Effect of fabrication parameters on the electrical conductivity of YxSr1−xTiO3 for anode materials |
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| Authors: | Xianliang Huang Wei Shen Weijiang Wu |
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| Institution: | Department of Inorganic Nonmetallic Materials, University of Science and Technology Beijing, Beijing 100083, PR China |
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| Abstract: | Yttrium-doped strontium titanate (YxSr1−xTiO3), as probable anode material for SOFC, was prepared by solid-state reaction. The solubility of yttrium in SrTiO3 at different temperatures was examined and the electrical conductivities of YxSr1−xTiO3 were measured from 500 to 1000 °C. The effects of doping amount, fabrication atmosphere, and sintering temperature on the electrical conductivity of YxSr1−xTiO3 were investigated. YxSr1−xTiO3 with x=0.08 was found to give the maximum electrical conductivity, 71 S/cm at 800 °C in pure hydrogen. Reducing atmospheres and appropriate sintering temperatures play a positive role in improving the electrical conductivity. |
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| Keywords: | A Inorganic compounds B Chemical synthesis C X-ray diffraction D Defects D Electrical conductivity |
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