Preparation of nitrated sulfonated poly(ether ether ketone) membranes for reducing methanol permeability in direct methanol fuel cell applications

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by nitration. All sulfonation and nitration were achieved with an inexpensive and simple post substitute reaction. The nitrated SPEEKs have a high glass transition temperature and thermal decomposition temperature, and a lower water uptake than SPEEK, which provides sufficient mechanical strength without swelling in the direct methanol fuel cell (DMFC) application. The methanol permeability of nitrated SPEEKS is reduced to 1.76 × 10-7 cm2 s-1 for S53N22 and 1.86 × 10-7 cm2 s-1 for S63N17 with no loss of conductivity in the DMFC application, and a proton conductivity that reached 0.026 S cm-1. The nitrated SPEEK membranes satisfy the requirements of proton-exchange membranes for the DMFC.

Original languageEnglish
Pages (from-to)341-347
Number of pages7
JournalJournal of Power Sources
Volume187
Issue number2
DOIs
Publication statusPublished - 2009 Feb 15

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

Fingerprint

Dive into the research topics of 'Preparation of nitrated sulfonated poly(ether ether ketone) membranes for reducing methanol permeability in direct methanol fuel cell applications'. Together they form a unique fingerprint.

Cite this