Structural, thermal and electrical properties of La0.80Sr0.20MnO3 cathode of SOFCs

La0.80Sr0.20MnO3 perovskite material is synthesized by conventional solid state reaction method. Raw materials in stoichiometric ratio are ball milled with use of zirconium oxide balls for six hours. Calcined powder pelletized and then sintered furnace at 1400°C 2 Sintered pellets characterized study density, phase identification, crystalline size, microstructure, electric thermal properties. Crystalline size the as prepared sample found to be 52 nm. Thermo-gravimetric analysis shows weight loss material. Thermal expansion coefficient 8.45×10−6 °C−1. Observed value activation energy LSM 0.18 eV which indicate electronic conductive behavior can used cathode SOFCs.