Thermal studies of methyl difluoroacetate as a novel candidate for electrolyte solvent of lithium-ion cells

Jun Ichi Yamaki, Masayuki Ihara, Shigeto Okada

Research output: Contribution to conferencePaper

Abstract

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.

Original languageEnglish
Pages41-56
Number of pages16
Publication statusPublished - Dec 1 2003
EventNew Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium - Paris, France
Duration: Apr 30 2003May 2 2003

Other

OtherNew Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium
CountryFrance
CityParis
Period4/30/035/2/03

Fingerprint

Anodes
Lithium
Electrolytes
Carbon
Ions
Thermodynamic stability
Calorimeters
Reaction products
Hot Temperature
Scanning
Metals
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Yamaki, J. I., Ihara, M., & Okada, S. (2003). Thermal studies of methyl difluoroacetate as a novel candidate for electrolyte solvent of lithium-ion cells. 41-56. Paper presented at New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium, Paris, France.

Thermal studies of methyl difluoroacetate as a novel candidate for electrolyte solvent of lithium-ion cells. / Yamaki, Jun Ichi; Ihara, Masayuki; Okada, Shigeto.

2003. 41-56 Paper presented at New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium, Paris, France.

Research output: Contribution to conferencePaper

Yamaki, JI, Ihara, M & Okada, S 2003, 'Thermal studies of methyl difluoroacetate as a novel candidate for electrolyte solvent of lithium-ion cells', Paper presented at New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium, Paris, France, 4/30/03 - 5/2/03 pp. 41-56.
Yamaki JI, Ihara M, Okada S. Thermal studies of methyl difluoroacetate as a novel candidate for electrolyte solvent of lithium-ion cells. 2003. Paper presented at New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium, Paris, France.
Yamaki, Jun Ichi ; Ihara, Masayuki ; Okada, Shigeto. / Thermal studies of methyl difluoroacetate as a novel candidate for electrolyte solvent of lithium-ion cells. Paper presented at New Trends in Intercalation Compounds for Energy Storage and Conversion - Proceedings of the International Symposium, Paris, France.16 p.
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