| 溶剂对离子液体电化学电容器电解液的影响 |
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| 引用本文： | 孙国华,李开喜,谷建宇,范慧,刘越.溶剂对离子液体电化学电容器电解液的影响[J].电子元件与材料,2007,26(9):39-42. |
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| 作者姓名： | 孙国华 李开喜 谷建宇 范慧 刘越 |
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| 作者单位： | 中国科学院,山西煤炭化学开究所,炭材料重点实验室,山西,太原,030001;中国科学院,研究生院,北京,100039;中国科学院,山西煤炭化学开究所,炭材料重点实验室,山西,太原,030001 |
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| 摘 要： | 研究了有机溶剂乙腈(AN)、丙酮(Acet)]对离子液体1-乙基-3-甲基咪唑四氟硼酸盐(EMIm)BF4]电导率和电化学性能的影响。混合电解液体系的电导率在离子液体与有机溶剂的摩尔比为4∶6时达最大值。循环伏安和恒流充放电测试结果表明,添加有机溶剂在很大程度上改善了电容器的电容特性。电容器的比电容在(EMIm)BF4与AN或Acet的摩尔比为4∶6时达最大值,分别为233,173F/g。
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| 关 键 词： | 电子技术 电化学电容器 离子液体 有机溶剂 比电容 |
| 文章编号： | 1001-2028（2007）09-0039-04 |
| 修稿时间： | 2007-06-05 |
Electrochemical performance of ionic liquid containing solventas the electrolyte of capacitors |
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| SUN Guo-hua,LI Kai-xi,GU Jian-yu,FAN Hui,LIU Yue.Electrochemical performance of ionic liquid containing solventas the electrolyte of capacitors[J].Electronic Components & Materials,2007,26(9):39-42. |
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| Authors: | SUN Guo-hua LI Kai-xi GU Jian-yu FAN Hui LIU Yue |
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| Affiliation: | 1. Key Laboratory for Carbon Materials, Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Influence of organic solvent acetonitrile (AN) and acetone (Acet) on the conductivity and electrochemical performance of ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIm)BF4were investigated. The conductivity of mixed electrolyte systems was influenced by the content of organic solvent,and the largest conductivity value occurred when the molar ratio of ionic liquid and organic solvent reach 4∶6. Cyclic voltammetry and galvanostatic charge/discharge measurement results indicate organic solvent could improve capacitance characteristic of EC to some extent. Specific capacitance of EC are changed with the content of organic solvent,and the largest specific capacitance occur at the molar ratio of 4∶6,and were 233,173 F·g-1,respectively. |
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| Keywords: | electron technology electrochemical capacitor(EC) ionic liquid organic solvent specific capacitance |
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