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

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

研究成果: ジャーナルへの寄稿記事

8 引用 (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.

元の言語英語
ページ(範囲)269-272
ページ数4
ジャーナルFuel Cells
9
発行部数3
DOI
出版物ステータス出版済み - 6 1 2009

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Thermodynamic stability
Electrolytes
Salts
Carbonates
Ionic conductivity
Ethylene
Lithium-ion batteries
Lithium
Decomposition
Metals

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology

これを引用

Effects of salts in methyl difluoroacefatebased electrolytes on their thermal stability in lithium-ion batteries. / Tanaka, T.; Doi, T.; Okada, Shigeto; Yamaki, J. I.

:: Fuel Cells, 巻 9, 番号 3, 01.06.2009, p. 269-272.

研究成果: ジャーナルへの寄稿記事

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abstract = "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.",
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AB - 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.

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