Lanthanum Strontium Cobalt Ferrite (LSCF) perovskites by Sol-Gel Method for Potential Application in Solid Oxide Fuel Cells (SOFC)

Fuel cells are one of the most efficient and effective solutions to environmental problems high energy demand. They devices which change chemical into electrochemical energy, allowing much higher efficiency than conventional thermomechanical conversion methods. Lanthanum Strontium Cobalt Ferrite (LSCF) perovskites have been widely studied for application as cathodes in solid oxide fuel (SOFC) due their electrical conductivity, thermal stability, low difference expansion coefficient, physico-chemical compatibility with other components. The aim this work was synthesize perovskitas type La0.7Sr0.3Co0.5Fe0.5O3 by sol-gel method evaluate potential a cathode cell. results obtained X-ray powder diffraction (XRD) indicate that calcined at 900ºC an amount perovskite phase above 95%. Field Emission Gun-Scanning Electron Microscope (FEG-SEM) images LSCF film produced 4 layers showed better quality. Thus, XRD FEG-SEM, has cells.