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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2228
Title: Fabrication of laminated and coated Nafion 117 membranes for reduced mass transfer in microbial fuel cells
Authors: Kumar V.
Kumar P.
Nandy A.
Kundu, Patit Paban
Published in: RSC Advances
Abstract: Sulfonation of polyvinylidinefluoride (PVdF) with chlorosulfonic acid for 2 hours revealed a respective 33% degree of sulfonation (DS) in a SPVdF membrane. The resulting sulfonated PVdF resins were used for Nafion 117 modification as coat and laminating materials, where the modified Nafion 117 membranes (laminated and coated with SPVdF) were used as polymer electrolyte membranes in microbial fuel cells (MFCs). Coating/lamination exhibited reduced oxygen diffusion across membranes by a magnitude of less than two orders over a pristine Nafion 117 membrane. This resulted in higher open circuit voltages (OCVs) with increased coulombic efficiency (CE) in MFCs. With SPVdF coated and laminated Nafion 117 membranes, respective IEC values of 0.57 and 0.46 meq g-1 and proton conductivities of 5.91 × 10-3 and 5.11 × 10-3 S cm-1 were observed, indicating maximum power and current densities of 446.45 ± 21 mW m-2 & 1721.78 ± 86 mA m-2 and 413.79 ± 20 mW m-2 & 1657.57 ± 82 mA m-2 in MFCs using mixed Firmicutes as biocatalysts. The obtained coulombic efficiencies were higher (approx. 1-2%) than those of pristine Nafion 117, indicative of its reduced oxygen diffusion at the anode. In effect, the study enumerates the efficiency of modified Nafion 117 with sulfonated PVdF coated and laminated membranes as a separating barrier in single-chambered MFCs for microbial bio-energy conversion. © The Royal Society of Chemistry 2016.
Citation: RSC Advances (2016), 6(26): 21526-21534
URI: https://doi.org/10.1039/c6ra02234k
http://repository.iitr.ac.in/handle/123456789/2228
Issue Date: 2016
Publisher: Royal Society of Chemistry
ISSN: 20462069
Author Scopus IDs: 57197697614
55642355800
55813019000
35475516300
Author Affiliations: Kumar, V., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, Kolkata, 700009, India
Kumar, P., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, Kolkata, 700009, India
Nandy, A., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, Kolkata, 700009, India
Kundu, P.P., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, Kolkata, 700009, India
Corresponding Author: Kundu, P.P.; Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92 A. P. C. Road, India; email: ppk923@yahoo.com
Appears in Collections:Journal Publications [CH]

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