| EDTA配合法制备beta-Al2O3固体电解质 |
| Synthesis of Beta-Al2O3 Solid Electrolytes by the EDTA Complexing Sol-Gel Method |
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| 摘要: 以金属硝酸盐和乙二胺四乙酸(EDTA)为原料，采用EDTA配合溶胶-凝胶法制备了beta-Al2O3前驱粉料，并利用X射线衍射分析(XRD)、红外光谱分析(FTIR)、热分析(TG/DSC)、交流阻抗谱(EIS)和扫描电镜(SEM)等测试技术对beta-Al2O3的合成工艺进行了详细的研究。结果表明：该法合成beta-Al2O3前驱粉料的温度为1 150 ℃，比固相反应法低了150 ℃，平均粒径约为42 nm，具有较好的成型和烧结性能。将素坯在1 630 ℃保温烧结，得到的烧结体相对密度为96%以上，300 ℃时beta-Al2O3固体电解质的离子电导率为0.026 S·cm-1。 |
| 关键词: 溶胶-凝胶 固体电解质 EDTA beta-Al2O3 |
| 基金项目: |
| Abstract: beta-Al2O3 precursor powders were synthesized by the EDTA complexing sol-gel method at lower temperatures using metal nitrate and EDTA as raw materials. The thermal decomposition mechanism of the gel and the formation process of beta-Al2O3 were investigated by XRD, FTIR, TG/DSC, EIS and SEM. The results showed that beta-Al2O3 precursor powder with the average size of 42 nm was obtained at 1 150 ℃, 150 ℃ lower than the solid state reaction. The precursor powder had good sintering property and the relative density of the electrolyte ceramic up to over 96% can be manufactured at 1 630 ℃. The ionic conductivity at 300 ℃ was 0.026 S·cm-1. |
| Keywords: sol-gel solid electrolyte EDTA beta-Al2O3 |
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| 摘要点击次数: 2009 |
| 全文下载次数: 2807 |
| 朱承飞,薛金花,王 李,王晓钧.EDTA配合法制备beta-Al2O3固体电解质[J].无机化学学报,2010,26(7):1165-1170. |
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