DEVELOPMENT AND CHARACTERIZATION OF TITANIUM PHOSPHATES (TIP2O7) AND LITHIUM TITANIUM PHOSPHATE (LITIP2O7) AND THEIR THERMAL AND ELECTRIC PROPERTIES.

In this present study, the Titanium phosphates (TiP2O7) and Lithium titanium phosphate (LiTiP2O7) materials were synthesized by using soft hydrothermal method at moderate pressure and temperature conditions. The resultant materials were characterized by using P-XRD, SEM, EDAX, FTIR, TGA, DSC and Electrochemical impedance spectra (EIS). From P-XRD, confirms the well crystalline rhombohedral phase and was found to be in the range below 100 nm. FTIR spectra indicated that there is an increase in the degree of splitting and stretching of the vibration bands, whereas the splitting of vibration bands and polymerization of [PO4] decreased as the Ti ions. The TGA/DSC studies revealed that, these materials display endothermic reactions due to the liberation of ligands and diffusion. Thermal stability of the materials improved and the dielectric constant decreases. AC conductivity measurements for both the samples were carried and results are plotted. From AC conductivity studies, it is observed that the ionic conductivity of dc conductance of sample was measured show the frequency dependence dc capacitance of LiTiP2O7 material. The frequency response dc capacitance also depends on doping with titanium.