Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (09): 1998-2004.doi: 10.3866/PKU.WHXB201307031

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

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).

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