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The study of lithium fast ion conductors of Li3xLa0.67−xScyTi1−2yNbyO3 system
Authors:Ronghua Li  Ruiting Chen  Wenji Wang
Affiliation:(1) Department of Chemistry, Fuzhou University, 350002 Fuzhou, Fujian, China
Abstract:Perovskite-type lithium fast ion conductors of Li3xLa0.67−xScyTi1−2yNbyO3 system were prepared by solid state reaction. X-Ray powder diffraction shows that perovskite solid solution form in the ranges of x=0.10, y≤0.10. AC impedance measurements indicate that the bulk conductivities and the total conductivities are of the order of 10−4 S·cm−1 and 10−5 S·cm−1 at 25 °C respectively. The compositions have low bulk activation energies of about 17 kJ/mol in the temperature ranges of 298 – 523 K and total activation energies of about 37 kJ/mol in the temperature ranges of 298 – 523 K.
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