リチウム二次電池用溶媒としてのモノフルオロプロピオン酸エチルの利用
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概要
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We have used 2-fluoroethyl propionate (2FEP), ethyl 2-fluoropropionate (E2FP), and ethyl 3-fluoropropionate (E3FP) as organic solvents for lithium secondary batteries. We describe the effect of position isomerism on the physical and electrochemical properties of monofluorinated ethyl propionates (EPs). The relative permittivities of E2FP and E3FP were higher than that of 2FEP, whereas the viscosity of E2FP was lower than those of 2FEP and E3FP. The ionic conductivities of 1 mol dm−3 LiPF6 solutions in E2FP and E3FP were higher than those in 2FEP and EP above room temperature. The use of 2FEP or E2FP as a co-solvent greatly improved discharge capacities of Li | LiCoO2 coin cells.
著者
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TAKEHARA Masahiro
Mitsubishi Chemical Group Science and Technology Research Center, Inc.
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Suzuki Yuta
Department Of Bioengineering And Robotics Graduate School Of Engineering Tohoku University
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Ue Makoto
Mitsubishi Chemical Corporation Tsukuba Research Center
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Sasaki Yukio
Department Of Applied Chemistry Faculty Of Engineering Tokyo Institute Of Polytechnics
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MUTSUGA Hitomi
Department of Life Science and Sustainable Chemistry (Former name: Department of Nanochemistry), Faculty of Engineering, Tokyo Polytechnic University
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NAMBU Noritoshi
Department of Life Science and Sustainable Chemistry (Former name
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OHTSUKI Kiyoshi
Department of Life Science and Sustainable Chemistry (Former name
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OHTSUKI Kiyoshi
Department of Life Science and Sustainable Chemistry (Former name: Department of Nanochemistry), Faculty of Engineering, Tokyo Polytechnic University
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TAKEHARA Masahiro
Mitsubishi Chemical Group Science and Technology Research Center
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