| 一种新型有机硅离子液体电解液在超级电容中的应用 |
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| 引用本文： | 仲皓想,赵春宝,骆浩,张灵志*. 一种新型有机硅离子液体电解液在超级电容中的应用[J]. 物理化学学报, 2012, 28(11): 2641-2647. DOI: 10.3866/PKU.WHXB201207181 |
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| 作者姓名： | 仲皓想 赵春宝 骆浩 张灵志* |
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| 作者单位： | Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China |
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| 基金项目： | 国家自然科学基金(50973112);广州市科技计划项目(11A44061500);中国科学院院地合作项目(2010(8));中国科学院百人计划项目资助~~ |
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| 摘 要： | 设计合成了一种新型有机硅室温离子液体(SiN1IL), 并对其化学结构和电化学窗口进行表征, 通过与具有高介电常数的丙烯碳酸酯(PC)/低粘度的乙腈(AN)匹配组成电解液, 其离子电导率达到商业实际应用的要求(19.6 mS·cm-1). 对以活性炭(AC)为对称电极的超级电容器的电化学性能测试表明, SiN1IL 基电解液与活性炭有很好的界面相容性, 其高倍率充放电、阻抗性能优于商用四乙基四氟硼酸铵(Et4NBF4)/PC 电解液, 在电流密度为1000 mA·g-1的条件下, 工作电压为2.7 V, 其比电容为108 F·g-1.
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| 关 键 词： | 有机硅 离子液体 超级电容器 电解液 活性炭 |
| 收稿时间： | 2012-07-02 |
| 修稿时间： | 2012-07-18 |
Novel Organosilicon Ionic Liquid Based Electrolytes for Supercapacitors |
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| ZHONG Hao-Xiang ZHAO Chun-Bao LUO Hao,ZHANG Ling-Zhi. Novel Organosilicon Ionic Liquid Based Electrolytes for Supercapacitors[J]. Acta Physico-Chimica Sinica, 2012, 28(11): 2641-2647. DOI: 10.3866/PKU.WHXB201207181 |
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| Authors: | ZHONG Hao-Xiang ZHAO Chun-Bao LUO Hao ZHANG Ling-Zhi |
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| Affiliation: | Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China |
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| Abstract: | A novel room temperature organosilicon ionic liquid (SiN1IL) was synthesized and its chemical structure and electrochemical window were characterized. The ionic conductivity of SiN1IL/propylene carbonate (PC)/acetonitrile (AN) solution was 19.6 mS·cm-1, comparable with the commercial electrolytes currently used in supercapacitors. The electrochemical performance of the cells using activated carbon as electrodes and SiN1IL-based formula with PC/AN as electrolytes was systematically evaluated. SiN1IL/PC electrolyte exhibited superior rate capability and lower impedance compared to a conventional electrolyte (tetraethylammonium tetrafluoroborate (Et4NBF4)/PC). Upon applying a working voltage of 2.7 V, the SiN1IL/PC cell had a specific capacitance of 108 F·g-1 at a current density of 1000 mA·g-1. |
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| Keywords: | Organosilicon Ionic liquid Supercapacitor Electrolyte Activated carbon |
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