Electrochemical and Physicochemical Properties of PY[sub 14]FSI-Based Electrolytes with LiFSI
- 1 January 2009
- journal article
- research article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 156 (11), A891-A895
- https://doi.org/10.1149/1.3208048
Abstract
We report here the characterization of Li battery electrolytes based upon the NN -butyl- NN -methylpyrrolidinium bis(fluorosulfonyl)imide ionic liquid (PY14FSI)(PY14FSI) with lithium bis(fluorosulfonyl)imide (LiFSI) as a support salt. These electrolytes show low viscosity relative to other pyrrolidinium-based ionic liquids (ILs) and corresponding higher conductivity at subambient temperatures. The melting point of the IL decreases with the addition of LiFSI and concentrated samples remain totally amorphous. The electrolytes exhibit decreased thermal stability and increased parasitic cathodic reactions with increasing LiFSI fraction relative to the pure IL, probably due to a higher impurity level for the commercial LiFSI. Despite this, the electrolytes have excellent lithium cycling behavior at 20°C20°C .Keywords
This publication has 41 references indexed in Scilit:
- Discharge–charge properties of Li/LiCoO2 cell using room temperature ionic liquids (RTILs) based on quaternary ammonium cation – Effect of the structureJournal of Power Sources, 2005
- Preparation of room temperature ionic liquids based on aliphatic onium cations and asymmetric amide anions and their electrochemical properties as a lithium battery electrolyteJournal of Power Sources, 2005
- Alkylated imidazolium salt electrolyte for lithium cellsJournal of Power Sources, 2005
- Reversibility of Lithium Secondary Batteries Using a Room-Temperature Ionic Liquid Mixture and Lithium MetalElectrochemical and Solid-State Letters, 2005
- Room temperature molten salts as lithium battery electrolyteElectrochimica Acta, 2004
- High Lithium Metal Cycling Efficiency in a Room-Temperature Ionic LiquidElectrochemical and Solid-State Letters, 2004
- Ionic liquids to the rescue? Overcoming the ionic conductivity limitations of polymer electrolytesElectrochemistry Communications, 2003
- N-Methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide (PP13–TFSI) – novel electrolyte base for Li batteryElectrochemistry Communications, 2003
- Liquid and Polymer Gel Electrolytes for Lithium Batteries Composed of Room-Temperature Molten Salt Doped by Lithium SaltJournal of the Electrochemical Society, 2003
- Pyrrolidinium Imides: A New Family of Molten Salts and Conductive Plastic Crystal PhasesThe Journal of Physical Chemistry B, 1999