TY - JOUR
T1 - Influence of citrate/nitrate ratio on the preparation of Li 0.5La0.5TiO3 nanopowder by combustion method
AU - Milian Pila, Carlos R.
AU - Otero, Teobaldo Mariño
AU - Pérez Cappe, Eduardo
AU - Alves, Oswaldo Luiz
AU - Aranda, Pilar
AU - Frutis, Miguel Aguilar
AU - Laffita, Yodalgis Mosqueda
N1 - Funding Information:
This work has been partially supported by the CONACYT (Projects: # 129227 , # 17424 and #148997 ) and SIP-IPN (Project: 20111101 ), CICYT (Spain project MAT2012- 31759 ) and CNPq-MES Project # 490522/2010-6 .
PY - 2014/1
Y1 - 2014/1
N2 - Preparation of nano-crystalline Li0.5La0.5TiO 3 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.
AB - Preparation of nano-crystalline Li0.5La0.5TiO 3 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.
KW - A. Powders: chemical preparation
KW - C. Impedance
KW - D. Perovskite
KW - E. Batteries
UR - http://www.scopus.com/inward/record.url?scp=84887621696&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2013.05.131
DO - 10.1016/j.ceramint.2013.05.131
M3 - Artículo
SN - 0272-8842
VL - 40
SP - 249
EP - 256
JO - Ceramics International
JF - Ceramics International
IS - 1 PART A
ER -