Sentez Yöntemi ile LSAF Perovskit Morfolojisinin Ayarlanması

Abstract

Lanthanum strontium aluminum ferrite $(La_{0.8}Sr_{0.2}Al_{0.2}Fe_{0.8}O_{3±δ}-LSAF)$ perovskites are drawing attention as cathodes in solid oxide fuel cells (SOFCs). The structural properties of these materials are mostly counting on the methods of preparation. In this study, two different preparation methods namely hydrothermal and sol-gel were applied to prepare LSAF perovskite. The characterization results including scanning electron microscopy (SEM), N2 adsorption-desorption, and Fourier transform infrared spectroscopy (FT-IR) are investigated in detail. The results showed that the preparation method played an important role on the microstructure of the LSAFs. It can be highlighted that the hydrothermal method is more successful in obtaining quite small nanoparticles.