz, duration of exposure to 4,5 min.), at which specific energy characteristics of LPS, formed on its basis, increased by 40-45% is set.