Abstract :
Uniform, adherent, single phase samarium doped ceria films have been successfully deposited by spray pyrolysis technique for their application
in solid oxide fuel cell. These films have been deposited at different substrate temperatures on glass substrate and subsequently heat treated in tube
furnace. Effect of substrate temperature and annealing temperature on phase formation was studied with thermo-gravimetric analysis and
differential temperature analysis, X-ray diffraction, scanning electron microscope, and energy dispersive X-ray analysis techniques. These studies
showed the formation of single phase Ce0.8Sm0.2O1.9 films, at substrate temperature 400 8C and annealing temperature 550 8C. Electrical resistivity
of the films, at room temperature was of the order of 107 V cm while at 400 8C it is found to be of the order of 101 V cm. This reveals the use of
these films for making low temperature solid oxide fuel cells.
Keywords :
Spray deposition technique , Solid oxide fuel cell , CeO2 based ceramics , Samarium doped ceria films
