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Direct synthesis of sulfonated poly(ether ether ketone ketone)s (SPEEKKs) proton exchange membranes for fuel cell application

Authors
Journal
Polymer
0032-3861
Publisher
Elsevier
Publication Date
Volume
46
Issue
15
Identifiers
DOI: 10.1016/j.polymer.2005.04.067
Keywords
  • Speekk
  • Pem
  • Sulfonation

Abstract

Abstract A series of sulfonated poly(ether ether ketone ketone)s (SPEEKK)s based membranes have been prepared and evaluated for proton exchange membranes (PEM). The membranes show very good thermal and mechanical stabilities. The structures of membranes were studied with AFM. The membranes show very good proton conductive ability (25 °C: 0.007–0.04 s/cm) and methanol resistance (25 °C: 7.68×10 −8 to 5.75×10 −7 cm 2/s). The methanol diffusion coefficients of membranes are much lower than that of Nafion (2×10 −6 cm 2/s). The SPEEKKs membranes show very good respective in direct methanol fuel cells (DMFC) usages.

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