Synthesis of Sulfonated Poly(Arylene Ether Sulfone)s Containing Aliphatic Moieties for Effective Membrane Electrode Assembly Fabrication by Low-Temperature Decal Transfer Methods

Authors
Choi, JieunKyeong, MinkyuKim, MinsungLee, Sang-SooSeo, BoraPark, Hyun SeoPark, Hee-YoungHenkensmeier, DirkLee, So YoungKim, Hyoung-Juhn
Issue Date
2021-06
Publisher
MDPI
Citation
POLYMERS, v.13, no.11
Abstract
The purpose of this study was to investigate the effect of the aliphatic moiety in the sulfonated poly(arylene ether sulfone) (SPAES) backbone. A new monomer (4,4'-dihydroxy-1,6-diphenoxyhexane) was synthesized and polymerized with other monomers to obtain partially alkylated SPAESs. According to differential scanning calorimetry analysis, the glass transition temperature (T-g) of these polymers ranged from 85 to 90 degrees C, which is 100 degrees C lower than that of the fully aromatic SPAES. Due to the low T-g values obtained for the partially alkylated SPAESs, it was possible to prepare a hydrocarbon electrolyte membrane-based membrane electrode assembly (MEA) with Nafion(R) binder in the electrode through the use of a decal transfer method, which is the most commercially suitable system to obtain an MEA of proton exchange membrane fuel cells (PEMFCs). A single cell prepared using this partially alkylated SPAES as an electrolyte membrane exhibited a peak power density of 539 mW cm(-2).
Keywords
GLASS-TRANSITION TEMPERATURE; ANION-EXCHANGE MEMBRANE; METHANOL FUEL-CELL; POLY(ETHER SULFONE)S; PROTON CONDUCTIVITY; MOLECULAR-WEIGHT; HIGH-PERFORMANCE; BINDER; MORPHOLOGY; STABILITY; decal transfer method; glass transition temperature (T-g); membrane electrode assembly (MEA); proton exchange membrane fuel cell (PEMFC); sulfonated poly(arylene ether sulfone)
ISSN
2073-4360
URI
https://pubs.kist.re.kr/handle/201004/116941
DOI
10.3390/polym13111713
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KIST Article > 2021
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