Development of a proton exchange membrane based on trifluoromethanesulfonylimide-grafted polybenzimidazole

被引：0
作者：
Hoon Han
Hiroto Miura
Yuki Motoishi
Naoki Tanaka
Tsuyohiko Fujigaya
机构：
[1] Kyushu University,Department of Applied Chemistry, Graduate School of Engineering
[2] Kyushu University,The World Premier International Research Center Initiative, International Institute of Carbon Neutral Energy Research
[3] Kyushu University,Department of Chemical Engineering, Graduate School of Engineering
[4] Kyushu University,Center for Molecular Systems
来源：
Polymer Journal | 2021年 / 53卷
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摘要：
Trifluoromethanesulfonylimide-grafted polybenzimidazole (PBI-TFSI) was synthesized for proton exchange membrane (PEM) applications. Its proton conductivity was (a) less dependent on humidity and (b) higher than that of conventional fluorine-based PEM (Nafion) and propanesulfonic acid-grafted PBI (PBI-PS) at a relative humidity of 40%. The chemical structure of PBI-TFSI was investigated using 1H and 19F nuclear magnetic resonance and Fourier transform infrared spectroscopy. The membranes exhibited good transparency, flexibility, and thermal stability up to 350 °C. Membranes with different side chain grafting ratios were prepared, and the water uptake and hydration number of the PBI-TFSI membranes were lower than those of the PBI-PS membranes, most likely because of the hydrophobicity of the side chain. The higher proton concentration provided by TFSI with stronger acidity than PS might be the reason for the higher proton conductivities of PBI-TFSI.
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页码：1403 / 1411
页数：8
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[31]  
El-Sayed HA(2001)On the doping of sulfonated polybenzimidazole with strong bases Solid State Ion. 145 61-80
[32]  
Garlyyev B(2007)Synthesis of sulfonated polybenzimidazoles from functionalized monomers: preparation of ionic conducting membranes Macromolecules. 40 983-34
[33]  
Bandarenka AS(1994)The gas-phase acidities of very strong neutral bronsted acids J Am Chem Soc. 116 3047-304
[34]  
Xiao P(2019)Improved proton conductive membranes from poly(phenylenebenzophenone)s with pendant sulfonyl imide acid groups for fuel cells J Power Sources. 442 227233-733
[35]  
Li J(2019)Thermally and chemically stable poly(phenylenebenzophenone) membranes for proton exchange membrane fuel cells by Ni (0) catalyst J Ind Eng Chem. 76 233-35
[36]  
Tang H(2011)Synthesis of networked polymers by copolymerization of monoepoxy-substituted lithium sulfonylimide and diepoxy-substituted poly(ethylene glycol), and their properties J Polym Sci, Part A. 49 1874-45
[37]  
Wang Z(2017)Single ion conducting polymer electrolytes based on versatile polyurethanes Electrochim Acta. 241 526-10
[38]  
Pan M(2009)Infrared spectroscopy of bis[(perfluoroalkyl)sulfonyl] Imide ionomer membrane materials J Phys Chem B. 113 6299-4
[39]  
Economou NJ(2013)Trifluoromethanesulfonamides and related compounds Chem Rev. 113 699-88
[40]  
Barnes AM(2017)Infrared dynamics study of thermally treated perfluoroimide acid proton exchange membranes Phys Chem Chem Phys. 19 626-38
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