The advanced carbide-derived carbon based supercapacitor

被引:188
作者
Arulepp, M.
Leis, J.
Latt, M.
Miller, F.
Rumma, K.
Lust, E.
Burke, A. F.
机构
[1] Tartu Technol Ltd, EE-51014 Tartu, Estonia
[2] Univ Tartu, EE-51014 Tartu, Estonia
[3] Estonian Maritime Acad, EE-13912 Tallinn, Estonia
[4] Univ Calif Davis, Davis, CA 95616 USA
关键词
carbide-derived carbon; nonaqueous electrolyte; electrical double-layer capacitor; Ragone plot;
D O I
10.1016/j.jpowsour.2006.08.014
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The electrical double-layer (EDL) performance of three different TiC-derived nanoporous carbon materials was tested in prismatic capacitor assembly filled with 1.2 M triethylmethylammonium tetrafluoroborate (TEMA) acetonitrile solution. The electrical double-layer characteristics of supercapacitors were studied using the cyclic voltammetry (CV) and the electrochemical impedance spectroscopy (EIS) methods. Energy density versus power density, i.e. Ragone plots were constructed from the constant resistance and constant power (CP) charge/discharge data. The 1450F supercapacitor with novel nanoporous carbon made by halogen treatment of eTiC/TiO2 composite demonstrated the energy density of more than 10 Wh dm(-3) at the cell voltage of 2.7 V. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:1460 / 1466
页数:7
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