摘要
用硅溶胶和聚乙烯醇缩聚反应生成的溶胶、凝胶制备了固体电解质钠快离子导体(natrium super ionic conductor,Nasicon)。用热重-差热、X射线衍射、透射电镜等现代分析方法表征锻烧温度为800～1000℃,锻烧时间为2～8h Nasicon粉体的相结构和形貌。与传统的由正硅酸乙酯水解、缩聚反应生成的溶胶、凝胶制得的Nasicon粉体的对比,发现:用硅溶胶和聚乙烯醇反应制得的Nasicon粉体相的纯度更高,粉体颗粒粒径在80～100nm,并且颗粒分散均匀、大致成球形,为今后制备性能良好的传感器创造了条件。
Solid electrolyte natrium super ionic conductor （Nasicon） was prepared by the polycondensation of silica sol and polyvinyl alcohol via a sol-gel route. Modem analytical methods of thermogravimetric-differential thermal analysis, X-ray diffraction and transmission electron microscope were employed to characterize the Nasicon powders calcined in the range of 800-1 000 ℃ for 2- 8 h, which were then compared with the Nasicon powders prepared by the hydrolysis-polycondensation of tetraethyl orthosUicate. It was found that the higher purity of phase and 80-100 nm of homogenous round grains could be obtained by the method of silica sol and polyvinyl alcohol. This provided insights into the preparation of gas sensors with better performance in the future.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2007年第3期354-357,共4页
Journal of The Chinese Ceramic Society
关键词
钠快离子导体
溶胶壤胶
硅溶胶
固体电解质
natrium super ionic conductor
sol-gel
silica sol
solid electrolyte
