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Enhancement of service life of polymer electrolyte fuel cells through application of nanodispersed ionomer

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Title
Enhancement of service life of polymer electrolyte fuel cells through application of nanodispersed ionomer
Author(s)
Chi-Yeong Ahn; Ahn J.; Kang S.Y.; Kim O.-H.; Lee D.W.; Lee J.H.; Shim J.G.; Lee C.H.; Cho Y.-H.; Yung-Eun Sung
Publication Date
2020-01
Journal
SCIENCE ADVANCES, v.6, no.5, pp.152760 -
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Abstract
Copyright © 2020 The Authors, some rights reserved.In polymer electrolyte fuel cells (PEFCs), protons from the anode are transferred to the cathode through the ionomer membrane. By impregnating the ionomer into the electrodes, proton pathways are extended and high proton transfer efficiency can be achieved. Because the impregnated ionomer mechanically binds the catalysts within the electrode, the ionomer is also called a binder. To yield good electrochemical performance, the binder should be homogeneously dispersed in the electrode and maintain stable interfaces with other catalyst components and the membrane. However, conventional binder materials do not have good dispersion properties. In this study, a facile approach based on using a supercritical fluid is introduced to prepare a homogeneous nanoscale dispersion of the binder material in aqueous alcohol. The prepared binder exhibited high dispersion characteristics, crystallinity, and proton conductivity. High performance and durability were confirmed when the binder material was applied to a PEFC cathode electrode
URI
https://pr.ibs.re.kr/handle/8788114/7264
ISSN
2375-2548
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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