Carbon-ionic liquid double-layer capacitors

被引:248
作者
Lewandowski, A [1 ]
Galinski, M [1 ]
机构
[1] Poznan Univ Tech, Fac Chem Technol, PL-60965 Poznan, Poland
关键词
D O I
10.1016/j.jpcs.2003.09.009
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of electrochemical capacitors, based on activated carbon powders (ACP, specific surface area 870 and 2600 m(2)/g) and ionic liquids as electrolytes, were prepared and tested. The ionic liquids consisted of 1-ethyl-3-methyl imidazolium (EMIm(+)), 1-butyl-3-methyl imidazolium (BMIm(+)) and 1-methyl-1-propyl pyrrolidinium (BMPy+) cations, as well as of tetrafluoroborate, hexafluorophosphate and bis((trifluoromethyl)sulfonyl) imide anions. A typical capacitor consisted of two electrodes each with a mass of ca. 15-30 mg, and showed a capacity of ca. 0.35-1.5 F; this leads to a specific capacity of the carbon electrode material within the range of 45 (ACP 870 m(2)/g)-180 F/g (ACP 2600 m(2)/g). The specific capacity expressed versus total surface of carbon material was within the range of 5.2-6.9 muF/cm(2). The electrochemical stability window of ionic liquids determined at the glassy carbon electrode is within the range of ca. 3.0-4.2 V. The energy stored in a capacitor based on activated carbons and ionic liquids may be high, due to a broad practical electrochemical stability window of ca. 3 V. Ionic liquids are characterised by negligible vapour pressure; such a capacitor emits no volatile organic compounds and may be regarded as environmentally friendly. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:281 / 286
页数:6
相关论文
共 27 条
[1]   New trends in electrochemical supercapacitors [J].
Arbizzani, C ;
Mastragostino, M ;
Soavi, F .
JOURNAL OF POWER SOURCES, 2001, 100 (1-2) :164-170
[2]   Electrochemical supercapacitors based on industrial carbon blacks in aqueous H2SO4 [J].
Beck, F ;
Dolata, M ;
Grivei, E ;
Probst, N .
JOURNAL OF APPLIED ELECTROCHEMISTRY, 2001, 31 (08) :845-853
[3]   Possible improvements in making carbon electrodes for organic supercapacitors [J].
Bispo-Fonseca, I ;
Aggar, J ;
Sarrazin, C ;
Simon, P ;
Fauvarque, JF .
JOURNAL OF POWER SOURCES, 1999, 79 (02) :238-241
[4]   Electrode optimisation for carbon power supercapacitors [J].
Bonnefoi, L ;
Simon, P ;
Fauvarque, JF ;
Sarrazin, C ;
Dugast, A .
JOURNAL OF POWER SOURCES, 1999, 79 (01) :37-42
[5]   New gel electrolytes for batteries and supercapacitor applications [J].
Chojnacka, J ;
Acosta, JL ;
Morales, E .
JOURNAL OF POWER SOURCES, 2001, 97-8 :819-821
[6]  
Conway B. E., 1999, ELECTROCHEMICAL SUPE, DOI DOI 10.1007/978-1-4757-3058-6
[7]   Selective catalytic hydrodimerization of 1,3-butadiene by palladium compounds dissolved in ionic liquids [J].
Dullius, JEL ;
Suarez, PAZ ;
Einloft, S ;
de Souza, RF ;
Dupont, J ;
Fischer, J ;
De Cian, A .
ORGANOMETALLICS, 1998, 17 (05) :815-819
[8]   Ionic liquids. Green solvents for the future [J].
Earle, MJ ;
Seddon, KR .
PURE AND APPLIED CHEMISTRY, 2000, 72 (07) :1391-1398
[9]   Poly(vinylidene chloride)-based carbon as an electrode material for high power capacitors with an aqueous electrolyte [J].
Endo, M ;
Kim, YJ ;
Takeda, T ;
Maeda, T ;
Hayashi, T ;
Koshiba, K ;
Hara, H ;
Dresselhaus, MS .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (10) :A1135-A1140
[10]   Carbon materials for the electrochemical storage of energy in capacitors [J].
Frackowiak, E ;
Béguin, F .
CARBON, 2001, 39 (06) :937-950