Electrochemical degradation of butyltrimethylammonium bis(trifluoromethylsulfonyl)imide for lithium battery applications

Christopher L Klug, Nicholas J. Bridges, Ann E. Visser, Stephen L. Crump, Eliel Villa-Aleman

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Ionic liquids (ILs) are being considered as electrolytes for lithium ion batteries due to their low volatility, high thermal stability, and wide electrochemical windows which are stable at the strongly reducing potentials present in Li/Li+ batteries. Lithium metal deposition occurs under strongly reducing conditions and the effect that Li metal and any overpotential has on the stability of ILs is important in furthering the application of ILs in lithium based batteries. Here, N-butyl-N-trimethylammonium bis(trifluoromethylsulfonyl)imide was exposed to various potential differences in order to collect and characterize the volatile products. The IL produced more volatile products when exposed to strong reducing potentials which included reactive products such as hydrogen, alkanes, and amines. Water is a known contributor to hydrogen production in reducing environments, but the IL is also a source of hydrogen. If Li+ was present, the preferred pathway of reduction was plating of the lithium onto the working electrode, thus decreasing the reaction rate of degraded ILs.

Original languageEnglish (US)
Pages (from-to)3879-3884
Number of pages6
JournalNew Journal of Chemistry
Volume38
Issue number8
DOIs
StatePublished - Jan 1 2014

Fingerprint

Imides
Ionic Liquids
Lithium batteries
Ionic liquids
Degradation
Lithium
Hydrogen
Metals
Alkanes
Hydrogen production
Plating
Paraffins
Electrolytes
Reaction rates
Amines
Thermodynamic stability
Electrodes
Water

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

Cite this

Electrochemical degradation of butyltrimethylammonium bis(trifluoromethylsulfonyl)imide for lithium battery applications. / Klug, Christopher L; Bridges, Nicholas J.; Visser, Ann E.; Crump, Stephen L.; Villa-Aleman, Eliel.

In: New Journal of Chemistry, Vol. 38, No. 8, 01.01.2014, p. 3879-3884.

Research output: Contribution to journalArticle

Klug, Christopher L ; Bridges, Nicholas J. ; Visser, Ann E. ; Crump, Stephen L. ; Villa-Aleman, Eliel. / Electrochemical degradation of butyltrimethylammonium bis(trifluoromethylsulfonyl)imide for lithium battery applications. In: New Journal of Chemistry. 2014 ; Vol. 38, No. 8. pp. 3879-3884.
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