Síntese e caracterização de La1-X SrX MnO3±δ e La1-X SrX Co1-Y FeY O3-δ utilizados como catodo em células a combustível de óxido sólido

摘要: In the synthesis of ceramic materials, new challenges are related with intrinsic properties. Consequently, researchers look for alternative materials adjusted characteristics components in solid oxide fuel cells. Currently, most studied as cathode oxides: La1-XSrXMnO3±δ and La1-XSrXCo1-YFeYO3-δ. this work, nitrates respective chemical elements were used raw materials. The objective work is to present physical, microstructural these prepared by citrate technique. main analyses utilized were: thermogravimetric analysis, differential scanning calorimetry, gas helium picnometry, X-ray fluorescence spectroscopy, adsorption, laser scattering granulometry, diffraction electron microscopy. results show that compositions homogeneous particles little residual carbon, suitable specific surface area particle size less than 1 mm. properties compatible literature information. composition synthesized technique may be useful preparing suspensions thin films.