Mixtures of ionic liquids for low temperature electrolytes

Miriam Kunze, Sangsik Jeong, Giovanni B. Appetecchi, Monika Schönhoff, Martin Winter, Stefano Passerini

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Abstract

The conductivity, viscosity and the self-diffusion coefficient of pyrrolidinium-based ILs (ILs), N-butyl-N-methyl pyrrolidinium- bis(trifluoromethanesulfonyl)imide (Pyr14TFSI) and N-methyl-N-propyl pyrrolidinium-bis(fluorosulfonyl)imide (Pyr13FSI), and their binary mixtures were investigated in order to better understand their behavior as electrolyte components in supercapacitor and lithium battery systems. The IL mixtures showed excellent low temperature properties far exceeding those of the pure IL materials. For example, at -40°C the conductivity of binary mixtures was found to be up to four orders of magnitude higher than that of the pure ILs. © 2012 Elsevier Ltd.
Original languageEnglish
Pages (from-to)69 - 74
Number of pages6
JournalElectrochimica Acta
Volume82
DOIs
Publication statusPublished - 1 Nov 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Kunze, M., Jeong, S., Appetecchi, G. B., Schönhoff, M., Winter, M., & Passerini, S. (2012). Mixtures of ionic liquids for low temperature electrolytes. Electrochimica Acta, 82, 69 - 74. https://doi.org/10.1016/j.electacta.2012.02.035