Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 168, Issue 7, Pages -Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1945-7111/ac11a6
Keywords
Batteries; Lithium; electrolyte; solid electrolyte interphase
Funding
- Vehicle Technology Office of the U.S. DOE [DE-SC0012704]
Ask authors/readers for more resources
Investigation on novel electrolyte formulations using isoxazole as a co-solvent in Li/graphite half cells shows significant improvement in low temperature performance. The addition of FEC enhances the stability of the anode SEI, preventing further decomposition of the isoxazole solvent and improving cycling performance.
An investigation of novel electrolyte formulations to improve low temperature performance of Li/graphite half cells has been conducted. A novel electrolyte co-solvent, isoxazole (IZ), has been investigated in electrolyte systems composed of lithium difluoro(oxalato)borate (LiDFOB) in fluoroethylene carbonate (FEC) and LiDFOB in ethylene carbonate (EC). Cells containing 1 M LiDFOB FEC: IZ electrolyte have a significant improvement in capacity retention and reversible capacity at -10 degrees C. Ex-situ surface analysis of the cycled electrodes suggests that reduction of LiDFOB results in an oxalate rich solid electrolyte interphase (SEI). Addition of FEC, results in improved stability of the anode SEI preventing further decomposition of isoxazole solvent and improving cycling performance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available