Poly(vinyl benzyl methylpyrrolidinium) hydroxide derived anion exchange membranes for water electrolysis

Huanhuan Li, Mikkel Rykær Kraglund, Alexander Kappel Reumert, Xiaorui Ren, David Aili*, Jingshuai Yang

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Developing anion exchange membranes (AEMs) with a long lifespan is a considerable challenge for the electrolyte material in the alkaline water electrolysis. Herein, the methylpyrrolidinium cation functionalized poly(vinyl benzyl chloride) (PVBC-MPy) membrane with high alkaline stability and ion conductivity simultaneously was synthesized through a facile, gentle and non-carcinogenic chemical method. A poly(ether ketone-cardo) (PEK-cardo) polymer was blended with PVBC-MPy to provide sufficient mechanical robustness for integration and testing in AEM water electrolysis. The PVBC-MPy/x%PEK-cardo membranes showed excellent alkaline stability with no obvious degradation after immersing in 1 mol L−1 KOH at 60 °C and 80 °C for more than 500 h. The PVBC-MPy/35%PEK-cardo membrane exhibited a good balance between high ion conductivity and mechanical strength, and was down-selected for electrolysis testing in 1 M KOH at 60 °C. The cell polarization curves of the AEM water electrolysis indicated that the membrane displayed good cell performance with a current density of 500 mA cm−2 at 2 V at 60 °C. Moreover electrochemical impedance spectroscopy and the cell voltage lifetime test illustrated the feasibility of the membrane operating under mildly alkaline conditions.
Original languageEnglish
JournalJournal of Materials Chemistry A
Volume7
Issue number30
Pages (from-to)17914-17922
ISSN2050-7488
DOIs
Publication statusPublished - 2019

Cite this

@article{1e12a8b2ab834137a06e53f5f9e159d5,
title = "Poly(vinyl benzyl methylpyrrolidinium) hydroxide derived anion exchange membranes for water electrolysis",
abstract = "Developing anion exchange membranes (AEMs) with a long lifespan is a considerable challenge for the electrolyte material in the alkaline water electrolysis. Herein, the methylpyrrolidinium cation functionalized poly(vinyl benzyl chloride) (PVBC-MPy) membrane with high alkaline stability and ion conductivity simultaneously was synthesized through a facile, gentle and non-carcinogenic chemical method. A poly(ether ketone-cardo) (PEK-cardo) polymer was blended with PVBC-MPy to provide sufficient mechanical robustness for integration and testing in AEM water electrolysis. The PVBC-MPy/x{\%}PEK-cardo membranes showed excellent alkaline stability with no obvious degradation after immersing in 1 mol L−1 KOH at 60 °C and 80 °C for more than 500 h. The PVBC-MPy/35{\%}PEK-cardo membrane exhibited a good balance between high ion conductivity and mechanical strength, and was down-selected for electrolysis testing in 1 M KOH at 60 °C. The cell polarization curves of the AEM water electrolysis indicated that the membrane displayed good cell performance with a current density of 500 mA cm−2 at 2 V at 60 °C. Moreover electrochemical impedance spectroscopy and the cell voltage lifetime test illustrated the feasibility of the membrane operating under mildly alkaline conditions.",
author = "Huanhuan Li and Kraglund, {Mikkel Ryk{\ae}r} and Reumert, {Alexander Kappel} and Xiaorui Ren and David Aili and Jingshuai Yang",
year = "2019",
doi = "10.1039/c9ta04868e",
language = "English",
volume = "7",
pages = "17914--17922",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "RSC Publications",
number = "30",

}

Poly(vinyl benzyl methylpyrrolidinium) hydroxide derived anion exchange membranes for water electrolysis. / Li, Huanhuan ; Kraglund, Mikkel Rykær; Reumert, Alexander Kappel; Ren, Xiaorui; Aili, David; Yang, Jingshuai.

In: Journal of Materials Chemistry A, Vol. 7, No. 30, 2019, p. 17914-17922.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Poly(vinyl benzyl methylpyrrolidinium) hydroxide derived anion exchange membranes for water electrolysis

AU - Li, Huanhuan

AU - Kraglund, Mikkel Rykær

AU - Reumert, Alexander Kappel

AU - Ren, Xiaorui

AU - Aili, David

AU - Yang, Jingshuai

PY - 2019

Y1 - 2019

N2 - Developing anion exchange membranes (AEMs) with a long lifespan is a considerable challenge for the electrolyte material in the alkaline water electrolysis. Herein, the methylpyrrolidinium cation functionalized poly(vinyl benzyl chloride) (PVBC-MPy) membrane with high alkaline stability and ion conductivity simultaneously was synthesized through a facile, gentle and non-carcinogenic chemical method. A poly(ether ketone-cardo) (PEK-cardo) polymer was blended with PVBC-MPy to provide sufficient mechanical robustness for integration and testing in AEM water electrolysis. The PVBC-MPy/x%PEK-cardo membranes showed excellent alkaline stability with no obvious degradation after immersing in 1 mol L−1 KOH at 60 °C and 80 °C for more than 500 h. The PVBC-MPy/35%PEK-cardo membrane exhibited a good balance between high ion conductivity and mechanical strength, and was down-selected for electrolysis testing in 1 M KOH at 60 °C. The cell polarization curves of the AEM water electrolysis indicated that the membrane displayed good cell performance with a current density of 500 mA cm−2 at 2 V at 60 °C. Moreover electrochemical impedance spectroscopy and the cell voltage lifetime test illustrated the feasibility of the membrane operating under mildly alkaline conditions.

AB - Developing anion exchange membranes (AEMs) with a long lifespan is a considerable challenge for the electrolyte material in the alkaline water electrolysis. Herein, the methylpyrrolidinium cation functionalized poly(vinyl benzyl chloride) (PVBC-MPy) membrane with high alkaline stability and ion conductivity simultaneously was synthesized through a facile, gentle and non-carcinogenic chemical method. A poly(ether ketone-cardo) (PEK-cardo) polymer was blended with PVBC-MPy to provide sufficient mechanical robustness for integration and testing in AEM water electrolysis. The PVBC-MPy/x%PEK-cardo membranes showed excellent alkaline stability with no obvious degradation after immersing in 1 mol L−1 KOH at 60 °C and 80 °C for more than 500 h. The PVBC-MPy/35%PEK-cardo membrane exhibited a good balance between high ion conductivity and mechanical strength, and was down-selected for electrolysis testing in 1 M KOH at 60 °C. The cell polarization curves of the AEM water electrolysis indicated that the membrane displayed good cell performance with a current density of 500 mA cm−2 at 2 V at 60 °C. Moreover electrochemical impedance spectroscopy and the cell voltage lifetime test illustrated the feasibility of the membrane operating under mildly alkaline conditions.

U2 - 10.1039/c9ta04868e

DO - 10.1039/c9ta04868e

M3 - Journal article

VL - 7

SP - 17914

EP - 17922

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 30

ER -