| Li2MgxZn1-xSiO4离子导体材料的合成与表征 |
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| 引用本文： | 刘胜峰,方杰,韩效钊,陈心昭. Li2MgxZn1-xSiO4离子导体材料的合成与表征[J]. 化工学报, 2003, 54(11): 1658-1660 |
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| 作者姓名： | 刘胜峰 方杰 韩效钊 陈心昭 |
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| 作者单位： | 合肥工业大学化工学院;机械学院，安徽 合肥 230009 |
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| 基金项目： | 教育部留学回国人员科研启动基金[教外司留(2 0 0 2 ) 2 47号 ]，合肥工业大学人才引进、选拔培养专项基金(No 10 60 3 5 0 0 3 )资助~~ |
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| 摘 要： | 引 言Li4 SiO4 具有有利于离子传导的结构 ,是锂离子导体理想的基质材料[1～ 5] 而用M2 +(M =Zn ,Mg等 )部分取代Li4 SiO4 中的Li+离子 ,在一定的范围内所形成的固溶体可大大提高材料的离子导电性 ,且其导电性随取代量的增加而增高[6 ] 文献报道的合成方法多为固相法 ,但固相法不易保证成分的准确性、均匀性 ,且合成温度较高 低温软化学合成法已经成为目前新型功能性固体材料制备的主要方法 ,利用该方法 ,在较缓和的条件下获得了如薄膜、纳米材料、陶瓷和磁性材料等多种形式的无机功能材料[7] 其中溶胶 凝胶法是近年来发展起来的…
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| 关 键 词： | 双掺杂体系 离子导电性 柠檬酸溶胶-凝胶法 |
| 文章编号： | 0438-1157(2003)11-1658-03 |
| 收稿时间： | 2002-09-09 |
| 修稿时间： | 2002-09-09 |
ANALYSIS OF Li2MgxZn1-xSiO4 ION CONDUCTOR MATERIALS SYNTHESIZED BY CITRATE SOL-GEL METHOD |
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| LIU Shengfeng,FANG Jie,HAN Xiaozhao,CHEN Xinzhao. ANALYSIS OF Li2MgxZn1-xSiO4 ION CONDUCTOR MATERIALS SYNTHESIZED BY CITRATE SOL-GEL METHOD[J]. Journal of Chemical Industry and Engineering(China), 2003, 54(11): 1658-1660 |
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| Authors: | LIU Shengfeng FANG Jie HAN Xiaozhao CHEN Xinzhao |
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| Abstract: | The Li2MgxZn1-xSiO4 (x=0.2—0.8) single-phase ion conductor materials were prepared by the sol-gel method.The powder samples were characterized by TG-DTA﹑XRD and TEM.Ionic conductivity of the sinter was determined by means of AC impedance technique. The experiment showed that the heating temperature was only 800℃ for the samples prepared by the sol-gel method with the average particle size of 100nm,and it has successfully reduced by 350℃ compared with the traditional solid-reaction method.Ionic conductivity of the materials could be improved by the double-doped system of Mg,Zn. |
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| Keywords: | double doped system ionic conductivity citrate sol gel method |
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