Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1287192 | Journal of Power Sources | 2006 | 6 Pages |
Abstract
A charge–discharge cycling test of a Li/LiCoO2 cell containing ionic liquids based on bis(fluorosulfonyl)imide ([FSI]−) as the electrolyte media, revealed significantly better rate properties compared to those of cells using conventional ionic liquids. The use of an 1-ethyl-3-methylimidazolium (EMI+) salt permitted the retention of 70% of the discharge capacity at a 4 C current rate. In contrast, similar performance of cells containing N-methyl-N-propylpyrrolidinium (Py13+) and N-methyl-N-propylpiperidinium (PP13+) salts of [FSI]− was limited to operation at 2 and 1 C current rates, respectively. However, the charge/discharge cycling stability of the cell with Py13[FSI] was much better than that of the cell using EMI[FSI].
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Authors
Hajime Matsumoto, Hikari Sakaebe, Kuniaki Tatsumi, Manabu Kikuta, Eriko Ishiko, Michiyuki Kono,