Proton-conducting membranes based on side-chain-type sulfonated poly(ether ketone/ether benzimidazole)s via one-pot condensation

Mengbing Cui; Zhenghui Zhang; Ting Yuan; Hui Yang; Liang Wu; Erigene Bakangura; Tongwen Xu

doi:10.1016/j.memsci.2014.04.019

Proton-conducting membranes based on side-chain-type sulfonated poly(ether ketone/ether benzimidazole)s via one-pot condensation

Mengbing Cui, Zhenghui Zhang, Ting Yuan, Hui Yang, Liang Wu, Erigene Bakangura, Tongwen Xu^*

^*Corresponding author for this work

USTC-CityU Joint Advanced Research Centre (Suzhou)

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

35 Citations (Scopus)

Abstract

A series of side-chain-type sullonated poly(ether ketone/ether benzimidazole)s containing side chain sullonate groups and main chain benzimidazole rings were successfully synthesized via benzimidazolization and acylation in a one pot method. By varying the amount of sulfonate monomers, the ratio of sullonate acid unit to benzimidazole base unit was easily controlled. ¹H NMR and IR spectra were used to characterize the polymer structure. The resulting membranes exhibited excellent mechanical properties (11-45 MPa tensile stress and 9-23% elongation at break) and good thermal stability. The proton conductivity of SPEKEBI-4 was 136 mS cm^-1 at 30ºC, much higher than Nafion® 115 membrane; while the methanol permeabilnies of all the membranes were lower than Nafion® 115 membrane. Moreover. the passive direct methanol fuel cells (DMECs) with SPEKEBI-2 membrane exhibited a maximum power density of 39.3 rnW cm^-2 at 25ºC, which show great potential for application in polymer electrolyte membrane fuel cells.

Original language	English
Pages (from-to)	100-106
Journal	Journal of Membrane Science
Volume	465
Online published	21 Apr 2014
DOIs	https://doi.org/10.1016/j.memsci.2014.04.019
Publication status	Published - 1 Sept 2014

Funding

We thank for financial supports from the National Basic Research Program (No. 2012CB932800), the National High Technology Research and Development Program 863 (2012AA03A608) and the National Natural Science Foundation of China (No. 51273185).

Research Keywords

Polyacylation
Proton exchange membranes
Sulfonated monomers
Direct methanol fuel cells
FUEL-CELLS
EXCHANGE MEMBRANES
POLYMER
POLYBENZIMIDAZOLES
POLYELECTROLYTES

UN SDGs

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

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10.1016/j.memsci.2014.04.019

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title = "Proton-conducting membranes based on side-chain-type sulfonated poly(ether ketone/ether benzimidazole)s via one-pot condensation",

abstract = "A series of side-chain-type sullonated poly(ether ketone/ether benzimidazole)s containing side chain sullonate groups and main chain benzimidazole rings were successfully synthesized via benzimidazolization and acylation in a one pot method. By varying the amount of sulfonate monomers, the ratio of sullonate acid unit to benzimidazole base unit was easily controlled. 1H NMR and IR spectra were used to characterize the polymer structure. The resulting membranes exhibited excellent mechanical properties (11-45 MPa tensile stress and 9-23% elongation at break) and good thermal stability. The proton conductivity of SPEKEBI-4 was 136 mS cm-1 at 30ºC, much higher than Nafion{\textregistered} 115 membrane; while the methanol permeabilnies of all the membranes were lower than Nafion{\textregistered} 115 membrane. Moreover. the passive direct methanol fuel cells (DMECs) with SPEKEBI-2 membrane exhibited a maximum power density of 39.3 rnW cm-2 at 25ºC, which show great potential for application in polymer electrolyte membrane fuel cells. ",

keywords = "Polyacylation, Proton exchange membranes, Sulfonated monomers, Direct methanol fuel cells, FUEL-CELLS, EXCHANGE MEMBRANES, POLYMER, POLYBENZIMIDAZOLES, POLYELECTROLYTES",

author = "Mengbing Cui and Zhenghui Zhang and Ting Yuan and Hui Yang and Liang Wu and Erigene Bakangura and Tongwen Xu",

year = "2014",

month = sep,

day = "1",

doi = "10.1016/j.memsci.2014.04.019",

language = "English",

volume = "465",

pages = "100--106",

journal = "Journal of Membrane Science",

issn = "0376-7388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Proton-conducting membranes based on side-chain-type sulfonated poly(ether ketone/ether benzimidazole)s via one-pot condensation

AU - Cui, Mengbing

AU - Zhang, Zhenghui

AU - Yuan, Ting

AU - Yang, Hui

AU - Wu, Liang

AU - Bakangura, Erigene

AU - Xu, Tongwen

PY - 2014/9/1

Y1 - 2014/9/1

N2 - A series of side-chain-type sullonated poly(ether ketone/ether benzimidazole)s containing side chain sullonate groups and main chain benzimidazole rings were successfully synthesized via benzimidazolization and acylation in a one pot method. By varying the amount of sulfonate monomers, the ratio of sullonate acid unit to benzimidazole base unit was easily controlled. 1H NMR and IR spectra were used to characterize the polymer structure. The resulting membranes exhibited excellent mechanical properties (11-45 MPa tensile stress and 9-23% elongation at break) and good thermal stability. The proton conductivity of SPEKEBI-4 was 136 mS cm-1 at 30ºC, much higher than Nafion® 115 membrane; while the methanol permeabilnies of all the membranes were lower than Nafion® 115 membrane. Moreover. the passive direct methanol fuel cells (DMECs) with SPEKEBI-2 membrane exhibited a maximum power density of 39.3 rnW cm-2 at 25ºC, which show great potential for application in polymer electrolyte membrane fuel cells.

AB - A series of side-chain-type sullonated poly(ether ketone/ether benzimidazole)s containing side chain sullonate groups and main chain benzimidazole rings were successfully synthesized via benzimidazolization and acylation in a one pot method. By varying the amount of sulfonate monomers, the ratio of sullonate acid unit to benzimidazole base unit was easily controlled. 1H NMR and IR spectra were used to characterize the polymer structure. The resulting membranes exhibited excellent mechanical properties (11-45 MPa tensile stress and 9-23% elongation at break) and good thermal stability. The proton conductivity of SPEKEBI-4 was 136 mS cm-1 at 30ºC, much higher than Nafion® 115 membrane; while the methanol permeabilnies of all the membranes were lower than Nafion® 115 membrane. Moreover. the passive direct methanol fuel cells (DMECs) with SPEKEBI-2 membrane exhibited a maximum power density of 39.3 rnW cm-2 at 25ºC, which show great potential for application in polymer electrolyte membrane fuel cells.

KW - Polyacylation

KW - Proton exchange membranes

KW - Sulfonated monomers

KW - Direct methanol fuel cells

KW - FUEL-CELLS

KW - EXCHANGE MEMBRANES

KW - POLYMER

KW - POLYBENZIMIDAZOLES

KW - POLYELECTROLYTES

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U2 - 10.1016/j.memsci.2014.04.019

DO - 10.1016/j.memsci.2014.04.019

M3 - RGC 21 - Publication in refereed journal

SN - 0376-7388

VL - 465

SP - 100

EP - 106

JO - Journal of Membrane Science

JF - Journal of Membrane Science

ER -

Proton-conducting membranes based on side-chain-type sulfonated poly(ether ketone/ether benzimidazole)s via one-pot condensation

Abstract

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Research Keywords

UN SDGs

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