Sulfonated poly(fluorinated arylene ether)s/poly(N-vinylimidazole) blend polymer and PTFE layered membrane for operating PEMFC at high temperature

Da Hye Choi, Jongwon Lee, Ohdeok Kwon, Ji Young Kim, Keon Kim

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We prepared a novel phosphoric acid-doped sulfonated poly(fluorinated arylene ether)s/poly(N-vinylimidazole) blend polymer and poly(tetrafluoroethylene) (PTFE) layered membrane. The thermal and electrochemical properties of the new layered membrane were investigated by thermogravimetric analysis (TGA), electrochemical impedance spectroscopy (EIS), as well as the performance of its membrane electrode assembly (MEA). The morphology of membrane was observed with field emission scanning electron microscopy (FE-SEM) and energy dispersive spectroscopy (EDS). The fabricated membrane shows good mechanical property comparable to PBI membrane. The conductivity of new layered membrane was similar to that of polybenzimidazole (PBI) at high temperature. The single cell test showed that new PTFE layered membrane had a good performance over 150 °C. The PTFE layered membrane can be an alternative approach for PEMFC applications at high temperature.

Original languageEnglish
Pages (from-to)677-682
Number of pages6
JournalJournal of Power Sources
Volume178
Issue number2
DOIs
Publication statusPublished - 2008 Apr 1

Fingerprint

polytetrafluoroethylene
polymer blends
Proton exchange membrane fuel cells (PEMFC)
Polymer blends
Polytetrafluoroethylenes
Ether
Ethers
ethers
membranes
Membranes
polybenzimidazole
Temperature
poly(4-vinylimidazole)
N-vinylimidazole
phosphoric acid
Phosphoric acid
Electrochemical impedance spectroscopy
Electrochemical properties
Field emission
spectroscopy

Keywords

  • High-temperature PEMFCs
  • Poly(fluorinated arylene ether)s
  • Poly(N-vinylimidazole)
  • PTFE layered membranes

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Sulfonated poly(fluorinated arylene ether)s/poly(N-vinylimidazole) blend polymer and PTFE layered membrane for operating PEMFC at high temperature. / Choi, Da Hye; Lee, Jongwon; Kwon, Ohdeok; Kim, Ji Young; Kim, Keon.

In: Journal of Power Sources, Vol. 178, No. 2, 01.04.2008, p. 677-682.

Research output: Contribution to journalArticle

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abstract = "We prepared a novel phosphoric acid-doped sulfonated poly(fluorinated arylene ether)s/poly(N-vinylimidazole) blend polymer and poly(tetrafluoroethylene) (PTFE) layered membrane. The thermal and electrochemical properties of the new layered membrane were investigated by thermogravimetric analysis (TGA), electrochemical impedance spectroscopy (EIS), as well as the performance of its membrane electrode assembly (MEA). The morphology of membrane was observed with field emission scanning electron microscopy (FE-SEM) and energy dispersive spectroscopy (EDS). The fabricated membrane shows good mechanical property comparable to PBI membrane. The conductivity of new layered membrane was similar to that of polybenzimidazole (PBI) at high temperature. The single cell test showed that new PTFE layered membrane had a good performance over 150 °C. The PTFE layered membrane can be an alternative approach for PEMFC applications at high temperature.",
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AU - Kim, Ji Young

AU - Kim, Keon

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