Nonaqueous liquid electrolytes based on novel 1-ethyl-3-methylimidazolium bis (nonafluorobutane-1-sulfonyl imidate) ionic liquid for energy storage devices

K. Karuppasamy, Dhanasekaran Vikraman, In Tae Hwang, Hyun Jung Kim, A. Nichelson, Ranjith Bose, Hyun Seok Kim

    Research output: Contribution to journalArticlepeer-review

    21 Scopus citations

    Abstract

    A new bulky fluorinated anion based ionic liquid, 1-ethyl-3-methylimidazolium bis (nonafluorobutane-1-sulfonyl imidate) (Im1, 3BNFSI), was synthesized through ion exchange condensation process and employed for electrolyte preparation. Nonaqueous liquid electrolytes were prepared using synthesized ionic liquid: lithium bis (nonafluorobutane-1-sulfonyl imidate) salt, propylene carbonate, and dimethoxy ethane solvents by mechanical agitation; and considered for applications in lithium ion batteries. Maximum electrical conductivity 2.21»mS.cm-1 and wide electrochemical stability window (4.3»V) were achieved for the prepared electrolytes using different electrochemical techniques. The highest specific capacity (132.75»mA»h.g-1) was achieved for LiFePO4/ionic liquid electrolytes/Li coin cell, suggesting them as an auspicious candidate for high performance lithium ion batteries.

    Original languageBritish English
    Pages (from-to)1251-1260
    Number of pages10
    JournalJournal of Materials Research and Technology
    Volume9
    Issue number2
    DOIs
    StatePublished - Mar 2020

    Keywords

    • Chronoamperometry
    • Discharge capacity
    • Ionic liquids
    • Lithium ion battery

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