Synthesis and substituent effect of polyether electrolyte membranes containing sulfofluorenyl groups

Yohei Chikashige, Kenji Miyatake, Masahiro Watanabe

研究成果: Paper査読

抄録

A new series of poly(arylene ether) ionomers containing sulfofluorenyl groups (SPE1-4) has been synthesized for the applications to polymer electrolyte fuel cells (PEFCs). The SPE-1 membrane shows high stability to heat, oxidation and hydrolysis, high mechanical stability, high proton conductivity and low gas permeation. In order to improve the proton conductivity at low relative humidity (RH), methyl groups substituted polyether ionomers SPE2-4 with higher IEC have been developed. The parent polyethers were synthesized by polycondensation and regioselectively substituted with sulfonic acid groups to give the title ionomers with the ion exchange capacity up to 3.26 meq/g. The SPE-4 (IEC = 3.26 meq/g) showed higher proton conductivity than that of Nafion at 80°C and 20 - 100% RH. The proton conductivity was durable over 10000 h at 100°C and 80% RH. These properties of the new ionomers seem promising as an electrolyte membrane for high temperature PEFCs.

本文言語English
ページ4589-4590
ページ数2
出版ステータスPublished - 2006
外部発表はい
イベント55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
継続期間: 2006 9 202006 9 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/2006/9/22

ASJC Scopus subject areas

  • Engineering(all)

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