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

Authors
Choi, Da HyeLee, JongwonKwon, OhdeokKim, Ji-YoungKim, Keon
Issue Date
1-Apr-2008
Publisher
ELSEVIER SCIENCE BV
Keywords
high-temperature PEMFCs; PTFE layered membranes; poly(fluorinated arylene ether)s; poly(N-vinylimidazole)
Citation
JOURNAL OF POWER SOURCES, v.178, no.2, pp.677 - 682
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POWER SOURCES
Volume
178
Number
2
Start Page
677
End Page
682
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123753
DOI
10.1016/j.jpowsour.2007.08.054
ISSN
0378-7753
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 degrees C. The PTFE layered membrane can be an alternative approach for PEMFC applications at high temperature. (C) 2007 Elsevier B.V. All rights reserved.
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