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- W3112889732 abstract "In this study, various composite membranes consisting of sulfonated polybenzimidazole (SPBI) and varying amounts of sulfonated graphene oxide (SGO) were synthesized with an aim for their potential application in microbial fuel cells (MFCs). SPBI is prepared from PBI by reacting it with 2-chloro ethane sulfonic acid and the structure of SPBI is confirmed by proton nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy and X ̶ ray diffraction analysis. The proton conductivity, ion exchange capacity (IEC) and tensile modulus of the composites increase with the higher content of SGO in SPBI. Membranes with 3% and 5% SGO content exhibit superior IECs (0.912 and 1.001 meqg ̶ 1) and proton conductivity (0.016 and 0.018 S cm–1) at room temperature. The enhancement of these properties is owing to the increasing content of ̶ SO3H groups in the SGO/SPBI composite, increasing the channel availability for the transport of protons. Amongst the three composite membranes (1%, 3% and 5% of SGO in SPBI), the 3% SGO/SPBI composite membrane showed the highest open-circuit voltage of ~ 669 ± 18 mV, when applied in an MFC. Furthermore, the application of the nanocomposite membrane (3% SGO/SBI) in MFC showed a power density of 472.46 mWm ̶ 2 at a potential value of 0.234 V which was equivalent to 98.16% of Nafion membrane (481.3 mWm ̶ 2). Thus, the newly developed SGO/SPBI composite membranes have the potential for application in MFC." @default.
- W3112889732 created "2020-12-21" @default.
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- W3112889732 date "2021-02-01" @default.
- W3112889732 modified "2023-10-12" @default.
- W3112889732 title "Composite membrane of sulfonated polybenzimidazole and sulfonated graphene oxide for potential application in microbial fuel cell" @default.
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- W3112889732 doi "https://doi.org/10.1016/j.jece.2020.104945" @default.
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