Supercapacitor based on graphene and ionic liquid electrolyte |
| |
Authors: | Chaopeng Fu Yafei Kuang Zhongyuan Huang Xiao Wang Yifan Yin Jinhua Chen Haihui Zhou |
| |
Affiliation: | 1. College of Chemistry and Chemical Engineering, Hunan University, Changsha, China, 410082 2. State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China, 410082
|
| |
Abstract: | A new kind of supercapacitor by using chemical reduced graphene (CRG) as electrode material and ionic liquid with addition of acetonitrile as electrolyte is assembled and investigated. CRG materials with high surface area are prepared by chemical reduction of graphene oxide. The capacitive properties of the supercapacitor composed of the CRG and ionic liquid electrolyte are studied by electrical impedance spectroscopy, cyclic voltammetry and galvanostatic charge–discharge. With the combined advantages of graphene and ionic liquid, the supercapacitor shows perfect performance. The supercapacitor possesses wide cell voltage and good stability. The specific capacitance, energy density, and specific power density of the present supercapacitor are 132?Fg??, 143.7?Wh?kg??, and 2.8?kW?kg??, respectively. The results demonstrate the potential application of electrical energy storage devices with high performance based on this new kind of supercapacitor. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|