Citation: Yong Xiao, Chao Long, Ming-Tao Zheng, Han-Wu Dong, Bing-Fu Lei, Hao-Ran Zhang, Ying-Liang Liu. High-capacity porous carbons prepared by KOH activation of activated carbon for supercapacitors[J]. Chinese Chemical Letters, ;2014, 25(6): 865-868. doi: 10.1016/j.cclet.2014.05.004 shu

High-capacity porous carbons prepared by KOH activation of activated carbon for supercapacitors

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Department of Applied Chemistry, South China Agricultural University, Guangzhou 510642, China

Corresponding author: Ying-Liang Liu,
Received Date: 26 February 2014
Available Online: 29 April 2014
Fund Project: This work was supported by the National Science Foundation of China (Nos. 21371061, 21031001) (Nos. 21371061, 21031001)the Key Academic Program of the 3rd phase "211 Project" of South China Agricultural University. (No. 2011A081301018)

High-performance supercapacitor electrode materials are prepared from the commercially available activated carbon (AC) through a facile and low-cost chemical activation method. The obtained results show that AC activated by KOH with an alkali/carbon ratio of 6/1 (ACK6) possesses a specific surface area of 3405 m²/g, a large pore volume of 2.01 cm³/g, and exhibits the highest initial specific capacitance of 335 F/g at the current density of 0.5 A/g in 6 mol/L KOH, and 85% coloumbic efficiency for 5000 cycles at 20 mV/s.
- Carbon materials,
- Amorphous materials,
- Electrical properties
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