| 电解质材料Sr-和Mg-掺杂LaGaO3的制备及性能研究 |
| Synthesis and Properties of Sr- and Mg-doped LaGaO3 Materials |
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| 摘要: |
| 关键词: SOFC LSGM 电解质材料 |
| 基金项目: |
| Abstract: A dense La0.8Sr0.2Ga0.83Mg0.17O2.815 electrolyte in pure perovskite phase was prepared by a polyacrylic acid assisted solid state reaction method, and the effects of La source on the structure and electrochemical performance were also studied. By means of XRD and SEM, the structure of this material was characterized, and the electrochemical properties were studied through AC impedance diagram. The results show that the sample presents a single perovskite-type phase after sintering at 1 450 ℃ and the relative density is 94%. The specimen has the lower activate energy and higher electrical conductivity at 600 ℃. There are two different activation energy at the turning point of 650 ℃, which are 74.6 and 42.4 kJ·mol-1, respectively. The electrical conductivity is 0.057 S·cm-1 and 0.017 S·cm-1 at the temperature of 800 ℃ and 600 ℃, respectively. |
| Keywords: SOFC LSGM electrolyte |
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| 闫瑞强,李灵,刘杏芹,孟广耀.电解质材料Sr-和Mg-掺杂LaGaO3的制备及性能研究[J].无机化学学报,2006,22(3):542-545. |
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