Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI

Yuan Chung Lin; Chung Wen Kuo; Ping Lin Kuo; Lin Hao; Lan Yu Tseng; Tzi Yi Wu

doi:10.1016/j.jtice.2015.02.017

Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI

Yuan Chung Lin, Chung Wen Kuo, Ping Lin Kuo, Lin Hao, Lan Yu Tseng, Tzi Yi Wu

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We conducted a study on the transport properties of an ionic liquid 4-(2-methoxyethyl)-4-methylmorpholin-4-ium bis(trifluoromethylsulfonyl)amide ([MorMEOM][TFSI]) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI)-doped [MorMEOM][TFSI] at various temperature and atmospheric pressure states through conductivity, viscosity, and self-diffusion coefficient characterizations. Based on the Walden rule, the αvalues of neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] estimated from the slopes of Walden plots were compared to those calculated from E_a_,_Λ/E_a_,_η. The diffusion coefficients of ¹H, ¹⁹F and ⁷Li were determined using the PGSE-NMR method to carry out a study of the dynamics of the cations, anions, and ion pairs. All of the neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] gave approximately straight lines for change in the D with Tη^-1, demonstrating that the Stokes-Einstein equation holds for the ionic diffusivity in the ILs.

Original language	English
Pages (from-to)	22-31
Number of pages	10
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	53
DOIs	https://doi.org/10.1016/j.jtice.2015.02.017
Publication status	Published - 2015 Aug 1

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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Lin, Y. C., Kuo, C. W., Kuo, P. L., Hao, L., Tseng, L. Y., & Wu, T. Y. (2015). Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI. Journal of the Taiwan Institute of Chemical Engineers, 53, 22-31. https://doi.org/10.1016/j.jtice.2015.02.017

Lin, Yuan Chung ; Kuo, Chung Wen ; Kuo, Ping Lin ; Hao, Lin ; Tseng, Lan Yu ; Wu, Tzi Yi. / Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI. In: Journal of the Taiwan Institute of Chemical Engineers. 2015 ; Vol. 53. pp. 22-31.

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title = "Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI",

abstract = "We conducted a study on the transport properties of an ionic liquid 4-(2-methoxyethyl)-4-methylmorpholin-4-ium bis(trifluoromethylsulfonyl)amide ([MorMEOM][TFSI]) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI)-doped [MorMEOM][TFSI] at various temperature and atmospheric pressure states through conductivity, viscosity, and self-diffusion coefficient characterizations. Based on the Walden rule, the αvalues of neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] estimated from the slopes of Walden plots were compared to those calculated from Ea,Λ/Ea,η. The diffusion coefficients of 1H, 19F and 7Li were determined using the PGSE-NMR method to carry out a study of the dynamics of the cations, anions, and ion pairs. All of the neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] gave approximately straight lines for change in the D with Tη-1, demonstrating that the Stokes-Einstein equation holds for the ionic diffusivity in the ILs.",

author = "Lin, {Yuan Chung} and Kuo, {Chung Wen} and Kuo, {Ping Lin} and Lin Hao and Tseng, {Lan Yu} and Wu, {Tzi Yi}",

year = "2015",

month = aug,

day = "1",

doi = "10.1016/j.jtice.2015.02.017",

language = "English",

volume = "53",

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journal = "Journal of the Taiwan Institute of Chemical Engineers",

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Lin, YC, Kuo, CW, Kuo, PL, Hao, L, Tseng, LY & Wu, TY 2015, 'Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI', Journal of the Taiwan Institute of Chemical Engineers, vol. 53, pp. 22-31. https://doi.org/10.1016/j.jtice.2015.02.017

Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI. / Lin, Yuan Chung; Kuo, Chung Wen; Kuo, Ping Lin; Hao, Lin; Tseng, Lan Yu; Wu, Tzi Yi.

In: Journal of the Taiwan Institute of Chemical Engineers, Vol. 53, 01.08.2015, p. 22-31.

Research output: Contribution to journal › Article › peer-review

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T1 - Impact of lithium salt addition on ionic transporting properties in a binary ionic liquid electrolyte composed of 4-(2-methoxyethyl)-4-methylmorpholinium bis(trifluoromethanesulfonyl)imide and LiTFSI

AU - Lin, Yuan Chung

AU - Kuo, Chung Wen

AU - Kuo, Ping Lin

AU - Hao, Lin

AU - Tseng, Lan Yu

AU - Wu, Tzi Yi

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N2 - We conducted a study on the transport properties of an ionic liquid 4-(2-methoxyethyl)-4-methylmorpholin-4-ium bis(trifluoromethylsulfonyl)amide ([MorMEOM][TFSI]) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI)-doped [MorMEOM][TFSI] at various temperature and atmospheric pressure states through conductivity, viscosity, and self-diffusion coefficient characterizations. Based on the Walden rule, the αvalues of neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] estimated from the slopes of Walden plots were compared to those calculated from Ea,Λ/Ea,η. The diffusion coefficients of 1H, 19F and 7Li were determined using the PGSE-NMR method to carry out a study of the dynamics of the cations, anions, and ion pairs. All of the neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] gave approximately straight lines for change in the D with Tη-1, demonstrating that the Stokes-Einstein equation holds for the ionic diffusivity in the ILs.

AB - We conducted a study on the transport properties of an ionic liquid 4-(2-methoxyethyl)-4-methylmorpholin-4-ium bis(trifluoromethylsulfonyl)amide ([MorMEOM][TFSI]) and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI)-doped [MorMEOM][TFSI] at various temperature and atmospheric pressure states through conductivity, viscosity, and self-diffusion coefficient characterizations. Based on the Walden rule, the αvalues of neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] estimated from the slopes of Walden plots were compared to those calculated from Ea,Λ/Ea,η. The diffusion coefficients of 1H, 19F and 7Li were determined using the PGSE-NMR method to carry out a study of the dynamics of the cations, anions, and ion pairs. All of the neat [MorMEOM][TFSI] and LiTFSI-doped [MorMEOM][TFSI] gave approximately straight lines for change in the D with Tη-1, demonstrating that the Stokes-Einstein equation holds for the ionic diffusivity in the ILs.

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