Ion transport behavior in polymerized imidazolium ionic liquids incorporating flexible pendant groups

Jin Hong Lee; Je Seung Lee; Jang Woo Lee; Soon Man Hong; Chong Min Koo

doi:10.1016/j.eurpolymj.2013.01.026

Ion transport behavior in polymerized imidazolium ionic liquids incorporating flexible pendant groups

Jin Hong Lee, Je Seung Lee, Jang Woo Lee, Soon Man Hong, Chong Min Koo

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

22 Scopus citations

Abstract

A series of polyvinylimidazolium cations containing an ethyl, mono, or triethylene oxide pendant groups with [TFSI]^- anion as counterion were synthesized via radical polymerization. The physical properties and ion conduction behaviors of the polymerized ionic liquids (PILs) were investigated to elucidate the effects of ethylene oxide unit. As the length of the ethylene oxide pendant group in the PILs increased, the glass transition temperature of PIL decreased and the ionic conductivity increased, implying that the introduction of ethylene oxide pendant group on the imidazolium cation improved the chain mobility of the resulting polymer macromolecules. When an equimolar amount of LiTFSI to the ionic groups in the PIL was added, the ionic conductivities were further enhanced up to 3 × 10^-5 S cm ^-1 at room temperature.

Original language	English
Pages (from-to)	1017-1022
Number of pages	6
Journal	European Polymer Journal
Volume	49
Issue number	5
DOIs	https://doi.org/10.1016/j.eurpolymj.2013.01.026
State	Published - May 2013
Externally published	Yes

Keywords

Ionic conductivity
Polycation
Polymer electrolyte
Polymerized ionic liquid

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10.1016/j.eurpolymj.2013.01.026

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title = "Ion transport behavior in polymerized imidazolium ionic liquids incorporating flexible pendant groups",

abstract = "A series of polyvinylimidazolium cations containing an ethyl, mono, or triethylene oxide pendant groups with [TFSI]- anion as counterion were synthesized via radical polymerization. The physical properties and ion conduction behaviors of the polymerized ionic liquids (PILs) were investigated to elucidate the effects of ethylene oxide unit. As the length of the ethylene oxide pendant group in the PILs increased, the glass transition temperature of PIL decreased and the ionic conductivity increased, implying that the introduction of ethylene oxide pendant group on the imidazolium cation improved the chain mobility of the resulting polymer macromolecules. When an equimolar amount of LiTFSI to the ionic groups in the PIL was added, the ionic conductivities were further enhanced up to 3 × 10-5 S cm -1 at room temperature.",

keywords = "Ionic conductivity, Polycation, Polymer electrolyte, Polymerized ionic liquid",

author = "Lee, \{Jin Hong\} and Lee, \{Je Seung\} and Lee, \{Jang Woo\} and Hong, \{Soon Man\} and Koo, \{Chong Min\}",

year = "2013",

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doi = "10.1016/j.eurpolymj.2013.01.026",

language = "English",

volume = "49",

pages = "1017--1022",

journal = "European Polymer Journal",

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publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Ion transport behavior in polymerized imidazolium ionic liquids incorporating flexible pendant groups

AU - Lee, Jin Hong

AU - Lee, Je Seung

AU - Lee, Jang Woo

AU - Hong, Soon Man

AU - Koo, Chong Min

PY - 2013/5

Y1 - 2013/5

N2 - A series of polyvinylimidazolium cations containing an ethyl, mono, or triethylene oxide pendant groups with [TFSI]- anion as counterion were synthesized via radical polymerization. The physical properties and ion conduction behaviors of the polymerized ionic liquids (PILs) were investigated to elucidate the effects of ethylene oxide unit. As the length of the ethylene oxide pendant group in the PILs increased, the glass transition temperature of PIL decreased and the ionic conductivity increased, implying that the introduction of ethylene oxide pendant group on the imidazolium cation improved the chain mobility of the resulting polymer macromolecules. When an equimolar amount of LiTFSI to the ionic groups in the PIL was added, the ionic conductivities were further enhanced up to 3 × 10-5 S cm -1 at room temperature.

AB - A series of polyvinylimidazolium cations containing an ethyl, mono, or triethylene oxide pendant groups with [TFSI]- anion as counterion were synthesized via radical polymerization. The physical properties and ion conduction behaviors of the polymerized ionic liquids (PILs) were investigated to elucidate the effects of ethylene oxide unit. As the length of the ethylene oxide pendant group in the PILs increased, the glass transition temperature of PIL decreased and the ionic conductivity increased, implying that the introduction of ethylene oxide pendant group on the imidazolium cation improved the chain mobility of the resulting polymer macromolecules. When an equimolar amount of LiTFSI to the ionic groups in the PIL was added, the ionic conductivities were further enhanced up to 3 × 10-5 S cm -1 at room temperature.

KW - Ionic conductivity

KW - Polycation

KW - Polymer electrolyte

KW - Polymerized ionic liquid

UR - https://www.scopus.com/pages/publications/84875459787

U2 - 10.1016/j.eurpolymj.2013.01.026

DO - 10.1016/j.eurpolymj.2013.01.026

M3 - Article

AN - SCOPUS:84875459787

SN - 0014-3057

VL - 49

SP - 1017

EP - 1022

JO - European Polymer Journal

JF - European Polymer Journal

IS - 5

ER -

Ion transport behavior in polymerized imidazolium ionic liquids incorporating flexible pendant groups

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Keywords

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