Abstract
New proton exchange membranes were prepared and evaluated as polymer electrolytes for a proton exchange membrane fuel cell (PEMFC). Two types of fluorinated poly(arylene ether)s (FPAEs) were synthesized by nucleophilic aromatic substitution of decafluorobiphenyl (DFBP) with 4,4′-(hexafluoroisopropylidene)diphenol (HFDP) and bisphenol-A (BPA). The FPAEs so prepared were converted into proton exchange polymers by sulfonation with fuming sulfuric acid (30% SO3). The FPAEs and sulfonated-fluorinated poly(arylene ether)s (S-FPAEs) with various sulfonation levels were characterized using 1H NMR, thermogravimetric analysis (TGA) and back titration, and then successfully evaluated as proton exchange membranes (PEM) with unit cell operation. power output measurements of S-DFBP-HFDP carried out at a cell temperature of 80°C. They exhibited a maximum power density of 425.5 mW/cm2 at 1150 mA/cm2.
| Original language | English |
|---|---|
| Pages (from-to) | 2315-2323 |
| Number of pages | 9 |
| Journal | Electrochimica Acta |
| Volume | 49 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2004 Jun 15 |
Bibliographical note
Funding Information:This study was supported by KOSEF through the Research Center for Energy Conversion and Storage, Korea science and Engineering Foundation (KOSEF R01-2001-00045-0), ‘Center for Nanostructured Materials Technology’ under the ‘21st Century Frontier R & D Programs’ of the Ministry of Science and Technology, Korea and the Korea Electric Power Corporation.
Keywords
- Fluorinated
- PEM
- PEMFC
- Poly(arylene ether)
- Sulfonation
ASJC Scopus subject areas
- General Chemical Engineering
- Electrochemistry
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