期刊
JOURNAL OF POWER SOURCES
卷 185, 期 2, 页码 1585-1588出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2008.08.086
关键词
Ionic liquid; Electric double layer capacitor; 1-Ethyl-3-methyl imidazolium; bis(fluorosulfonyl)imide
An ionic liquid, 1-ethyl-3-methyl imidazolium bis(fluorosulfonyl)imide (EMI-FSI), has been applied to an electrolyte for electric double layer capacitors (EDLCs). The electrolyte exhibited high ionic conductivity comparable to that of a conventional organic electrolyte. EDLC prepared with EMI-FSI showed excellent rate capability although the electrolyte is a neat ionic liquid; this performance was observed irrespective of the presence of a binder in an activated carbon-based electrode. The self-discharge was suppressed by using EMI-FSI. A cycling durability test showed that the cell with EMI-FSI kept over 90% of the initial capacitance even after 10,000 cycles. (C) 2008 Elsevier B.V. All rights reserved.
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