Sulfonated polyarylenes using Lewis acid catalysts for PEMFC

Stephen M. Budy, Douglas A Loy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Polymer electrolytes, or more specifically, proton exchange membranes for fuel cell (PEMFC) applications have been a growing area of research and development worldwide in the last decade. DuPont's Nafion® perfluorinated membranes have played an integral role in the success of recent PEMFC technology. However, its high cost, poor performance at temperatures above 100 °C, and relatively high permeability to fuels and oxidizers material has driven researchers to look for alternative materials, including sulfonated polysulfones and polyether-ether-ketones (PEEK). We have looked at sulfonating polyarylenes prepared by Diels-Alder polymerizations as possible PEMFC candidates; high proton conductivity, chemical and thermal stability, and film toughness demonstrated that these materials are promising candidates. However, sulfonation reactions using sulfuric acid, sulfur trioxide, or chlorosulfonic acid can also cause cross-linking through the formation of sulfone links between polymer chains and lead to lower yields of usable ionomers. In this work we have adapted the Friedel-Crafts reactions that cause cross-linking to prepare sulfonated polymers by reacting polyarylenes with 1,3,5-benzenetrisulfonyl chloride.

Original languageEnglish (US)
Title of host publicationACS National Meeting Book of Abstracts
Publication statusPublished - 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: Aug 16 2009Aug 20 2009

Other

Other238th National Meeting and Exposition of the American Chemical Society, ACS 2009
CountryUnited States
CityWashington, DC
Period8/16/098/20/09

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Budy, S. M., & Loy, D. A. (2009). Sulfonated polyarylenes using Lewis acid catalysts for PEMFC. In ACS National Meeting Book of Abstracts