| 凝胶-浇注法制备LaxSr1-1.5xTiO3阳极材料及其性能的研究 |
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| 引用本文： | 王菲,俞建长.凝胶-浇注法制备LaxSr1-1.5xTiO3阳极材料及其性能的研究[J].福州大学学报(自然科学版),2012,40(2):270-274. |
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| 作者姓名： | 王菲 俞建长 |
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| 作者单位： | 福州大学材料科学与工程学院 |
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| 基金项目： | 福建省高新技术基金资助项目(2004H008) |
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| 摘 要： | 采用凝胶-浇注法合成钙钛矿复合系的阳极材料LaxSr1-1.5xTiO3(x=0.1～0.4),探究La掺杂量对相组成、烧结性能、力学性能及高温电导率等的影响.LaxSr1-1.5xTiO3粉体在1 100℃下预烧可得到典型的钙钛矿结构.在1 400℃下煅烧得到的烧结体的电导率数据显示:当x=0.3时电导率最高,在测试温度为800℃时高达180 S.cm-1,与传统固相法相比,其烧结温度降低了约200℃.
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| 关 键 词： | 阳极材料 凝胶-浇注法 SrTiO3 电导率 |
Synthesis and properties of LaxSr1-1.5xTiO3 as an anode material for SOFCs by gel-casting method |
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| WANG Fei,YU Jian-chang.Synthesis and properties of LaxSr1-1.5xTiO3 as an anode material for SOFCs by gel-casting method[J].Journal of Fuzhou University(Natural Science Edition),2012,40(2):270-274. |
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| Authors: | WANG Fei YU Jian-chang |
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| Institution: | (College of Materials Science and Engineering,Fuzhou University,Fuzhou,Fujian 350108,China) |
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| Abstract: | The La2O3 doped SrTiO3 perovskite compounds LaxSr1-1.5xTiO3(x=0.1~0.4) are synthesized by gel-casting.The effects of dopant amount on the phase composition,sintering properties,mechanical properties and high temperature conductivity of La-doped SrTiO3 are investigated.The results indicate that LaxSr1-1.5xTiO3 powders with perovskite structure are obtained when the dried gels are calcined at 1 100 ℃.The conductivity of LaxSr1-1.5xTiO3 calcined at 1 400 ℃ reveals that the conductivity reaches 180 S·cm-1 at 800 ℃ when the content of La2O3 is 30%.Compared with the traditional solid method the sintering temperature is 200 ℃ lower. |
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| Keywords: | anode material gel-casting method SrTiO3 conductivity |
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