Continuous channels created by self-assembly of ionic cross-linked polysiloxane-Nafion nanocompositesElectronic supplementary information (ESI) available: Experimental section; solid-state NMR spectra; XPS spectra; ATR/FTIR spectra; oxidative stability and photos. See DOI: 10.1039/c2py20203d
Ionically cross-linked ionomers have been developed via sol-gel chemistry by introducing poly(vinylimidazole)-functionalized mercaptopropyltrimethoxysilane into Nafion. The cross-linked polysiloxane framework endows the membrane with homogeneity and good stability. The ionical cross-linking enables...
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Main Authors | , , , |
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Format | Journal Article |
Language | English |
Published |
03.07.2012
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Online Access | Get full text |
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Summary: | Ionically cross-linked ionomers have been developed
via
sol-gel chemistry by introducing poly(vinylimidazole)-functionalized mercaptopropyltrimethoxysilane into Nafion. The cross-linked polysiloxane framework endows the membrane with homogeneity and good stability. The ionical cross-linking enables the self-assembly between the inorganic framework and Nafion, which produces concentrated and inter-connected channels. This structure offers a practicably effective blocking effect to minimize the methanol cross-over problem in DMFCs, and improves the power output by 35% in comparison with a commercial Nafion membrane.
Continuous channels created by self-assembly of imidazole-anchored polysiloxane and Nafion were found to effectively enhance proton transportation. |
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Bibliography: | Electronic supplementary information (ESI) available: Experimental section; solid-state NMR spectra; XPS spectra; ATR/FTIR spectra; oxidative stability and photos. See DOI 10.1039/c2py20203d |
ISSN: | 1759-9954 1759-9962 |
DOI: | 10.1039/c2py20203d |