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Cited 5 time in webofscience Cited 6 time in scopus
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Hydrocarbon-based electrode ionomer for proton exchange membrane fuel cells

Authors
Chae, Ji EonYoo, Sung JongKim, Jin YoungJang, Jong HyunLee, So YoungSong, Kwang HoKim, Hyoung-Juhn
Issue Date
20-11월-2020
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Hydrocarbon-based electrode ionomer; Membrane-electrode assembly; Polymer electrolyte; Proton exchange membrane fuel cell; Sulfonated poly(arylene ether sulfone)
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.45, no.57, pp.32856 - 32864
Indexed
SCIE
SCOPUS
Journal Title
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume
45
Number
57
Start Page
32856
End Page
32864
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/51476
DOI
10.1016/j.ijhydene.2020.03.003
ISSN
0360-3199
Abstract
The electrode ionomer is a key factor that significantly affects the catalyst layer morphology and fuel cell performance. Herein, sulfonated poly(arylene ether sulfone)-based electrode ionomers with polymers of various molecular weights and alcohol/water mixtures were prepared, and those comprising the alcohol/water mixture showed a higher performance than the ones prepared using higher boiling solvents, such as dimethylacetamide; this is owing to the formation of the uniformly dispersed ionomer catalyst layer. The relation between ionomer molecular weight for the same polymer structure and the sulfonation degree was investigated. Because the chain length of polymer varies with molecular weight and chain entanglement degree, its molecular weight affects the electrode morphology. As the ionomer covered the catalyst, the agglomerates formed were of different morphologies according to their molecular weight, which could be deduced indirectly through dynamic light scattering and scanning electron microscopy. Addition- ally, the fuel cell performance was confirmed in the current-voltage curve. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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공과대학 (화공생명공학과)
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