Abstract
Lowering the sintering temperature of cathode material for intermediate temperature solid oxide fuel cell (IT-SOFC) is the main concern of current research. In the present work, well-known La0.9Sr0.1MnO3 system as cathode for IT-SOFC was prepared by using mechanochemical synthesis by varying the grinding time. The pure phase La0.9Sr0.1MnO3 forms after dry milling at 24 h with 500 rpm. X-ray diffraction confirms single crystalline rhombohedral phase of as-synthesized and sintered La0.9Sr0.1MnO3. Sintering at 700 °C improves the degree of crystallinity. Scanning electron microscope images of as-synthesized samples reveal highly agglomerate fine-scale grains. The temperature dependence of DC conductivity curve exhibits linear dependence of conductivity with temperature.
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