Physical and Electrochemical Properties of Trifluorinated Linear Ether as Solvent for Lithium Secondary Batteries

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  • SATOH Tomohiro
    Department of Life Science and Sustainable Chemistry (Former name: Department of Nanochemistry), Faculty of Engineering, Tokyo Polytechnic University
  • KURIHARA Keita
  • NAMBU Noritoshi
    Department of Life Science and Sustainable Chemistry (Former name: Department of Nanochemistry), Faculty of Engineering, Tokyo Polytechnic University
  • TAKEHARA Masahiro
    Mitsubishi Chemical Group Science and Technology Research Center, Inc.
  • UE Makoto
    Mitsubishi Chemical Group Science and Technology Research Center, Inc.
  • SASAKI Yukio
    Department of Life Science and Sustainable Chemistry (Former name: Department of Nanochemistry), Faculty of Engineering, Tokyo Polytechnic University

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抄録

A trifluoromethyl group (CF3-) is a strong electron-withdrawing substituent. We have synthesized 1-(2,2,2-trifluoroethoxy)-2-(2-methoxyethoxy)ethane (TFEMEE). The relative permittivity, viscosity, and anodic stability of TFEMEE were higher than those of 1-ethoxy-2-(2-methoxyethoxy)ethane (EMEE). The presence of the trifluomethyl group can weaken the attractive forces between molecules. The kinematic viscosity of TFEMEE was as low as that of EMEE especially at high temperatures. The use of TFEMEE as a co-solvent greatly improved cycling efficiency of a lithium anode.

収録刊行物

  • Electrochemistry

    Electrochemistry 80 (10), 768-770, 2012

    公益社団法人　電気化学会

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