Synthesis and characterization of proton exchange membranes based on sulfonated poly(fluorenyl ether nitrile oxynaphthalate) for direct methanol fuel cells

Title
Synthesis and characterization of proton exchange membranes based on sulfonated poly(fluorenyl ether nitrile oxynaphthalate) for direct methanol fuel cells
Authors
성열환원종옥김상경남기돈김수길김동원
Keywords
Direct methanol fuel cell; Proton exchange membrane; Proton conductivity; Methanol permeability; Sulfonated aromatic polymer
Issue Date
2011-06
Publisher
International journal of hydrogen energy
Citation
VOL 36, NO 14, 8492-8498
Abstract
A series of sulfonated poly(fluorenyl ether nitrile oxynaphthalate) (SPFENO) copolymers with different degree of sulfonation (DS) are synthesized via nucleophilic polycondensation reactions with commercially available monomers. Incorporation of the naphthalanesulfonate group into the copolymers and their copolymer structures are confirmed by 1H NMR spectroscopy. Thermal stability, mechanical properties, water uptake, swelling behavior, proton conductivity and methanol permeability of the SPFENO membranes are investigated with respect to their structures. The electrochemical performance of a direct methanol fuel cell (DMFC) assembled with the SPFENO membrane was evaluated and compared to a DMFC with a Nafion 117 membrane. The DMFC assembled with the SPFENO membrane of proper DS exhibits better electrochemical performance compared to the Nafion 117-based cell.
URI
http://pubs.kist.re.kr/handle/201004/39867
ISSN
0360-3199
Appears in Collections:
KIST Publication > Article
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