Constructing LiF-Dominated Interphases with Polymer Interwoven Outer Layer Enables Long-Term Cycling of Si Anodes
University of Science and Technology Beijing · Beijing Municipal Ecology and Environment Bureau · +3 more institutions
Abstract
Constructing a robust solid electrolyte interphase (SEI) is extremely critical to developing high-energy-density silicon (Si)-based lithium-ion batteries. However, it is still elusive how to accurately manipulate the chemical composition and structure of the SEI layer. Herein, a LiF-dominated SEI film intertwined by a highly elastic polymer is achieved by regulating the defluorination mechanism of the fluorinated carbonate additive on the Si electrode surface. The experimental and computational results confirm that the decomposition route of trans-difluoroethylene carbonate (DFEC) molecules can be significantly altered in the presence of lithium difluoro(oxalato)borate (LiDFOB) additive. The induction of…
Citation impact
- FWCI
- 21.46
- Percentile
- 100%
- References
- 55
Authors
6- YYYaozong Yang
University of Science and Technology Beijing
- JWJie Wang
Beijing Municipal Ecology and Environment Bureau, University of Science and Technology Beijing
- ZLZhaolin Li
Beijing Municipal Ecology and Environment Bureau, University of Science and Technology Beijing
- ZYZhao Yang
University of Science and Technology Beijing
- BWBo Wang
Qilu University of Technology, Energy Research Institute, Shandong Academy of Sciences, University of Science and Technology Beijing
Topics & keywords
- Electrolyte
- Materials science
- Chemical engineering
- Polymer
- Electrode
- Lithium (medication)
- Anode
- Ionic conductivity
- Affordable and clean energy