Home – Home – Jornals – Chemistry for Sustainable Development 2020 number 1

Ceramic samples of lithium titanate spinel Li₄Ti₅O₁₂ and Li₄Ti₅O₁₂/Li₂TiO₃ composites with different content of Li₂TiO₃ as an additional phase were obtained by means of solid-phase synthesis. The phase composition and transport properties of the obtained samples are investigated. By means of impedance spectroscopy within the frequency range 20 Hz - 1 MHz, three contributions into total resistance of the samples were discovered. Assumptions concerning the reasons for higher direct-current conductivity of Li₄Ti₅O₁₂/Li₂TiO₃ composites at room temperature than that of lithium titanate spinel Li₄Ti₅O₁₂ are made.