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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2254
Title: Partially Sulfonated Poly(vinylidene fluoride) Induced Enhancements of Properties and DMFC Performance of Nafion Electrolyte Membrane
Authors: Das S.
Dutta K.
Hazra S.
Kundu, Patit Paban
Published in: Fuel Cells
Abstract: Partially sulfonated poly(vinylidene fluoride) (SPVdF) has been prepared by incorporation of sulfonic acid groups within poly(vinylidene fluoride), using chlorosulfonic acid as the sulfonating agent. The degree of sulfonation (DS) has been varied by modulating the duration of the sulfonation reaction. Blending of SPVdF (having DS = 36.78%) with Nafion at a constituent wt.% ratio of SPVdF:Nafion = 70:30 has resulted in the fabrication of polymer electrolyte membrane with superior properties compared to pristine Nafion-117 membrane. This particular blend composition exhibited a proton conductivity value of 3.6 × 10-2 S cm-1 (i.e. ?12.5% increase over Nafion-117), a methanol permeability value of 6.81 × 10-7 cm2 s-1 at 6M methanol concentration (i.e. ?99.31% decrease from Nafion-117) and a corresponding membrane selectivity value of 5.29 × 104 Ss cm-3 (i.e. an increase of approximately two-orders of magnitude over Nafion-117) at 20 °C. In addition, this blend composition has also exhibited (a) better heat stability at temperatures as high as 160 °C by virtue of it possessing higher glass transition temperature, (b) higher storage modulus, (c) higher stress relaxation at high angular frequency and (d) superior DMFC performance at high methanol feed concentration in presence of humidified, as well as, non-humidified air as the catholyte, compared to Nafion-117 membrane. Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Citation: Fuel Cells (2015), 15(3): 505-515
URI: https://doi.org/10.1002/fuce.201500018
http://repository.iitr.ac.in/handle/123456789/2254
Issue Date: 2015
Publisher: John Wiley and Sons Ltd
Keywords: DMFC Performance
Membrane Selectivity
Nafion
Partially Sulfonated Poly(vinylidene fluoride)
Rheological Properties
ISSN: 16156846
Author Scopus IDs: 55820818900
7005115695
7005927126
35475516300
Author Affiliations: Das, S., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
Dutta, K., Advanced Polymer Laboratory, Department of Polymer Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata, 700009, India
Hazra, S., 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
Appears in Collections:Journal Publications [CH]

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