Effects of salts in methyl difluoroacefatebased electrolytes on their thermal stability in lithium-ion batteries

T. Tanaka, T. Doi, S. Okada, J. I. Yamaki

研究成果: Contribution to journalArticle査読

10 被引用数 (Scopus)

抄録

The effects of salts in methyl difluoroacetate (MFA)-based electrolytes on their ionic conductivity and their thermal stability were investigated. When LiPF6 was used as a salt, an MFA-based electrolyte showed a higher ionic conductivity than an ethylene carbonate (EC) and dimethyl carbonate (DMC)-based electrolyte from -30 to 25 °C. In DSC curves, while an MFA-based electrolyte containing LiPF6 gave only negligible exothermic heat up to 400 °C, a large exothermic peak due to the electrolyte decomposition was observed at about 270 °C for an EC + DMC-based electrolyte. The thermal stability of lithium metal and de-lithiated LiCoO2 coexisting with an electrolyte of 1 mol dm-3 LiPF6/MFA is also reported.

本文言語英語
ページ(範囲)269-272
ページ数4
ジャーナルFuel Cells
9
3
DOI
出版ステータス出版済み - 6 2009

All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術

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