Effect of annealing on Li2O–TiO2–V2O5 electrolyte materials

The 50Li2O–(50−x)TiO2–xV2O5 with x=10, 20, 30 and 40 has been prepared by the solid state reaction method. The conductivity analysis shows metal–semiconductor phase transition around 70°C due to the presence of the VO2 phase. The annealing of the samples at 450°C for 24 h oxidizes the VO2 phase and the semiconductor–metal phase transition vanishes. The model of Rice and Roth has been built up to calculate the mean free path (l), mobility (μ) and diffusion constant (D). The modulus spectrum of the samples shows the non-Debye nature of the samples. The Fourier Transform Infrared (FTIR) spectrum analysis implies the presence of V2O5 phase in the annealed samples.