| 锂离子导体Li6La2BaTa2O12在潮湿空气中的稳定性研究 |
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| 引用本文： | 景向伟.锂离子导体Li6La2BaTa2O12在潮湿空气中的稳定性研究[J].科学技术与工程,2011,11(17):3951-3954. |
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| 作者姓名： | 景向伟 |
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| 作者单位： | 延安职业技术学院石油工程系,延安,716000 |
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| 基金项目： | 陕西省自然科学基金项目(2010JQ6007); 陕西省教育厅科研项目(2010JK917)资助 |
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| 摘 要： | 利用交流阻抗谱研究锂离子导体Li La2 BaTa2 O12在空气的稳定性。锂离子导体Li6 La2 BaTa2 O12首先在空气中吸附水气进入晶界,导致该材料晶界电阻变大;随后进入晶界中的水气和Li6 La2 BaTa2 O12材料发生质子和锂离子的离子交换反应,导致了晶格的进一步畸变,表现为晶粒电阻直线增加。因此可通过提高陶瓷材料致密度,抑制水气进入晶界,提高该材料对水气的稳定性,这对该材料在全固态锂离子电池中的应用具有十分重要的意义。
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| 关 键 词： | 锂离子导体 稳定性 Li6La2BaTa2O12 |
| 收稿时间： | 2011/3/16 0:00:00 |
| 修稿时间： | 2011/3/21 0:00:00 |
The stability investigation of lithium ion conductor |
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| jingxiangwei.The stability investigation of lithium ion conductor[J].Science Technology and Engineering,2011,11(17):3951-3954. |
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| Authors: | jingxiangwei |
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| Institution: | JING Xiang-wei (Petroleum Engineering Department,Yanan Vocational&Techincal College,Yan'an 716000,P.R.China) |
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| Abstract: | The stability of lithium ion conductor Li6La2BaTa2O12 in air was investigated by AC impedance spectroscopy. Firstly, the water gas in humid air was absorbed on the grain boundary of Li6La2BaTa2O12, leading to the rise of the grain boundary resistance. And then the ion exchanging reaction happened between the proton from water gas on the grain boundary and the lithium ion in Li6La2BaTa2O12, resulting from the crystal lattice aberrance further and the rise of the grain resistance. It can be improved the Li6La2BaTa2O12 stability to water gas by increasing the ceramic tightness to suppressing the water gas into the grain boundary, which is important for the lithium ion conductor Li6La2BaTa2O12 application in all-solid-state lithium ion battery. |
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| Keywords: | lithium ion conductor stability Li6La2BaTa2O12 |
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