The Effect of Mechanical Milling Period on Conductivity of Li2O-Ti02-P205 System

摘要

One of the most important criteria in determining the best electrolyte is by obtaining good value of conductivity. In this research, Li_2O-TiO_2-P_2O_5 system will be prepared in order to find the optimum composition and heat treatment of the samples that gives good conductivity value. The effects of mechanical milling period on glass-ceramics electrolyte in the system Li_2O-TiO_2-P_2O_5 have been investigated using X-Ray differential analysis and electrochemical impedance spectroscopy. Mechanical milling (MM) method was used to prepare the system which was converted into glass-ceramics by milled at several periods of time from 2 hours to 8 hours. Some crystalline phases with slight amorphous nature were detected in samples prepared by mechanical milling for 8 hours while single phase of LiTi2(PO4)3 were obtained from samples that underwent further heat treatment. The sample treated at 250°C for 4 hours obtained highest conductivity with a value of 1.12 x 10~(- 4) Scm~(-1). The activation energy was found to be as low as 0.08eV.