|
|||||
|
|
Physical and electrochemical characterization of CuO-doped activated carbon in ionic liquid |
|
| Authors: | Guohua Sun Kaixi Li Chenggong Sun Hongwei He |
| Affiliation: | a Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, PR China b Graduate School, Chinese Academy of Sciences, Beijing 100039, PR China c School of Chemical, Environmental and Mining Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, UK |
| Abstract: | A series of CuO-doped activated carbons (CDACs) were prepared by chemical deposition. The electrochemical behavior of CDACs was investigated in electrochemical capacitors based on ionic liquid 1-ethyl-3-methylimidazolium thiocyanate (EMIm]SCN) as electrolyte. The results indicated that a diffusion-controlling, reversible redox reaction of CuO particles happened in ionic liquid and porous carbon. When the amount of CuO-doped activated carbon with a specific surface area of 2460 m2 g−1 reached 2%, the single electrode average specific capacitance can reach the maximal value of 210 F g−1, about 20% higher than the one used pure activated carbon as electrode material. |
| Keywords: | CuO-doped activated carbon Ionic liquid Redox reaction Average specific capacitance |
| 本文献已被 ScienceDirect 等数据库收录！ | |