부산대학교 도서관

Material fabrication and properties of this material are mostly affecting the requirement of the material, used for development of the component of the solid oxide fuel cell, mostly used as non-conventional energy source. Cathode material La0.90Sr0.10MnO3 has been synthesized by well-known solid state method. Structural properties of the material have been obtained by x-ray diffraction and scanning electron microscopy which confirmed the crystalline nature, nano-sized and porous material. All peaks obtained from X-ray diffraction has been identified single phase of the material. Density plays an important role while material used as cathode, and has been found by the use of Archimedes’s principle. Stability of the material is also an important parameter, and thermal gravimetric analysis confirmed the weight loss during sintering. Dielectric as well as conductive performance of the perovskite has been confirmed by the impedance spectroscopy. Dielectric study confirmed that the material obey non-Debye relaxation behavior. Conductivity more than 100 S/cm at 800 °C temperature, and activation energy 0.19 eV inveterate, as fabricated material is best material for the use of cathode component of the solid oxide fuel cell.