Cross-linked polyelectrolyte for direct methanol fuel cells applications based on a novel sulfonated cross-linker

Mingyu Li, Gang Zhang, Shuai Xu, Chengji Zhao, Miaomiao Han, Liyuan Zhang, Hao Jiang, Zhongguo Liu, Hui Na

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

A novel type of cross-linked proton exchange membrane of lower methanol permeation and high proton conductivity is prepared, based on a newly synthesized sulfonated cross-linker: carboxyl terminated benzimidazole trimer bearing sulfonic acid groups (s-BI). Compared to membranes cross-linked with non-sulfonated cross-linker (BI), SPEEK/s-BI-n membranes show higher IEC values and proton conductivities. Meanwhile, oxidative stability and mechanical property of SPEEK/s-BI-n membranes are obviously improved. Among SPEEK/s-BI-n membranes, SPEEK/s-BI-2 exhibits high proton conductivity, low swelling ratio (0.122 S cm-1 and 15.2% at 60 C, respectively) and low methanol permeability coefficient. These results imply that the cross-linked membranes prepared with the newly sulfonated cross-linker are promising for the direct methanol fuel cells (DMFCs) application.

Original languageEnglish (US)
Pages (from-to)101-107
Number of pages7
JournalJournal of Power Sources
Volume255
DOIs
StatePublished - Jun 1 2014

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Direct methanol fuel cells (DMFC)
Polyelectrolytes
fuel cells
methyl alcohol
membranes
Membranes
Proton conductivity
protons
Methanol
Bearings (structural)
conductivity
low conductivity
Sulfonic Acids
sulfonic acid
Hydraulic conductivity
trimers
Permeation
swelling
Swelling
Protons

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Li, Mingyu ; Zhang, Gang ; Xu, Shuai ; Zhao, Chengji ; Han, Miaomiao ; Zhang, Liyuan ; Jiang, Hao ; Liu, Zhongguo ; Na, Hui. / Cross-linked polyelectrolyte for direct methanol fuel cells applications based on a novel sulfonated cross-linker. In: Journal of Power Sources. 2014 ; Vol. 255. pp. 101-107.
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Cross-linked polyelectrolyte for direct methanol fuel cells applications based on a novel sulfonated cross-linker. / Li, Mingyu; Zhang, Gang; Xu, Shuai; Zhao, Chengji; Han, Miaomiao; Zhang, Liyuan; Jiang, Hao; Liu, Zhongguo; Na, Hui.

In: Journal of Power Sources, Vol. 255, 01.06.2014, p. 101-107.

Research output: Contribution to journalArticle

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AU - Li, Mingyu

AU - Zhang, Gang

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AU - Zhao, Chengji

AU - Han, Miaomiao

AU - Zhang, Liyuan

AU - Jiang, Hao

AU - Liu, Zhongguo

AU - Na, Hui

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