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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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A composite electrolyte membrane containing high-content sulfonated carbon spheres for proton exchange membrane fuel cells

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Title
A composite electrolyte membrane containing high-content sulfonated carbon spheres for proton exchange membrane fuel cells
Other Titles
A composite electrolyte membrane containing high-content sulfonated carbon spheres for proton exchange membrane fuel cells
Author
Choi, YounggeunKim, YoungkwonKang, Kyung YeonLee, Jae Sung
Keywords
ACID; FORMALDEHYDE; DEGRADATION; RESORCINOL; NAFION; GELS
Issue Date
2011-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.49, no.4, pp.1367 - 1373
Abstract
Sulfonated carbon spheres (SCS) were employed with perfluorinated ionomers as a binder to make proton-conducting electrolyte membranes for polymer electrolyte membrane fuel cells (PEMFC). Hot-pressing produced a symmetric, thin membrane with SCS particles concentrated in the center of the membrane. Relative to Nation, the SCS materials showed higher density of sulfonic acid groups and increased water retention capacity of the membrane. This is the favorable condition for effective back diffusion of water from cathode preventing dehydration of membrane. As a result, the SCS membrane showed much better performance in single cell PEMFC operation than Nation membrane. The membrane also showed much improved tolerance to chemical degradation by oxygen radical species. (C) 2010 Elsevier Ltd. All rights reserved
URI
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DOI
10.1016/j.carbon.2010.11.056
ISSN
0008-6223
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ECHE_Journal Papers
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