Citation: Hui YANG, Jia Hong ZHOU, Ya Wen TANG, Tian Hong LU, Masaki YOSHIO. Secondary Activation of Commercial Activated Carbon and its Application in Electric Double Layer Capacitor[J]. Chinese Chemical Letters, ;2002, 13(8): 787-790. shu

Secondary Activation of Commercial Activated Carbon and its Application in Electric Double Layer Capacitor

1.
College of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097;
2.
Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Saga 840-8502, Japan

Received Date: 7 November 2001

Fund Project: The authors arc grateful for the National Natural Science Foundation of China (20003005), the Natural Science Foundation of Jiangsu Province (BQ2000009).

The cheap commercial activated carbon (AC) was improved through the secondary activation under steam in the presence of FeCl₂ catalyst in the temperature range of 800-950℃ and its application in electric double layer capacitors (EDLCs) with organic electrolyte was studied. The re-activation of AC results in the increases in both specific capacitance and high rate capability of EDLCs. For AC treated under optimized conditions, its discharge specific capacitance increases up to 55.65 F/g, an increase of about 33% as compared to the original AC, and the high rate capability was increased significantly. The good performances of EDLC with improved AC were correlated to the increasing mesoporous ratio.
- Activated carbon,
- electric double layer capacitor,
- improvement,
- high rate capability
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