The physical properties and electrochemical performance of solvent-free polymer electrolytes, consisting of poly(ethylene oxide) [P(EO)] with Li+and N-butyl-W-methylpyrrolidinium (PYR14+) salts of bis(trifluoromethanesulfonyl)imide (TFSI), arc reported. The addition of the PYR14TFST room-temperature molten salt to the conventional P(EO)10LiTFST polymer electrolyte results in a significant enhancement of the ionic conductivity (to 2.6 × 10-4S/cm at 20°C). Li metal/LiFePO4batteries making use of this new family of solid polymer electrolytes have shown a very promising low-temperature cycle life. It was found that a Li metal/LiFePO4cell at 20°C can deliver 138 mAh/g during the first discharge, corresponding to 90% of the nominal specific capacity (154 mAh/g), and a promisingly low capacity fading of about 0.2%/cyele over 500 cycles. © 2006 The Electrochemical Society. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Materials Chemistry
Shin, J-H., Henderson, W. A., Tizzani, C., Passerini, S., Jeong, S-S., & Kim, K-W. (2006). Characterization of solvent-free polymer electrolytes consisting of ternary PEO-LiTFSI-PYR. Journal of the Electrochemical Society, 153(9), -. https://doi.org/10.1149/1.2211928