Author(s)

Néstor Fernández, Purificación Escribano, Eloisa Cordoncillo, Héctor Beltrán, Mario F. García-Sánchez, Issis C. Romero-Ibarra, Nahum Masó

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The lithium ionic conductingLa_0.45Ce_0.1Li_0.27TiO₃ has been synthesized by sol-gel method. This solid is the result of substitutional doping with Ce(IV) in La_0.45Ce_0.1Li_0.27TiO₃ compound. The aim of the replacement of La(III) by Ce(IV) is increase the number of vacancies in the structure and favors the ionic mobility. Structural characterization shows that the obtained material have the expected tetragonal P4/mmm perovskite structure. Chemical analysis shows that composition was homogeneus in all the sample. The bulk conductivity measured at room temperature is about the same as previously reported for its related lanthanum lithium titanate. However, the lower activation energy for ionic conduction encourages further searching for better conductors in this system.

Lithium Ion Conductors; Sol Gel; Impedance Spectroscopy; Perovskite

Fernández, N. , Escribano, P. , Cordoncillo, E. , Beltrán, H. , García-Sánchez, M. , Romero-Ibarra, I. and Masó, N. (2012) Crystal Structure and Electrical Properties of La_0.45Ce_0.1Li_0.27TiO₃ Synthesized by Sol-Gel Technique. New Journal of Glass and Ceramics, 2, 59-64. doi: 10.4236/njgc.2012.21009.