Thermal Stability of Methyl Difluoroacetate as a Novel Electrolyte Solvent for Lithium Batteries Electrolytes

Jun Ichi Yamaki, Takaaki Tanaka, Masayuki Ihara, Kazuya Sato, Minato Egashira, Izumi Watanabe, Shigeto Okada

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

LiPF6/Methyl difluoroacetate (MFA) shows a very good thermal stability with Li metal. However, LiPF6/Ethyl difluoroacetate (EFA) did not show any improvement of the thermal stability. Using FTIR and XPS, the main component of SEI in the MFA electrolyte was found to be CHF 2COOLi. However, CHF2COOLi does not exist in the SEI of the EFA electrolyte, because CHF2COOLi dissolves in EFA electrolyte. CHF2COOLi was found to dissolve in EC, DMC, and DEC. Therefore, the addition of a small amount of MFA in 1 M LiPF6/EC + DMC, DMC, and DEC electrolytes was not effective to improve thermal stability.

Original languageEnglish
Pages (from-to)1154-1156
Number of pages3
JournalElectrochemistry
Volume71
Issue number12
DOIs
Publication statusPublished - Dec 2003

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Fingerprint Dive into the research topics of 'Thermal Stability of Methyl Difluoroacetate as a Novel Electrolyte Solvent for Lithium Batteries Electrolytes'. Together they form a unique fingerprint.

Cite this