Studies of activated carbons used in double-layer capacitors
Studies of activated carbons used in double-layer capacitors
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DOI：
10.1016/s0378-7753(98)00038-x
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发表时间：
1998-07-15
影响因子：
9.2
通讯作者：
Shi, H
中科院分区：
文献类型：
--
作者：
Qu, DY;Shi, H
采用氮气吸附、交流阻抗和恒流放电技术对各种活性炭材料进行了研究。详细讨论了活性炭材料的固有孔径分布与其作为超级电容器电极的电化学性能之间的关系。具有较大孔隙的活性炭被发现更适合高功率应用。通过交流阻抗数据拟合获得的各种尺寸孔隙的电化学可达时间成功地与材料的孔径分布相关联。 (C) 1998 Elsevier Science S.A. 保留所有权利。
Various kinds of activated carbon materials were investigated by means of nitrogen gas adsorption, AC impedance and constant current discharge techniques. The relation between the intrinsic pore size distribution of activated carbon materials and their electrochemical performance as electrodes of supercapacitor were discussed in detail. Activated carbons with larger pores are found to be more suitable for high power applications. The electrochemical accessible time to pores of various sizes obtained from the fitting of AC impedance data was successfully correlated with the pore size distribution of the materials. (C) 1998 Elsevier Science S.A. All rights reserved.