Hybrid proton conducting membranes based on sulfonated cross-linked polysiloxane network for direct methanol fuel cell

Jing Zhu, Gang Zhang, Ke Shao, Chengji Zhao, Hongtao Li, Yang Zhang, Miaomiao Han, Haidan Lin, Mu Li, Hui Na

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

A series of novel hybrid membranes based on sulfonated poly(arylene ether ketone)s (SNPAEKs), polysiloxane (KH-560) and sulfonated curing agent (BDSA) has been prepared by sol-gel and cross-linking reaction for direct methanol fuel cells (DMFCs). All the hybrid membranes (SKB-xx) show high thermal properties and improved oxidative stability compared with the pristine SNPAEK membrane. The sulfonated cross-linked polysiloxanes networks in the hybrid membranes enhance the mechanical properties and reduce the swelling ratio. The swelling ratio of SKB-20 is 22%, which is much lower than that of the pristine SNPAEK (37%) at 80 °C. Meanwhile, SKB-xx membranes with greatly reduced methanol permeabilities show comparative proton conductivities to pristine SNPAEK membranes. Notably, the proton conductivities of SKB-5 and SKB-10 reach to 0.192 S cm-1 and 0.179 S cm-1 at 80 °C, respectively, which are even higher than the 0.175 S cm-1 of SNPAEK.

Original languageEnglish (US)
Pages (from-to)5803-5810
Number of pages8
JournalJournal of Power Sources
Volume196
Issue number14
DOIs
StatePublished - Jul 15 2011

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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    Zhu, J., Zhang, G., Shao, K., Zhao, C., Li, H., Zhang, Y., Han, M., Lin, H., Li, M., & Na, H. (2011). Hybrid proton conducting membranes based on sulfonated cross-linked polysiloxane network for direct methanol fuel cell. Journal of Power Sources, 196(14), 5803-5810. https://doi.org/10.1016/j.jpowsour.2011.03.021