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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2239
Title: Coating and lamination of Nafion117 with partially sulfonated PVdF for low methanol crossover in DMFC applications
Authors: Kumar P.
Kundu P.P.
Published in: Electrochimica Acta
Abstract: Sulfonation of PVdF was carried out in the presence of chlorosulfonic acid at 60 °C. The presence of characteristic peaks of sulfonic acid in the FT-IR spectra confirmed the successful sulfonation of PVdF. X-ray diffraction was conducted to analyze the effect of sulfonation on the crystallinity of PVdF. On sulfonation for a period of 2 h, the maximum DS value achieved was 33%. This sulfonated PVdF resin was utilized as a laminate and/or coating material for the modification of Nafion-117. The laminated and coated Nafion-117 as polymer electrolyte membranes in direct methanol fuel cell (DMFC) exhibited significantly lower methanol crossover by magnitude of two orders, leading to their respective higher membrane selectivities and OCV (open circuit voltage) over prisine Nafion-117 membrane. By operating the DMFC with highly concentrated methanol (5 M), the cell efficiency (maximum power density) for the laminated and coated Nafion 117 membranes was found to be superior over that of pristine Nafion-117. © 2015 Elsevier Ltd. All rights reserved.
Citation: Electrochimica Acta (2015), 173(): 124-130
URI: https://doi.org/10.1016/j.electacta.2015.05.044
http://repository.iitr.ac.in/handle/123456789/2239
Issue Date: 2015
Publisher: Elsevier Ltd
Keywords: Direct methanol fuel cell
Laminate polymer
Poly vinylidene fluoride
Polymer electrolyte membrane
Sulfonation
ISSN: 134686
Author Scopus IDs: 55642355800
35475516300
Author Affiliations: Kumar, P., Department of Polymer Science and Technology, Advanced Polymer Laboratory, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
Kundu, P.P., Department of Polymer Science and Technology, Advanced Polymer Laboratory, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
Funding Details: PPK is thankful to the Ministry of New Renewable Energy (MNRE, GOI) for a grant-in-aid. PK would like to thank the Department of Science and Technology (DST, GOI) for providing an INSPIRE fellowship.
Corresponding Author: Kundu, P.P.; Department of Polymer Science and Technology, Advanced Polymer Laboratory, University of Calcutta, 92, A. P. C. Road, India
Appears in Collections:Journal Publications [CH]

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