Preparation and properties of novel cross-linked sulfonated poly(arylene ether ketone) for direct methanol fuel cell application

Yang Zhang, Ying Wan, Gang Zhang, Ke Shao, Chengji Zhao, Hongtao Li, Hui Na

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

A series of cross-linkable sulfonated poly(arylene ether ketone)s bearing carboxylic acid groups (C-SPAEKs) have been prepared for direct methanol fuel cells (DMFCs). The chemical structure of the cross-linkable copolymers was analyzed by 1H NMR and 13C NMR spectra. Cross-linked membranes were obtained by thermal curing cross-linkable copolymers. The cross-linked network structure caused significant enhancement in the mechanical properties and large reduction in water uptake (WU), swelling ratio and methanol permeability of the membranes. The water uptake and methanol permeability of C-SPAEK-50 membrane was 506.9% (80 °C) and 14.83 × 10-7 cm2/s, but after cross-linking they reduced to 75.2% and 1.74 × 10-7 cm2/s, while maintaining proton conductivity of 0.197 S/cm, which was higher than 0.146 S/cm of Nafion 117.

Original languageEnglish (US)
Pages (from-to)353-359
Number of pages7
JournalJournal of Membrane Science
Volume348
Issue number1-2
DOIs
StatePublished - Feb 15 2010

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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