| 甘氨酸-硝酸盐燃烧法制备Beta-Al_2O_3固体电解质研究 |
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| 引用本文： | 朱承飞,洪永飞,薛金花,黄攀,吉光辉.甘氨酸-硝酸盐燃烧法制备Beta-Al_2O_3固体电解质研究[J].材料工程,2016(8):23-28. |
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| 作者姓名： | 朱承飞 洪永飞 薛金花 黄攀 吉光辉 |
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| 作者单位： | 南京工业大学材料科学与工程学院,南京,210009 |
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| 基金项目： | 国家自然科学基金资助项目(21203095)；中国博士后科学基金资助项目(2012 M 511261)；江苏高校优势学科建设工程资助项目(2014(37)) |
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| 摘 要： | 甘氨酸(GNP)为还原剂、硝酸盐为氧化剂,利用甘氨酸-硝酸盐燃烧法制备beta-Al_2O_3前驱粉料。利用热分析(TG/DSC)、X射线衍射分析(XRD)、扫描电镜(SEM)、核磁共振(NMR)和交流阻抗谱(EIS)等测试技术对beta-Al_2O_3的合成工艺进行研究。结果表明:该法合成beta-Al_2O_3前驱粉料的温度为1150℃,比固相反应法低了150℃,平均粒径约为42.0nm,具有较好的成型和烧结性能。将素坯在1620℃保温烧结,得到的烧结体的结构中Al(Ⅳ)和Al(Ⅵ)分别位于δ=45和δ=-6附近,相对密度为97.6%;350℃时的离子电导率为0.046S·cm~(-1)。
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| 关 键 词： | 钠硫电池 固体电解质 beta-Al2 O3 甘氨酸-硝酸盐燃烧法 |
Synthesis of Beta-Al2 O3 Solid Electrolytes by Glycine-nitrate Combustion |
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| ZHU Cheng-fei,HONG Yong-fei,XUE Jin-hua,HUANG Pan,JI Guang-hui.Synthesis of Beta-Al2 O3 Solid Electrolytes by Glycine-nitrate Combustion[J].Journal of Materials Engineering,2016(8):23-28. |
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| Authors: | ZHU Cheng-fei HONG Yong-fei XUE Jin-hua HUANG Pan JI Guang-hui |
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| Abstract: | Beta‐Al2 O3 precursor powders were synthesized by glycine‐nitrate combustion at a low tem‐perature using metal nitrate and GNP as raw materials .The thermal decomposition mechanism of the gel and the formation process of beta‐Al2 O3 were investigated by XRD ,TG/DSC ,SEM ,NMR and EIS .The results show that beta‐Al2 O3 precursor powder with the average size of 42 .0nm can be ob‐tained at 1150℃ ,150℃ lower than the solid state reaction .The precursor powder has good forming and sintering performance .The sample is calcined at 1620℃ ,then the Al(Ⅳ) and the Al(Ⅵ) in the structure of the sample is aroundδ=45 andδ= -6 ,respectively .T he relative density of the sample is 97 .6% .T he ionic conductivity at 350℃ is 0 .046S · cm -1 . |
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| Keywords: | sodium sulfur battery solid electrolyte beta-Al2 O3 glycine-nitrate combustion |
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