| 溶胶-凝胶法合成Li_4SiO_4 |
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| 引用本文： | 宋秀芹,陈汝芬,贾密英. 溶胶-凝胶法合成Li_4SiO_4[J]. 应用化学, 2000, 0(3) |
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| 作者姓名： | 宋秀芹 陈汝芬 贾密英 |
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| 作者单位： | 河北师范大学化学系!石家庄050016 |
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| 基金项目： | 河北省自然科学基金! (2 96 16 9) |
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| 摘 要： | Li4SiO4具有有利于离子传导的结构,为锂离子导体理想的基质材料[1].在硅酸盐体系中,硅的聚合态很复杂,难以得到纯相,鉴于固相法操作简单,在已有的文献中,合成方法多为固相法,但固相法不易保证成份的准确性、均匀性且合成温度较高.溶胶-凝胶法是近几年来发展起来的湿化学合成方法,用此法合成离子导体具有纯度高、均匀性好、颗粒小、反应过程易于控制等优点[2],而通常的溶胶-凝胶法是用金属醇盐与有机盐为前驱物,这样成本较高,且易造成污染.本文用金属醇盐及无机盐为前驱物,用溶胶-凝胶法合成了Li4SiO4纯相,并同一般固相法相比较,对合成的…
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| 关 键 词： | Li_4SiO_4 溶胶-凝胶法 合成 离子导电性 |
Synthesis of Li_4SiO_4 by Sol-Gel Method |
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| SONG Xiu Qin ,CHEN Ru Fen,JIA Mi Ying. Synthesis of Li_4SiO_4 by Sol-Gel Method[J]. Chinese Journal of Applied Chemistry, 2000, 0(3) |
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| Authors: | SONG Xiu Qin CHEN Ru Fen JIA Mi Ying |
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| Affiliation: | SONG Xiu Qin *,CHEN Ru Fen,JIA Mi Ying |
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| Abstract: | The Li 4SiO 4 has been prepared by the sol gel method and characterized by IR, DTA, TG, XRD, SEM and AC impedance measurements. The results showed that in comparison with the solid state method Li 4SiO 4 could be obtained by sol gel method at lower temperature and the products exhibited smaller particle size and higher ionic conductivity. |
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| Keywords: | Li 4SiO 4 sol gel method synthesis ionic conductivity |
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