期刊
JOURNAL OF POWER SOURCES
卷 195, 期 13, 页码 4406-4409出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2010.01.041
关键词
Electric double-layer capacitors; Micro-porous carbon; Meso-porous carbon; Aqueous electrolytes
The capacitive characteristics of micro- and meso-porous carbon materials have been compared in cyclic voltammetric studies and galvanostatic charge-discharge tests. Meso-porous carbon can keep certain high capacitance values at high scan rates, whereas micro-porous carbon possesses very high capacitance values at low scan rates but fades quickly as the scan rate rises up. For better performance of electric double-layer capacitors (EDLCs), the cooperative application of both kinds of carbon materials has been proposed in the following two ways: mixing both kinds of carbons in the same electrode or using the asymmetric configuration of carbon electrodes in the same EDLC. The cooperative effect on the electrochemical performance has also been addressed. (C) 2010 Elsevier B.V. All rights reserved.
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