A series of poly(butylimidazolium) ionic liquid functionalized copolymers for anion exchange membranes

Amina Ouadah; Hulin Xu; Tianwei Luo; Shuitao Gao; Xing Wang; Zhou Fang; Chaojun Jing; Changjin Zhu

doi:10.1016/j.jpowsour.2017.10.038

A series of poly(butylimidazolium) ionic liquid functionalized copolymers for anion exchange membranes

Amina Ouadah, Hulin Xu, Tianwei Luo, Shuitao Gao, Xing Wang, Zhou Fang, Chaojun Jing, Changjin Zhu^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

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

25 Citations (Scopus)

Abstract

A new series of ionic liquid functionalized copolymers for anion exchange membranes (AEM) is prepared. Poly(butylvinylimidazolium)(b-VIB) is copolymerized with para-methyl styrene (p-MS) by the radical polymerization formed block copolymers b-VIB/p-MS, which is crosslinked with poly(diphenylether bibenzimidazole) (DPEBI) providing the desired materials b-VIB/p-MS/DPEBI. Structures are characterized via H¹NMR, FTIR spectra and elemental analysis. The b-VIB blocks offer the anion conduction function while DPEBI moieties contribute to enhancing other properties. The prepared membranes display chloride conductivity as high as 19.5 mS/cm at 25 °C and 69.2 mS/cm at 100 °C-higher than that of the commercial membrane tokuyuama A201-. Their hydroxide conductivity reaches 35.7 Scm⁻¹ at 25 °C and 73.1 Scm⁻¹ at 100 °C. The membranes showed a linear Arrhenius behavior in the anion conduction, low activation energies and distinguished nanophase separation of hydrophilic/hydrophobic regions by the transmission electron microscopy (TEM) studies. Thermal investigations using TGA and DSC confirm that the membranes are stable up to 250 °C. Particularly, drastically alkaline stability due to no decrease in the hydroxide conductivity after 168 h of treatment with 2M KOH.

Original language	English
Pages (from-to)	77-85
Number of pages	9
Journal	Journal of Power Sources
Volume	371
DOIs	https://doi.org/10.1016/j.jpowsour.2017.10.038
Publication status	Published - 15 Dec 2017

Keywords

Anion conductivity
Anion exchange membrane
Fuel cell

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2017.10.038

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title = "A series of poly(butylimidazolium) ionic liquid functionalized copolymers for anion exchange membranes",

abstract = "A new series of ionic liquid functionalized copolymers for anion exchange membranes (AEM) is prepared. Poly(butylvinylimidazolium)(b-VIB) is copolymerized with para-methyl styrene (p-MS) by the radical polymerization formed block copolymers b-VIB/p-MS, which is crosslinked with poly(diphenylether bibenzimidazole) (DPEBI) providing the desired materials b-VIB/p-MS/DPEBI. Structures are characterized via H1NMR, FTIR spectra and elemental analysis. The b-VIB blocks offer the anion conduction function while DPEBI moieties contribute to enhancing other properties. The prepared membranes display chloride conductivity as high as 19.5 mS/cm at 25 °C and 69.2 mS/cm at 100 °C-higher than that of the commercial membrane tokuyuama A201-. Their hydroxide conductivity reaches 35.7 Scm−1 at 25 °C and 73.1 Scm−1 at 100 °C. The membranes showed a linear Arrhenius behavior in the anion conduction, low activation energies and distinguished nanophase separation of hydrophilic/hydrophobic regions by the transmission electron microscopy (TEM) studies. Thermal investigations using TGA and DSC confirm that the membranes are stable up to 250 °C. Particularly, drastically alkaline stability due to no decrease in the hydroxide conductivity after 168 h of treatment with 2M KOH.",

keywords = "Anion conductivity, Anion exchange membrane, Fuel cell",

author = "Amina Ouadah and Hulin Xu and Tianwei Luo and Shuitao Gao and Xing Wang and Zhou Fang and Chaojun Jing and Changjin Zhu",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

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doi = "10.1016/j.jpowsour.2017.10.038",

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T1 - A series of poly(butylimidazolium) ionic liquid functionalized copolymers for anion exchange membranes

AU - Ouadah, Amina

AU - Xu, Hulin

AU - Luo, Tianwei

AU - Gao, Shuitao

AU - Wang, Xing

AU - Fang, Zhou

AU - Jing, Chaojun

AU - Zhu, Changjin

PY - 2017/12/15

Y1 - 2017/12/15

N2 - A new series of ionic liquid functionalized copolymers for anion exchange membranes (AEM) is prepared. Poly(butylvinylimidazolium)(b-VIB) is copolymerized with para-methyl styrene (p-MS) by the radical polymerization formed block copolymers b-VIB/p-MS, which is crosslinked with poly(diphenylether bibenzimidazole) (DPEBI) providing the desired materials b-VIB/p-MS/DPEBI. Structures are characterized via H1NMR, FTIR spectra and elemental analysis. The b-VIB blocks offer the anion conduction function while DPEBI moieties contribute to enhancing other properties. The prepared membranes display chloride conductivity as high as 19.5 mS/cm at 25 °C and 69.2 mS/cm at 100 °C-higher than that of the commercial membrane tokuyuama A201-. Their hydroxide conductivity reaches 35.7 Scm−1 at 25 °C and 73.1 Scm−1 at 100 °C. The membranes showed a linear Arrhenius behavior in the anion conduction, low activation energies and distinguished nanophase separation of hydrophilic/hydrophobic regions by the transmission electron microscopy (TEM) studies. Thermal investigations using TGA and DSC confirm that the membranes are stable up to 250 °C. Particularly, drastically alkaline stability due to no decrease in the hydroxide conductivity after 168 h of treatment with 2M KOH.

AB - A new series of ionic liquid functionalized copolymers for anion exchange membranes (AEM) is prepared. Poly(butylvinylimidazolium)(b-VIB) is copolymerized with para-methyl styrene (p-MS) by the radical polymerization formed block copolymers b-VIB/p-MS, which is crosslinked with poly(diphenylether bibenzimidazole) (DPEBI) providing the desired materials b-VIB/p-MS/DPEBI. Structures are characterized via H1NMR, FTIR spectra and elemental analysis. The b-VIB blocks offer the anion conduction function while DPEBI moieties contribute to enhancing other properties. The prepared membranes display chloride conductivity as high as 19.5 mS/cm at 25 °C and 69.2 mS/cm at 100 °C-higher than that of the commercial membrane tokuyuama A201-. Their hydroxide conductivity reaches 35.7 Scm−1 at 25 °C and 73.1 Scm−1 at 100 °C. The membranes showed a linear Arrhenius behavior in the anion conduction, low activation energies and distinguished nanophase separation of hydrophilic/hydrophobic regions by the transmission electron microscopy (TEM) studies. Thermal investigations using TGA and DSC confirm that the membranes are stable up to 250 °C. Particularly, drastically alkaline stability due to no decrease in the hydroxide conductivity after 168 h of treatment with 2M KOH.

KW - Anion conductivity

KW - Anion exchange membrane

KW - Fuel cell

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U2 - 10.1016/j.jpowsour.2017.10.038

DO - 10.1016/j.jpowsour.2017.10.038

M3 - Article

AN - SCOPUS:85032867025

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VL - 371

SP - 77

EP - 85

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

A series of poly(butylimidazolium) ionic liquid functionalized copolymers for anion exchange membranes

Abstract

Keywords

UN SDGs

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