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    Rights statement: This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 46, 75, 2021 DOI: 10.1016/j.ijhydene.2021.09.014

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Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis

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Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis. / Feng, Zhiming; Esteban, Pilar; Gupta, Gaurav; Fulton, David; Mamlouk, Mohamed.

In: International Journal of Hydrogen Energy, Vol. 46, No. 75, 29.10.2021, p. 37137-37151.

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Feng, Zhiming ; Esteban, Pilar ; Gupta, Gaurav ; Fulton, David ; Mamlouk, Mohamed. / Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis. In: International Journal of Hydrogen Energy. 2021 ; Vol. 46, No. 75. pp. 37137-37151.

Bibtex

@article{01ef90ca201b4db1b5cb1a1c109d5a73,
title = "Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis",
abstract = "Cross-linked quaternised Poly(2,6-dimethyl-1,4-Phenylene Oxide) (QPPO)-based membranes were prepared via Friedel-Crafts reactions using SnCl4 catalyst, 1,3,5-trioxane and chlorotrimethylsilane as environmentally-friendly chloromethylating reagents. New equations to calculate the degree of chloromethylation (DC) and cross-linking degree (CLD) were proposed. Ionic conductivity of 133 mS cm−1 at 80 °C was obtained, one of the highest reported for QPPO based membranes. We have compared QPPO to chloromethylated polystyrene-b-poly(ethylene/butylene)-b-polystyrene (SEBS) ionomer and report on the importance of ionomer-membrane interaction as well as the trade-off between swelling ratio and conductivity on performance and mechanical stability of AEM water electrolyser. Exsitu stability testing after 500 h in 1 M KOH showed membranes retained up to 94% of their original IEC. QPPO was employed as both membranes and ionomers in electrolyser tests. QPPO membranes exhibited area specific resistance of 104 mΩ cm−2 and electrolyser current density of 814 mA cm−2 at 2.0 V in 0.1 M NaOH solution at 40 °C.",
keywords = "PPO, Poly(2,6-dimethyl-1,4-phenylene oxide), AEM, Friedel-crafts reactions, Water electrolyser",
author = "Zhiming Feng and Pilar Esteban and Gaurav Gupta and David Fulton and Mohamed Mamlouk",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 46, 75, 2021 DOI: 10.1016/j.ijhydene.2021.09.014",
year = "2021",
month = oct,
day = "29",
doi = "10.1016/j.ijhydene.2021.09.014",
language = "English",
volume = "46",
pages = "37137--37151",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "75",

}

RIS

TY - JOUR

T1 - Highly conductive partially cross-linked poly(2,6-dimethyl-1,4-phenylene oxide) as anion exchange membrane and ionomer for water electrolysis

AU - Feng, Zhiming

AU - Esteban, Pilar

AU - Gupta, Gaurav

AU - Fulton, David

AU - Mamlouk, Mohamed

N1 - This is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, 46, 75, 2021 DOI: 10.1016/j.ijhydene.2021.09.014

PY - 2021/10/29

Y1 - 2021/10/29

N2 - Cross-linked quaternised Poly(2,6-dimethyl-1,4-Phenylene Oxide) (QPPO)-based membranes were prepared via Friedel-Crafts reactions using SnCl4 catalyst, 1,3,5-trioxane and chlorotrimethylsilane as environmentally-friendly chloromethylating reagents. New equations to calculate the degree of chloromethylation (DC) and cross-linking degree (CLD) were proposed. Ionic conductivity of 133 mS cm−1 at 80 °C was obtained, one of the highest reported for QPPO based membranes. We have compared QPPO to chloromethylated polystyrene-b-poly(ethylene/butylene)-b-polystyrene (SEBS) ionomer and report on the importance of ionomer-membrane interaction as well as the trade-off between swelling ratio and conductivity on performance and mechanical stability of AEM water electrolyser. Exsitu stability testing after 500 h in 1 M KOH showed membranes retained up to 94% of their original IEC. QPPO was employed as both membranes and ionomers in electrolyser tests. QPPO membranes exhibited area specific resistance of 104 mΩ cm−2 and electrolyser current density of 814 mA cm−2 at 2.0 V in 0.1 M NaOH solution at 40 °C.

AB - Cross-linked quaternised Poly(2,6-dimethyl-1,4-Phenylene Oxide) (QPPO)-based membranes were prepared via Friedel-Crafts reactions using SnCl4 catalyst, 1,3,5-trioxane and chlorotrimethylsilane as environmentally-friendly chloromethylating reagents. New equations to calculate the degree of chloromethylation (DC) and cross-linking degree (CLD) were proposed. Ionic conductivity of 133 mS cm−1 at 80 °C was obtained, one of the highest reported for QPPO based membranes. We have compared QPPO to chloromethylated polystyrene-b-poly(ethylene/butylene)-b-polystyrene (SEBS) ionomer and report on the importance of ionomer-membrane interaction as well as the trade-off between swelling ratio and conductivity on performance and mechanical stability of AEM water electrolyser. Exsitu stability testing after 500 h in 1 M KOH showed membranes retained up to 94% of their original IEC. QPPO was employed as both membranes and ionomers in electrolyser tests. QPPO membranes exhibited area specific resistance of 104 mΩ cm−2 and electrolyser current density of 814 mA cm−2 at 2.0 V in 0.1 M NaOH solution at 40 °C.

KW - PPO

KW - Poly(2,6-dimethyl-1,4-phenylene oxide)

KW - AEM

KW - Friedel-crafts reactions

KW - Water electrolyser

U2 - 10.1016/j.ijhydene.2021.09.014

DO - 10.1016/j.ijhydene.2021.09.014

M3 - Journal article

VL - 46

SP - 37137

EP - 37151

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 75

ER -