Dually cross-linked polymer electrolyte membranes for direct methanol fuel cells

Title
Dually cross-linked polymer electrolyte membranes for direct methanol fuel cells
Authors
이영무
Keywords
Direct methanol fuel cell; Polymer electrolyte membrane; End-group crosslinking; Ionic crosslinking
Issue Date
2015-05
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v. 282, Page. 211-222
Abstract
End-group crosslinkable sulfonated poly(arylene ether sulfone) copolymer (ESPAES) and imidazolium poly(arylene ether sulfone) copolymer (IPAES) are synthesized as a proton exchange membrane and ionic crosslinker, respectively. A novel dually cross-linked membrane (DCM) based on ESPAES is similar to an inter-penetrating network and is prepared via blending IPAES and thermal treatment for direct methanol fuel cell (DMFC) applications. The synergistic effects of end-group crosslinking and ionic crosslinking improve chemical and thermal stability and mechanical properties. In addition, the DMFC performance of the DCM outperforms that of the end-group cross-linked SPAES and Nafion (R) 212 due to its excellent fuel barrier property in spite of relatively low proton conductivity, which is derived from the content of the non-proton conducting IPAES copolymer. Consequently, the DCM has great potential as an electrolyte membrane for DMFC applications. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0378775315002220http://hdl.handle.net/20.500.11754/24670
ISSN
0378-7753; 1873-2755
DOI
http://dx.doi.org/10.1016/j.jpowsour.2015.01.191
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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