Conductivity of F-doped New Perovskite Lithium Fast Ion Conductor Based on Li_(3x)La_(2/3-x)TiO_3

• 作 者: 张玉荣 陈宇
• 机 构: College of Chemistry and Chemical Engineering Fuzhou University,College of Chemistry and Chemical E
• 出 处: Journal of Rare Earths
• 发表日期: 2006年S2期
• 关键词: perovskite tetragonal lithium nominal impedance electrolyte migration ionic stru

New perovskite lithium ion conductors with nominal formula of Li4xLa2/3-xTiO3Fx were prepared by solid state reaction. XRD analysis shows that a tetragonal perovskite-structured phase exits in the studied composition range of 0.05≤x≤0.14 and the composition of perovskite phase depends on the amount of F. AC impedance measurement indicates that the sample of x=0.13 possesses the highest ionic conductivity of 2.32×10-4 S·cm-1 at room temperature.

New perovskite lithium ion conductors with nominal formula of Li4xLa2 / 3-xTiO3Fx were prepared by solid state reaction. XRD analysis shows that a tetragonal perovskite-structured phase exits in the studied composition range of 0.05≤x≤0.14 and the composition of perovskite phase depends on the amount of F. AC impedance measurement indicates that the sample of x = 0.13 possesses the highest ionic conductivity of 2.32 × 10 -4 S · cm -1 at room temperature.