Fast cycling of Li/LiCoO2 cell with low-viscosity ionic liquids based on bis(fluorosulfonyl)imide [FSI]-

Hajime Matsumoto, Hikari Sakaebe, Kuniaki Tatsumi, Manabu Kikuta, Eriko Ishiko, Michiyuki Kono

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472 Citations (Scopus)

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].

Original languageEnglish
Pages (from-to)1308-1313
Number of pages6
JournalJournal of Power Sources
Volume160
Issue number2 SPEC. ISS.
DOIs
Publication statusPublished - Oct 6 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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