Novel sulfonated poly(arylene ether sulfone) containing hydroxyl groups for enhanced proton exchange membrane properties

Yeonhye Kwon, So Young Lee, Sukjae Hong, Jong Hyun Jang, Dirk Henkensmeier, Sung Jong Yoo, Hyoung Juhn Kim, Sung Hyun Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We here report a new sulfonated poly(arylene ether sulfone) modified with hydroxyl side groups for a proton exchange membrane fuel cell (PEMFC). The polymer was synthesized via 4-step reaction including direct copolymerization, sulfochlorination, demethylation, and hydrolysis. By adding the hydroxyl group into the polymer backbone, strong intermolecular hydrogen bonds could be generated between polymer chains. The hydroxyl sulfonated polymer demonstrated high proton conductivities at a variety of temperatures and relative humidities due to its enhanced phase-separated morphology. Moreover, it showed an improved fuel cell performance compared to the non-hydroxylated analog with the same sulfonation degree. The introduction of hydroxyl groups to the sulfonated poly(arylene ether sulfone) provides a potential candidate for an improved PEMFC membrane.

Original languageEnglish
Pages (from-to)233-239
Number of pages7
JournalPolymer Chemistry
Volume6
Issue number2
DOIs
Publication statusPublished - 2015 Jan 1

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Sulfones
Hydroxyl Radical
Ether
Protons
Ethers
Ion exchange
Polymers
Membranes
Proton exchange membrane fuel cells (PEMFC)
Cell Membrane
Sulfonation
Proton conductivity
Cell membranes
Humidity
Copolymerization
Fuel cells
Hydrogen
Hydrolysis
Atmospheric humidity
Hydrogen bonds

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Biochemistry
  • Biomedical Engineering
  • Bioengineering

Cite this

Novel sulfonated poly(arylene ether sulfone) containing hydroxyl groups for enhanced proton exchange membrane properties. / Kwon, Yeonhye; Lee, So Young; Hong, Sukjae; Jang, Jong Hyun; Henkensmeier, Dirk; Yoo, Sung Jong; Kim, Hyoung Juhn; Kim, Sung Hyun.

In: Polymer Chemistry, Vol. 6, No. 2, 01.01.2015, p. 233-239.

Research output: Contribution to journalArticle

Kwon, Yeonhye ; Lee, So Young ; Hong, Sukjae ; Jang, Jong Hyun ; Henkensmeier, Dirk ; Yoo, Sung Jong ; Kim, Hyoung Juhn ; Kim, Sung Hyun. / Novel sulfonated poly(arylene ether sulfone) containing hydroxyl groups for enhanced proton exchange membrane properties. In: Polymer Chemistry. 2015 ; Vol. 6, No. 2. pp. 233-239.
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