Activated carbon-carbon nanotube nanocomposite coatings for supercapacitor applications
Activated carbon-carbon nanotube nanocomposite coatings for supercapacitor applications
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DOI：
10.1016/j.surfcoat.2013.05.027
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发表时间：
2013-10-01
影响因子：
5.4
通讯作者：
Lekakou, Constantina
中科院分区：
文献类型：
--
作者：
Lei, Chunhong;Lekakou, Constantina
基于以活性炭（AC）涂层为主体材料的电极，以大容量储能为目标，制备了电化学双层电容器电池。添加高度分散的多壁碳纳米管（MWNTs）以形成纳米复合涂层，用作针对非常低含量的MWNTs的高功率性能的电极。使用IM四氟硼酸四乙基铵-碳酸丙烯酯溶液作为有机电解质。所得电池的特征在于使用阻抗谱，循环伏安法，恒电流充放电测试。结果表明，在最佳配比下，涂层的功率密度和能量密度均有所提高，但随着碳纳米管含量的增加，涂层的功率密度增加，能量密度降低。(C)2013爱思唯尔有限公司版权所有。
Electrochemical double layer capacitor cells were fabricated based on electrodes with activated carbon (AC) coating as the host material, targeting large energy storage. Highly dispersed multiwall carbon nanotubes (MWNTs) were added to form nanocomposite coatings, used as electrodes targeting high-power performance for very low content of MWNTs. 1 M tetraethylammonium tetrafluoroborate-propylene carbonate solution was used as organic electrolyte. The resulting cells were characterized using impedance spectroscopy, cyclic voltammetry, and galvanostatic charge-discharge tests. It was concluded that at optimum composition of AC-MWNT coatings both power and energy densities are raised whereas further increase of the MWNT content would increase the power density but decrease the energy density. (C) 2013 Elsevier B.V. All rights reserved.