期刊
ELECTROCHIMICA ACTA
卷 50, 期 11, 页码 2233-2237出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2004.10.006
关键词
hybrid supercapacitor; ionic liquid; poly(3-methylthiophene); activated carbon; cycle-life
A long cycle-life, high-voltage supercapacitor featuring an activated carbon//poly(3-methylthiophene) hybrid configuration with N-butyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide ionic liquid, a solvent-free green electrolyte, was developed. The cyclability of a laboratory scale cell with electrode mass loading sized for practical uses was tested at 60 degrees C over 16,000 galvanostatic charge-discharge cycles at 10 mA cm(-2) in the 1.5 and 3.6 V voltage range. The reported average and maximum specific energy and power, specific capacitance and capacity, equivalent series resistance and coulombic efficiency over cycling demonstrate the long-term viability of this ionic liquid as green electrolyte for high-voltage hybrid supercapacitors. (c) 2004 Elsevier Ltd. All rights reserved.
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