Boosting the Low-Temperature Performance for Li-Ion Batteries in LiPF 6 -Based Local High-Concentration Electrolyte
Chinese Academy of Sciences · Institute of Coal Chemistry · +3 more institutions
Abstract
LiPF6-based commercial electrolytes are widely used in lithium-ion batteries (LIBs). However, due to the low ion conductivity that originated from the high freezing point of EC, sluggish desolvation process, and large interface resistance, LIBs with the currently commercial electrolyte based on LiPF6 demonstrate unsatisfactory performance in low-temperature operation. Herein, a LiPF6-based local high-concentration electrolyte with lithium difluorobis(oxalato)phosphate (LiDFBOP) additive is designed to enhance the performance of LIBs at low temperature. Higher-concentration LiPF6 in EC-free solvent improve the overall ionic conductivity of electrolyte. The Li+–solvent–PF6– structure can be obtained to reduce…
Citation impact
- FWCI
- 22.45
- Percentile
- 100%
- References
- 31
Authors
8- GSGe Song
Chinese Academy of Sciences, Institute of Coal Chemistry, University of Chinese Academy of Sciences
- ZYZonglin Yi
Chinese Academy of Sciences, Institute of Coal Chemistry, University of Chinese Academy of Sciences
- FSFangyuan SuCorresponding
Chinese Academy of Sciences, Institute of Coal Chemistry
- LXLijing Xie
Chinese Academy of Sciences, Institute of Coal Chemistry
- ZWZhenbing Wang
Chinese Academy of Sciences, Institute of Coal Chemistry
Topics & keywords
- Electrolyte
- Conductivity
- Lithium (medication)
- Ionic conductivity
- Solvent
- Materials science
- Graphite
- Ion
- Affordable and clean energy