Energy Storage Science and Technology ›› 2016, Vol. 5 ›› Issue (4): 486-491.doi: 10.12028/j.issn.2095-4239.2015.04.011

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Preparation of activated graphene/activated carbon dry composite electrode and its application in supercapacitors

ZHENG Chao1, ZHOU Xufeng2, LIU Zhaoping2, YANG Bin1, JIAO Wangchun1, FU Guansheng1, RUAN Dianbo1   

  1. 1Ningbo CSR New Energy Technology Co., Ltd, Institute of Supercapacitors, Ningbo 315112, Zhejiang, China; 2Ningbo Institute of Industrial Technology, CAS, Ningbo 315201, Zhejiang, China
  • Received:2016-01-23 Revised:2016-03-03 Online:2016-07-01 Published:2016-07-01

Abstract:

Activated graphene/activated carbon composite electrodes were successfully prepared by the method of dry method of electrode preparation. The electrochemical performance of activated graphene/activated carbon electrodes was investigated using coin cell supercapacitor and soft package supercapacitor, respectively. Comprehensive results show that the activated graphene content of 10% (weight ratio) in composite is relatively reasonable. Compared to activated carbon electrode, the specific capacitance of 10% (weight ratio) activated graphene/activated carbon composite electrode increases by 10.8%. This work verified the applicability of activated graphene material in the commercial supercapacitor, and confirmed that the activated graphene is a kind of electrode material with high practical application value. But by now, the activated graphene has not really industrialization, its cost is much higher than that of commercial activated carbon. In the future, how to solve the engineering technical problem of activated carbon and reduce its cost are the urgent problems to be solved by the material industry.

Key words: activated graphene, activated carbon, dry method of electrode preparation, supercapacitors