Open Access

Studies on La2In2-xAl2O9 Oxide Ion Conductors

N. Kalaivani, Department of chemistry, Government Arts College, Dharmapuri, TN, India. M. Rajasekhar kalaikanishka2010@gmail.com
Department of chemistry, Government Arts College, Dharmapuri, TN, India.

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Abstract

La₂In_2-xAl₂O₉ (0 ≤ x ≤ 0.5) oxide ion conductor is synthesized with La(NO₃)₃, In(NO₃)₃, Al(No₃)₃and aspartic acid (fuel) by assisted combustion method which is heating at 550ËšC for 6 hours. X-ray diffraction analysis indicates that the orthorhombicstructure of La₂In_2-xAl₂O₉. Scanning electron microscopy is used to identify the surface morphology. The particle size of the synthesized product is measured by Scherrer equation and transmission electron microscope, its size 30 nm. The influence of the Al for Indium in La₂In_2-xAl₂O₉ of the phase transition has investigated by XRD studies. The formation of La₂In_2-xAl₂O₉ is confirmed by FTIR studies. The Arrhenius plot shows the ionic conductivity of La₂In_2-xAl₂O₉ on variation of temperature. This result indicates that assisted combustion method is a promising method to prepare nanocrystalline La₂In_2-xAl₂O₉ oxide ion conductor for solid oxide fuel cell.

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Reference

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