| Summary: | 碩士 === 國立交通大學 === 材料科學與工程學系所 === 107 === In last decade, Solid Oxide Fuel Cell becomes a potential and environmental friendly solution for energy issue. Due to its high operating temperature, the compatibility between electrode and electrolyte material should be well concerned. Among all, the combination of lanthanum strontium cobalt ferrite oxide (La1-xSrxCo1-yFeyO3,LSCF) and yttria-stablized zirconia (8mole%Y2O3-YSZ) draw many attentions since their outstanding ion conductivity performance. However, large thermal expansion coefficient difference reduced the life time and efficiency of device. In our study, we create a thermal expansion coefficient gradient LSCF structure by pulsed laser deposition to solve this problem. Finally, Electrochemistry Impedance Spectroscopy will be used to confirm that thermal expansion coefficient gradient LSCF can solve compatibility problem between two materials.
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