| 离子液体型超级电容器软包高温老化性能评测研究 |
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| 引用本文： | 叶珍珍,陈鑫祺,汪剑,李博凡,崔超婕,张刚,钱陆明,金鹰,骞伟中.离子液体型超级电容器软包高温老化性能评测研究[J].化工学报,2021,72(12):6351-6360. |
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| 作者姓名： | 叶珍珍 陈鑫祺 汪剑 李博凡 崔超婕 张刚 钱陆明 金鹰 骞伟中 |
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| 作者单位： | 1.清华大学化学工程系，北京 100084;2.中天超容科技有限公司，江苏 南通 226463 |
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| 基金项目： | 中国博士后科学基金(2020M670342);国家自然科学基金项目(21975142) |
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| 摘 要： | 构筑了介孔炭，离子液体（EMIMBF4）与泡沫铝极片结构的超级电容器软包（容量为40 F），评测了其在2.7 V，65℃，1500 h老化实验中的性能。利用恒流充放电、恒流-恒压充放电模式评测，该电容器经过连续1500 h的高温处理后电容值衰减约10%，内阻增加比例低于40%。与传统的乙腈基电解液软包对比，虽然乙腈基软包起始内阻低，但产气多，且高温循环条件下容量衰减比例和内阻增加比例均劣于离子液体基电解液。上述对比说明，离子液体基电解液在泡沫铝三维导电导热结构的配合下，具有了良好的长周期循环性能。同时，由于其无毒性，可以用于封闭的楼宇空间或其他场所，提供本质安全性。
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| 关 键 词： | 离子液体 超级电容器 高温老化 长寿命评价 |
| 收稿时间： | 2021-08-17 |
Evaluation of aging performance under high temperature of ionic liquid-based pouch supercapacitor |
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| Zhenzhen YE,Xinqi CHEN,Jian WANG,Bofan LI,Chaojie CUI,Gang ZHANG,Luming QIAN,Ying JIN,Weizhong QIAN.Evaluation of aging performance under high temperature of ionic liquid-based pouch supercapacitor[J].Journal of Chemical Industry and Engineering(China),2021,72(12):6351-6360. |
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| Authors: | Zhenzhen YE Xinqi CHEN Jian WANG Bofan LI Chaojie CUI Gang ZHANG Luming QIAN Ying JIN Weizhong QIAN |
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| Affiliation: | 1.Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;2.Zhong Tian Supercapacitor Technology Co. , Ltd. , Nantong 226463, Jiangsu, China |
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| Abstract: | In this paper, a pouch supercapacitor with a structure of mesoporous carbon, ionic liquid (EMIMBF4) and aluminum foam (capacity 40 F) was constructed, and its performance in the 2.7 V, 65℃, 1500 h aging experiment was evaluated. The capacitance of the supercapacitor attenuates about 10% and the internal resistance increases less than 40% after the 1500 h aging. Its performance is compared with the conventional acetonitrile-based pouch. Although the latter exhibits low initial internal resistance, gases in large amounts are produced and the capacitance attenuation ratio and the internal resistance increase ratio are higher under the high temperature cycling condition, compared to the ionic liquid-based pouch. The above comparison shows that ionic liquid-based electrolyte exhibits excellent cycling performance under the assistance of three dimensional conductive and thermal conductivity structure of aluminum foam. In addition, the advantage of non-toxic, low volatile point of ionic liquids would provide the intrinsic safety as used in enclosed spaces, such as in the elevators of skyscrapers. |
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| Keywords: | ionic liquid supercapacitor high temperature aging cycling life evaluation |
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