Preparation and properties of sulfonated poly(ether ether ketone)s (SPEEK)/polypyrrole composite membranes for direct methanol fuel cells

Xianfeng Li, Changpeng Liu, Dan Xu, Chengji Zhao, Zhe Wang, Gang Zhang, Hui Na, Wei Xing

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Polypyrrole (Ppy) was successfully introduced into methyl substituted sulfonated poly(ether ether ketone) (SPEEK) membranes by polymerization in SPEEK solutions to improve their methanol resistance. Uniform polypyrrole (Ppy) distributed composite membranes were formed by this method by the interaction between SPEEK and Ppy. The properties of the composite membranes were characterized in detail. The composite membranes show very good proton conductive capability (25 °C: 0.05-0.06 s cm-1) and good methanol resistance (25 °C: 5.3 × 10-7-1.1 × 10-6 cm2 s-1).The methanol diffusion coefficients of composite membranes are much lower than that of pure SPEEK membranes (1.5 × 10-6 cm2 s-1). The composite membranes show very good potential usage in direct methanol fuel cells (DMFCs).

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalJournal of Power Sources
Volume162
Issue number1
DOIs
StatePublished - Nov 8 2006

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

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