Influence of Counteranion on the Properties of Polymerized Ionic Liquids/Ionic Liquids Proton-Exchange Membranes

Gongyue Huang; Luca Porcarelli; Yan Liang; Maria Forsyth; Haijin Zhu

doi:10.1021/acsaem.1c01571

Influence of Counteranion on the Properties of Polymerized Ionic Liquids/Ionic Liquids Proton-Exchange Membranes

Gongyue Huang, Luca Porcarelli, Yan Liang, Maria Forsyth^*, Haijin Zhu^*

^*Corresponding author for this work

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

Abstract

In this work, we developed a family of proton-exchange membranes based on the composites of polymerized ionic liquids and protic ionic liquids using 1-methyl-imidazolium as the cation. The influence of anion groups on physical properties was investigated. Among three composites with bis(trifluoromethanesulfonyl)imide (TFSI), triflate (OTf), and H2PO4 anions, the composite with TFSI anion presents the best ion conductivity. A synergistic effect has been observed for the composite with both TFSI and OTf mixed anion, which showed significantly enhanced ionic conductivity compared to the composites with either anion alone, reaching 1.47 mS/cm at 120 °C. This work highlights the combination of TFSI and OTf anion as a facile and efficient strategy for improving ionic conductivity and shows a promising prospect of polyILs/protic ILs composites as proton-conducting membrane materials.

Original language	English
Pages (from-to)	10593-10602
Number of pages	10
Journal	ACS Applied Energy Materials
Volume	4
Issue number	10
DOIs	https://doi.org/10.1021/acsaem.1c01571
State	Published - 25 Oct 2021
Externally published	Yes

Keywords

NMR
polymerized ionic liquids
protic ionic liquids
proton conduction
proton-exchange membranes

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10.1021/acsaem.1c01571

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title = "Influence of Counteranion on the Properties of Polymerized Ionic Liquids/Ionic Liquids Proton-Exchange Membranes",

abstract = "In this work, we developed a family of proton-exchange membranes based on the composites of polymerized ionic liquids and protic ionic liquids using 1-methyl-imidazolium as the cation. The influence of anion groups on physical properties was investigated. Among three composites with bis(trifluoromethanesulfonyl)imide (TFSI), triflate (OTf), and H2PO4 anions, the composite with TFSI anion presents the best ion conductivity. A synergistic effect has been observed for the composite with both TFSI and OTf mixed anion, which showed significantly enhanced ionic conductivity compared to the composites with either anion alone, reaching 1.47 mS/cm at 120 °C. This work highlights the combination of TFSI and OTf anion as a facile and efficient strategy for improving ionic conductivity and shows a promising prospect of polyILs/protic ILs composites as proton-conducting membrane materials.",

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author = "Gongyue Huang and Luca Porcarelli and Yan Liang and Maria Forsyth and Haijin Zhu",

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year = "2021",

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doi = "10.1021/acsaem.1c01571",

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T1 - Influence of Counteranion on the Properties of Polymerized Ionic Liquids/Ionic Liquids Proton-Exchange Membranes

AU - Huang, Gongyue

AU - Porcarelli, Luca

AU - Liang, Yan

AU - Forsyth, Maria

AU - Zhu, Haijin

N1 - Publisher Copyright: ©

PY - 2021/10/25

Y1 - 2021/10/25

N2 - In this work, we developed a family of proton-exchange membranes based on the composites of polymerized ionic liquids and protic ionic liquids using 1-methyl-imidazolium as the cation. The influence of anion groups on physical properties was investigated. Among three composites with bis(trifluoromethanesulfonyl)imide (TFSI), triflate (OTf), and H2PO4 anions, the composite with TFSI anion presents the best ion conductivity. A synergistic effect has been observed for the composite with both TFSI and OTf mixed anion, which showed significantly enhanced ionic conductivity compared to the composites with either anion alone, reaching 1.47 mS/cm at 120 °C. This work highlights the combination of TFSI and OTf anion as a facile and efficient strategy for improving ionic conductivity and shows a promising prospect of polyILs/protic ILs composites as proton-conducting membrane materials.

AB - In this work, we developed a family of proton-exchange membranes based on the composites of polymerized ionic liquids and protic ionic liquids using 1-methyl-imidazolium as the cation. The influence of anion groups on physical properties was investigated. Among three composites with bis(trifluoromethanesulfonyl)imide (TFSI), triflate (OTf), and H2PO4 anions, the composite with TFSI anion presents the best ion conductivity. A synergistic effect has been observed for the composite with both TFSI and OTf mixed anion, which showed significantly enhanced ionic conductivity compared to the composites with either anion alone, reaching 1.47 mS/cm at 120 °C. This work highlights the combination of TFSI and OTf anion as a facile and efficient strategy for improving ionic conductivity and shows a promising prospect of polyILs/protic ILs composites as proton-conducting membrane materials.

KW - NMR

KW - polymerized ionic liquids

KW - protic ionic liquids

KW - proton conduction

KW - proton-exchange membranes

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U2 - 10.1021/acsaem.1c01571

DO - 10.1021/acsaem.1c01571

M3 - 文章

AN - SCOPUS:85116716500

SN - 2574-0962

VL - 4

SP - 10593

EP - 10602

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 10

ER -

Influence of Counteranion on the Properties of Polymerized Ionic Liquids/Ionic Liquids Proton-Exchange Membranes

Abstract

Keywords

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