Sulfonated Poly(ether sulfone)-Based Catalyst Binder for a Proton-Exchange Membrane Fuel Cell

Title
Sulfonated Poly(ether sulfone)-Based Catalyst Binder for a Proton-Exchange Membrane Fuel Cell
Authors
남비김형준장종현이상엽조은애오인환홍성안임태훈
Keywords
Sulfonated Polymer; PEMFC; electrochemistry; membranes; co-polymer binder; poly(ether sulfone)s; proton exchange membrane fuel cell
Issue Date
2009-08
Publisher
Journal of applied polymer science
Citation
VOL 113, 2499-2506
Abstract
ABSTRACT: Sulfonated poly(ether sulfone) copolymer (PES 60) and its partially fluorinated analogue (F-PES 60) were synthesized via the nucleophilic aromatic polycondensation of commercially available monomers to make a polymer electrolyte membrane and a binding material in the electrodes of a membrane–electrode assembly (MEA). PES 60 and F-PES 60 showed proton conductivities of 0.091 and 0.094 S/cm, respectively, in water at room temperature. The copolymer was dissolved in the mixture of alcohol and water to get a 1 wt % binder solution. A catalyst slurry was prepared with the copolymer solution and sprayed on the copolymer (PES 60 or F-PES 60) membrane to obtain a MEA. Both PES 60 and F-PES 60 basedMEAs were fabricated with different amounts of their binder in the electrodes to examine the effect of the copolymer binder in the catalyst layer on the fuel cell performance. The MEA with 2 wt % copolymer binder in the electrodes showed the best fuel cell performance. VVC 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 2499–2506, 2009
URI
http://pubs.kist.re.kr/handle/201004/35222
ISSN
0021-8995
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