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- W2022072928 abstract "Sulfonated silica nanoparticles (SA-SNP) are utilized as a functional additive to prepare polybenzimidazole (PBI)/SA-SNP nanocomposite membranes. The sulfonic acid groups of SA-SNP form ionic linkages with PBI chains, improve the compatibility between SA-SNP and PBI, and enhance the mechanical strength of the PBI/SA-SNP nanocomposite membranes. After acid doping with phosphoric acid, PBI/SA-SNP nanocomposite membranes exhibit depressions on methanol permeability and enhancements on proton conductivity comparing to the pristine PBI membrane. The proton conductivity of PBI/SA-SNP-10 (possessing 10 wt% SA-SNP) membrane is of about 3-folds of that observed with pristine PBI membrane. The selectivity (the ratio of proton conductivity to the methanol permeability) of PBI/SA-SNP-15 is of about 1.3-folds of that of the Nafion® 117 membrane. The above results indicate the PBI/SA-SNP nanocomposite membranes could be utilized as the proton exchange membranes for direct methanol fuel cells." @default.
- W2022072928 created "2016-06-24" @default.
- W2022072928 creator A5032257494 @default.
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- W2022072928 date "2009-04-01" @default.
- W2022072928 modified "2023-09-25" @default.
- W2022072928 title "Preparation and properties of nanocomposite membranes of polybenzimidazole/sulfonated silica nanoparticles for proton exchange membranes" @default.
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- W2022072928 doi "https://doi.org/10.1016/j.memsci.2009.01.045" @default.
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