| Electrical Properties and Applications of （ZrO2）0.92 （Y2O3）0.08 Electrolyte Thin Wall Tubes Prepared by Improved Slip Casting Method |
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| 引用本文： | 贺天民,吕喆,刘江,裴力,曲志刚,苏文辉.Electrical Properties and Applications of （ZrO2）0.92 （Y2O3）0.08 Electrolyte Thin Wall Tubes Prepared by Improved Slip Casting Method[J].中国稀土学报(英文版),2003,21(1):31-36. |
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| 作者姓名： | 贺天民 吕喆 刘江 裴力 曲志刚 苏文辉 |
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| 作者单位： | [1]DepartmentofPhysics,JilinUniversity,Changchun130023,China [2]InternationalCenterforMaterialsPhysics,ChineseAcademyofScienee,Shenyang110015,China |
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| 基金项目： | ProjectsupportedbytheNationalPlanningCommitteeofChina ( 85 715 2 1 0 2 )andDepartmentofScienceandTechnology( 2 0 0 0 0 32 2 )ofJilinProvinc |
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| 摘 要： | 8%(mole fraction) yttria-stabilized zirconia electrolyte thin wall tubes were prepared by improved slip casting method. The length and wall thickness of the tubes are 266 mm and 0.4 - 0.9 mm, respectively and the relative density is 96.7 %. The microstructure and electrical properties of samples sintered at different temperatures were studied using SEM and ac impedance spectroscopy. The effect of sintered density, grain and grain boundary on the electrical properties of the samples was analyzed. The research results show that the density of the samples increases gradually with increasing sintering temperatures. The microstructurc of samples strongly influences its electrical properties, and the electrical prop.erties of samples enhance with the increase of sintered density. The ionic conductivity of grain and grain boundary is increased as the sintering temperature increases. Better sinterability of the samples was obtained at the sintering temperature of 1650℃. The maximum open circuit voltage and short circuit current for single cell is 0.946V and 1.84A, respectively. The maximum output power of single cell is 0.46W at the temperature of 850℃.
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| 关 键 词： | 粉浆浇铸 YSZ电解管 电性能 显微结构 SOFC 稀土 应用 氧化钇稳定氧化镐 |
Electrical Properties and Applications of (ZrO2)0.92(Y2O3)0.08 Electrolyte Thin Wall Tubes Prepared by Improved Slip Casting Method |
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| Abstract: | 8%(mole fraction) yttria-stabilized zirconia electrolyte thin wall tubes were prepared by improved slip casting method. The length and wall thickness of the tubes are 266 mm and 0.4～0.9 mm, respectively and the relative density is 96.7%. The microstructure and electrical properties of samples sintered at different temperatures were studied using SEM and ac impedance spectroscopy. The effect of sintered density, grain and grain boundary on the electrical properties of the samples was analyzed. The research results show that the density of the samples increases gradually with increasing sintering temperatures. The microstructure of samples strongly influences its electrical properties, and the electrical properties of samples enhance with the increase of sintered density. The ionic conductivity of grain and grain boundary is increased as the sintering temperature increases. Better sinterability of the samples was obtained at the sintering temperature of 1650 ℃. The maximum open circuit voltage and short circuit current for single cell is 0.946 V and 1.84 A, respectively. The maximum output power of single cell is 0.46 W at the temperature of 850 ℃. |
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| Keywords: | slip casting YSZ electrolyte tubes electri cal properties microstructure SOFC rare earths |
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