In this paper, the synthesis of La0.6Sr0.4FeO3-δ is carried out. It is concluded that LSF not only has the thermal expansion coefficient close to the electrolyte and the long-term stability is very satisfactory, but also has high oxygen reduction catalytic activity, Although the conductivity of Fe-based materials is not better than that of Co-based materials, and its compatibility with the electrolyte is not very good, but because it has  a  very similar thermal expansion coefficient and low polarization resistance, it is not only applicable to CeO2 Electrolytes, but also for ZrO2-based electrolytes. So it makes it a good choice in the medium temperature range. Therefore, the cathode material La0.6Sr0.4FeO3-δ was synthesized, characterized and tested. X-ray diffraction (XRD) and scanning electron microscopy (SEM) of the material were studied. It was found that it was a relatively  dense perovskite single-phase material, and the DC resistance of La0.6Sr0.4FeO3-δwas tested. (135.13 S • cm-1) at 500oC, and the conductivity activation energy of the material is 0.122 eV calculated by Arrhenius equation. According to the cathode material of solid oxide fuel cell The conductivity required at 102, so this test prepared by La0.6Sr0.4FeO3-δ can be used as a cathode material.

Key words: Ferrite, Solid Oxide Fuel Cell, Cathode Material, LSF

目录

第一章绪论 1

1.1研究背景与进展 1

1.2固体氧化物燃料电池的概述 2

1.2.1固体氧化物燃料电池基本的工作原理 2

1.2.2固体燃料电池发展的现状 3

1.2.3固体氧化物燃料电池的阴极材料的概述 5

1.3铁酸盐作为固体氧化物燃料电池阴极的应用前景 6

1.4固体氧化物燃料电池阴极LSF的制备方法 7

1.4.1溶胶—凝胶法 7

1.4.2甘氨酸—硝酸盐法（GNP） 8

1.4.3固相反应烧结法（SSRS） 8

1.5实验的目的和意义 9

第二章实验原料与仪器 10

2.1原料 10

2.2实验仪器 10

2.3实验测试方法 11

2.3.1X射线衍射测试（XRD） 11

2.3.2扫描电镜测试（SEM） 11

2.3.3直流电阻测试 12

2.4样品制备 13

2.4.1具体实验步骤 13

2.4.2注意事项 13

第三章样品的表征及其电学性能 15

3.1La0.6Sr0.4FeO3-δ的表征与分析 15

3.1.1X射线衍射测试（XRD）的表征与分析 15

3.1.2扫描电镜图（SEM）的表征与分析 16

3.1.3电导性能的测试 16

结论 19

致谢 20

参考文献 21

第一章绪论

1.1研究背景与进展

在如今经济全球化的进程下，我们国家正面临着严峻的能源压力：过度依赖化石燃料、低效的资源利用率、新能源占比使用率低等问题。而石油和煤炭等不可再生能源的特性就决定了我们国家不可能一直依赖这些非再生能源。因此，就目前来看，我们国家的首要问题就是寻找与开发新能源和提高资源能效比。 铁酸盐作为SOFC阴极材料的电输运行为(2):http://www.youerw.com/wuli/lunwen_204948.html