The thermal stability of IM LiPF6/ CHF2COOCH 3 (methyl difluoroacetate, MFA) with lithiated carbon anodes and the electrochemical characteristics of carbon anodes in this electrolyte have been investigated in terms of the use of this electrolyte in lithium-ion batteries. Differential scanning calorimeter (DSC) measurement of LiPF6/ MFA with lithiated carbon anodes indicated that the main exothermic peak is around 400 °C. The peak temperature was 110 °C higher than the peak of LiPF6/ EC-DMC [1:1 in vol.] with lithiated carbon anodes. CHF2COOLi existed as a major component of SEI on the lithium metal anode in LiPF6/ MFA electrolyte. It was expected that a reaction product of CHF2COOLi and lithiated carbon increased the thermal stability. A good cycle performance was obtained for the lithium ion cell used in IM LiPF6/MFA.
|Number of pages||16|
|Publication status||Published - 2003|
|Event||New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium - Paris, France|
Duration: Apr 30 2003 → May 2 2003
|Other||New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium|
|Period||4/30/03 → 5/2/03|
All Science Journal Classification (ASJC) codes