lithium-ion battery

Within the work, an influence of manganese dopant on electrochemical performance of anatase titanium dioxide (Mn/Ti = 0.05; 0.1; 0.2) had been investigated. It was established that incorporation of Mn³⁺ into the TiO₂ lattice results in the formation of Ti_{1 ? x}Mn_xO₂ solid solution and increased anatase unit cell volume from 136.41 A³ (undoped sample) to 137.25 A³ (Mn/Ti = 0.05). The conductivity of doped TiO₂ rises up to two orders in magnitude.

Nanotubes of bronze titanium dioxide (TiO₂(B)) doped with vanadium were synthesized through hydrothermal reaction. The obtained material possesses mesoporous structure and large specific surface area of 180 m²/g. It was found that the incorporation of vanadium into TiO₂(B) lattice increases the volume of a unit cell. Additionally, the conductivity rose up to three orders of magnitude for doped titanium dioxide reaching the value of 1.70 ? 10 ^{? 8} S/cm.

Using literature information about the temperature effect on the electrochemical behavior of electrodes based on LiFePO₄ and Li₄Ti₅O₁₂ being positive and negative electrodes of a lithium­ion battery, the discharge characteristics of batteries with such electrodes and various ratios of the amount of active material on the electrodes in the temperature range from ?15 to +60°C were calculated.