Record number :
Title of article :
Influence of citrate/nitrate ratio on the preparation of Li0.5La0.5TiO3 nanopowder by combustion method
Author/Authors :
Carlos. R. Milian Pila، نويسنده , , Teobaldo Mari?o Otero، نويسنده , , Eduardo Pérez Cappe، نويسنده , , Oswaldo Luiz Alves، نويسنده , , Pilar Aranda، نويسنده , , Miguel Aguilar Frutis، نويسنده , , Yodalgis Mosqueda Laffita، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
From page :
To page :
Abstract :
Preparation of nano-crystalline Li0.5La0.5TiO3 perovskite material using citrate–nitrate redox reaction by the combustion technique is reported. The role of the ammonium nitrate concentration used to co-precipitate the Li0.5La0.5Ti-citrate precursor is revealed by ATD/TG, XRD, SEM-EDX and HRTEM techniques. Thermo-gravimetric analysis data show how the intensity of the exothermic peak associated with the citrate–nitrate redox reaction decreases until disappearance as the citrate/nitrate molar ratio increases. The XRD study indicates that a single-phase cubic Li0.5La0.5TiO3 phase is formed at 350 °C when the citrate/nitrate ratio varies between 0.13 and 0.17. The formed Li0.5La0.5TiO3 powders show an average particle size of 15–20 nm. Electrochemical impedance spectroscopy technique reveals a relative high ionic conductivity inside the grain for the nanometric Li0.5La0.5TiO3 material, with values of around 10−4 S/cm at room temperature.
Keywords :
A. Powders: chemical preparation , E. Batteries , D. Perovskite , C. Impedance
Journal title :
Ceramics International
Serial Year :
Link To Document :