Editors: | Kongoli F |
Publisher: | Flogen Star OUTREACH |
Publication Year: | 2014 |
Pages: | 578 pages |
ISBN: | 978-1-987820-07-2 |
ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Oxide ion conductors are the important class of materials that can be used as an electrolyte in SOFC applications. The conductivity in these types of electrolytes is mainly due to motion of ions. So, the development of a suitable electrolyte that can operate at intermediate temperature range, Ba-doped lanthanum indate has been prepared by solid state reaction method. X-ray analysis and Reitveld refinement were used to confirm the desired phase formation. The Ac-impedance technique was used to verify the electrical conduction behavior of the synthesized system. The curved behavior of the oxygen ion conductivity was observed in the Arrhenius plot. Therefore, the activation energy in the low-temperature region is higher than that in the high temperature region. The defect-cation association is the reason for higher activation energy of ionic conduction in the present system.