| Synthesis and Electrical Properties of La0.8Sr0.2-xCaxCo0.9Fe0.1O3-δ |
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| 引用本文： | 谢刚,马文会,陈书荣,崔衡,张雄飞.Synthesis and Electrical Properties of La0.8Sr0.2-xCaxCo0.9Fe0.1O3-δ[J].中国稀土学报(英文版),2003,21(1):94-97. |
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| 作者姓名： | 谢刚 马文会 陈书荣 崔衡 张雄飞 |
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| 作者单位： | Faculty of Materials and Metallurgy Engineering Kunming Univer sity of Science and Technology，Faculty of Materials and Metallurgy Engineering Kunming Univer sity of Science and Technology，Faculty of Materials and Metallurgy Engineering Kunming Univer sity of Science and Technology，Faculty of Materials and Metallurgy Engineering Kunming Univer sity of Science and Technology，Faculty of Materials and Metallurgy Engineering Kunming Univer sity of Science and Technology Kunming 650093，China，Kunming 650093，China，Kunming 650093，China，Kunming 650093，China，Kunming 650093，China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina ( 5 0 0 740 19、5 0 2 0 40 0 7) |
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| 摘 要： | Ａｎｉｍｐｏｒｔａｎｔｇｏａｌｉｎｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｓｏｌｉｄｏｘ ｉｄｅｆｕｅｌｃｅｌｌｓ (ＳＯＦＣｓ)ｉｓｔｏｒｅｄｕｃｅｔｈｅｏｐｅｒａｔｉｎｇｔｅｍ ｐｅｒａｔｕｒｅｏｆｔｈｅｆｕｅｌｃｅｌｌｓｔａｃｋｆｒｏｍ 10 0 0℃ｔｏｂｅｌｏｗ85 0℃ｓｏａｓｔｏｇｅｔａｎｏｐｔｉｍｕｍｔｒａｄｅ ｏｆｆｂｅｔｗｅｅｎｐｅｒ ｆｏｒｍａｎｃｅａｎｄｌｉｆｅｔｉｍｅｏｆｔｈｅｓｔａｃｋａｎｄｔｏｒｅｄｕｃｅｔｈｅｏｖｅｒａｌｌｓｙｓｔｅｍｃｏｓｔ1] .Ｔｏａｃｈｉｅｖｅｔｈｉｓｄｅｓｔｉｎａｔ…
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| 关 键 词： | La0.8Sr0.2-xCaxCo0.9Fe0.1O3-δ 镧合金 物理化学 稀土 固体氧化燃料电池 |
Synthesis and Electrical Properties of La0.8Sr0.2-xCa xCo0.9Fe0.1O3-δ |
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| Abstract: | Effects of small amount of Ca doping in La site in LaCoO3-based oxide on the synthesis and electrical conductivity were investigated by using X-ray diffraction (XRD), differential scanning calorimetry and thermogravimetry (DSC/TG), ordinary four-probe dc measurement methods. La0.8Sr0.2-xCaxCo0.9Fe0.1O3-δ (LSCCF, 0≤x≤0.1) prepared by solid reaction synthesis is all of a single phase and the calcined process may be divided into three stages: (1) decomposition of reactants; (2) formation of LaCoO3-based oxides; and (3) formation of LSCCF solid solution. The maximum of electrical conductivity of the LSCCF composites is above 100 S*cm-1 and the conduction mechanism is attributed to the adiabatic-hopping of p-type small polarons. |
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| Keywords: | material physical chemistry solid reaction synthesis compositely doped material solid oxide fuel cells rare earths |
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