Jump to main content
Jump to site search


Room Temperature Ionic Liquids versus organic solvents as lithium-oxygen battery electrolytes

Abstract

Imidazolium, pyrrolidinium and piperidinium room temperature ionic liquids (RTILs) are characterized to evaluate their thermal stability, ionic conductivity, viscosity, potential window and lithium solvation, which are key parameters for lithium-oxygen (Li-O2) battery electrolytes. The electrochemical tests of these RTILs are also carried out in Li-O2 cells and show reasonable values of specific capacity, up to 1659 mAh per gram of carbon in case of 1-propyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (PMI TFSI) with 0.2 molar fraction of LiTFSI. RTILs are compared with conventional organic electrolytes like ethylene carbonate (EC)/diethyl carbonate (DEC) solution or the tetraethylene glycol dimethyl ether (TEGDME), which enables to provide a further insight into ways of improving the electrolyte properties for Li-O2 battery. In particular, a viscosity lower than 100 cP combined with a lithium coordination number lower than 1.5 tends to enhance the battery performance.

Back to tab navigation

Publication details

The article was received on 25 Jan 2018, accepted on 11 Feb 2018 and first published on 12 Feb 2018


Article type: Paper
DOI: 10.1039/C8NJ00449H
Citation: New J. Chem., 2018, Accepted Manuscript
  •   Request permissions

    Room Temperature Ionic Liquids versus organic solvents as lithium-oxygen battery electrolytes

    E. Knipping, C. Aucher, G. Guirado and L. Aubouy, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00449H

Search articles by author

Spotlight

Advertisements