Investigation of lithium tetrafluorooxalatophosphate [LiPF 4(C2O4)] as a lithium-ion battery electrolyte for elevated temperature performance
Document Type
Article
Date of Original Version
1-1-2010
Abstract
The thermal stability of lithium tetrafluorooxalatophosphate [LiPF 4(C2O4)] electrolyte was investigated. Although the thermal stabilities of the solid LiPF4(C2O 4) and LiPF6 were comparable, the thermal stability of the liquid LiPF4(C2 O4)/carbonate electrolyte was better than LiPF6/carbonate electrolytes. Lithium-ion cells containing LiPF4(C2 O4) electrolyte had better capacity retention than LiPF6 electrolyte containing cells upon cycling after storage at 65°C for 2 weeks. Ex situ analysis of the electrodes before and after storage at 65°C and cycling suggested that differences in the structures of the anode and cathode surface films contributed to the superior performance of cells containing LiPF4(C 2O4) electrolyte. © 2009 The Electrochemical Society.
Publication Title, e.g., Journal
Journal of the Electrochemical Society
Volume
157
Issue
1
Citation/Publisher Attribution
Xu, Mengqing, Ang Xiao, Weishan Li, and Brett L. Lucht. "Investigation of lithium tetrafluorooxalatophosphate [LiPF 4(C2O4)] as a lithium-ion battery electrolyte for elevated temperature performance." Journal of the Electrochemical Society 157, 1 (2010). doi: 10.1149/1.3258290.