物理化学学报 >> 2013, Vol. 29 >> Issue (09): 1998-2004.doi: 10.3866/PKU.WHXB201307031

电化学和新能源 上一篇    下一篇

活性炭基软包装超级电容器用有机电解液

黄博, 孙现众, 张熊, 张大成, 马衍伟   

  1. 中国科学院电工研究所应用超导重点实验室, 北京 100190
  • 收稿日期:2013-04-08 修回日期:2013-07-03 发布日期:2013-08-28
  • 通讯作者: 马衍伟 E-mail:ywma@mail.iee.ac.cn
  • 基金资助:

    中国科学院知识创新工程重要方向项目(KJCX2-YW-W26);北京市科技计划项目(Z111100056011007);国家自然科学基金(21001103,51025726)资助

Organic Electrolytes for Activated Carbon-Based Supercapacitors with Flexible Package

HUANG Bo, SUN Xian-Zhong, ZHANG Xiong, ZHANG Da-Cheng, MA Yan-Wei   

  1. Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
  • Received:2013-04-08 Revised:2013-07-03 Published:2013-08-28
  • Contact: MA Yan-Wei E-mail:ywma@mail.iee.ac.cn
  • Supported by:

    The project was supported by the Knowledge Innovation Programof the Chinese Academy of Sciences (KJCX2-YW-W26), Science and Technology Project of Beijing, China (Z111100056011007), and National Natural Science Foundation of China (21001103, 51025726).

摘要:

使用了一种新型的有机电解液(三乙基甲基四氟硼酸铵/(丙烯碳酸酯+乙腈): MeEt3NBF4/(AN+PC))和两种传统有机电解液(四乙基四氟硼酸铵/丙烯碳酸酯(Et4NBF4/AN)和四乙基四氟硼酸/乙腈(Et4NBF4/PC)), 制作成活性炭(AC)基软包装超级电容器. 在不同电压窗口下对新型有机电解液的循环伏安和电化学阻抗谱进行了表征, 并在0-3 V的电压窗口下, 通过循环伏安、电化学阻抗谱、恒流充放电、漏电流、自放电、循环寿命和库仑效率, 对以上三种电解液进行了综合的比较. 结果表明, 新型有机电解液综合了AN和PC各自的优点, 性能优异.

关键词: 超级电容器, 有机电解液, 活性炭

Abstract:

We fabricated activated carbon (AC)-based supercapacitors encased in flexible packaging using a novel organic electrolyte, triethylmethylammonium tetrafluoroborate/acetonitrile+propylene carbonate (MeEt3NBF4/(AN+PC)), and two conventional organic electrolytes, tetraethylammonium tetrafluoroborate/acetonitrile (Et4NBF4/AN) and tetraethylammonium tetrafluoroborate/propylene carbonate (Et4NBF4/PC). Cyclic voltammetry and electrochemical impedance spectroscopy measurements in various voltage windows were conducted. In addition, a comprehensive comparison of these three electrolytes was conducted via data obtained from cyclic voltammetry, electrochemical impedance spectroscopy, galvanostatic charge-discharge, leakage current, self-discharge, cyclic life, and coulombic efficiency within the 0-3 V voltage window. The results indicate that MeEt3NBF4/(AN+PC) combining the advantages of AN and PC exhibits excellent performance.

Key words: Supercapacitor, Organic electrolyte, Activated carbon

MSC2000: 

  • O646