Partial sulfonation of PVdF-co-HFP: A preliminary study and characterization for application in direct methanol fuel cell

Suparna Das; Piyush Kumar; Kingshuk Dutta; Patit Paban Kundu

doi:10.1016/j.apenergy.2013.07.030

Partial sulfonation of PVdF-co-HFP: A preliminary study and characterization for application in direct methanol fuel cell

Suparna Das, Piyush Kumar, Kingshuk Dutta, Patit Paban Kundu

University of Calcutta

Research output: Contribution to journal › Article › peer-review

123 Scopus citations

Abstract

Sulfonation of PVdF-co-HFP was conducted by treating the copolymer with chlorosulfonic acid. The efficiency of this sulfonated copolymer towards application as a polymer electrolyte membrane in direct methanol fuel cell (DMFC) was evaluated. For this purpose, we determined the thermal stability, water uptake, ion exchange capacity (IEC), methanol crossover, and proton conductivity of the prepared membranes as functions of duration and degree of sulfonation. The characteristic aromatic peaks obtained in the FT-IR spectra confirmed the successful sulfonation of PVdF-co-HFP. The effect of sulfonation on the semi-crystalline nature of pure PVdF-co-HFP was determined from XRD analysis. Water uptake results indicated that a sulfonation time of 7h produced maximum water uptake value of about 20%, with a corresponding IEC and proton conductivity values of about 0.42meqg^-1 and 0.00375Scm^-1 respectively. The maximum current density was recorded to be 30mAcm^-2 at 0.2V potential.

Original language	English
Pages (from-to)	169-177
Number of pages	9
Journal	Applied Energy
Volume	113
DOIs	https://doi.org/10.1016/j.apenergy.2013.07.030
State	Published - Jan 2014
Externally published	Yes

Bibliographical note

Funding Information:
PPK is thankful to the Ministry of New Renewable Energy (MNRE, GOI) for a grant-in-aid and Department of Science and Technology (DST, GOI) for providing the INSPIRE fellowship to PK, and to the Council of Scientific and Industrial Research (CSIR, India) for a fellowship to SD. KD is thankful to the CSIR for providing the Senior Research Fellowship.

Funding

PPK is thankful to the Ministry of New Renewable Energy (MNRE, GOI) for a grant-in-aid and Department of Science and Technology (DST, GOI) for providing the INSPIRE fellowship to PK, and to the Council of Scientific and Industrial Research (CSIR, India) for a fellowship to SD. KD is thankful to the CSIR for providing the Senior Research Fellowship.

Funders	Funder number
Ministry of New and Renewable Energy India
Bangladesh Council of Scientific and Industrial Research
Department of Science and Technology, Government of Kerala

Keywords

Direct methanol fuel cell
Ion exchange capacity
PVdF-co-HFP
Polymer electrolyte membrane
Sulfonation

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10.1016/j.apenergy.2013.07.030

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title = "Partial sulfonation of PVdF-co-HFP: A preliminary study and characterization for application in direct methanol fuel cell",

abstract = "Sulfonation of PVdF-co-HFP was conducted by treating the copolymer with chlorosulfonic acid. The efficiency of this sulfonated copolymer towards application as a polymer electrolyte membrane in direct methanol fuel cell (DMFC) was evaluated. For this purpose, we determined the thermal stability, water uptake, ion exchange capacity (IEC), methanol crossover, and proton conductivity of the prepared membranes as functions of duration and degree of sulfonation. The characteristic aromatic peaks obtained in the FT-IR spectra confirmed the successful sulfonation of PVdF-co-HFP. The effect of sulfonation on the semi-crystalline nature of pure PVdF-co-HFP was determined from XRD analysis. Water uptake results indicated that a sulfonation time of 7h produced maximum water uptake value of about 20%, with a corresponding IEC and proton conductivity values of about 0.42meqg-1 and 0.00375Scm-1 respectively. The maximum current density was recorded to be 30mAcm-2 at 0.2V potential.",

keywords = "Direct methanol fuel cell, Ion exchange capacity, PVdF-co-HFP, Polymer electrolyte membrane, Sulfonation",

author = "Suparna Das and Piyush Kumar and Kingshuk Dutta and Kundu, {Patit Paban}",

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AU - Das, Suparna

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AU - Kundu, Patit Paban

N1 - Funding Information: PPK is thankful to the Ministry of New Renewable Energy (MNRE, GOI) for a grant-in-aid and Department of Science and Technology (DST, GOI) for providing the INSPIRE fellowship to PK, and to the Council of Scientific and Industrial Research (CSIR, India) for a fellowship to SD. KD is thankful to the CSIR for providing the Senior Research Fellowship.

PY - 2014/1

Y1 - 2014/1

N2 - Sulfonation of PVdF-co-HFP was conducted by treating the copolymer with chlorosulfonic acid. The efficiency of this sulfonated copolymer towards application as a polymer electrolyte membrane in direct methanol fuel cell (DMFC) was evaluated. For this purpose, we determined the thermal stability, water uptake, ion exchange capacity (IEC), methanol crossover, and proton conductivity of the prepared membranes as functions of duration and degree of sulfonation. The characteristic aromatic peaks obtained in the FT-IR spectra confirmed the successful sulfonation of PVdF-co-HFP. The effect of sulfonation on the semi-crystalline nature of pure PVdF-co-HFP was determined from XRD analysis. Water uptake results indicated that a sulfonation time of 7h produced maximum water uptake value of about 20%, with a corresponding IEC and proton conductivity values of about 0.42meqg-1 and 0.00375Scm-1 respectively. The maximum current density was recorded to be 30mAcm-2 at 0.2V potential.

AB - Sulfonation of PVdF-co-HFP was conducted by treating the copolymer with chlorosulfonic acid. The efficiency of this sulfonated copolymer towards application as a polymer electrolyte membrane in direct methanol fuel cell (DMFC) was evaluated. For this purpose, we determined the thermal stability, water uptake, ion exchange capacity (IEC), methanol crossover, and proton conductivity of the prepared membranes as functions of duration and degree of sulfonation. The characteristic aromatic peaks obtained in the FT-IR spectra confirmed the successful sulfonation of PVdF-co-HFP. The effect of sulfonation on the semi-crystalline nature of pure PVdF-co-HFP was determined from XRD analysis. Water uptake results indicated that a sulfonation time of 7h produced maximum water uptake value of about 20%, with a corresponding IEC and proton conductivity values of about 0.42meqg-1 and 0.00375Scm-1 respectively. The maximum current density was recorded to be 30mAcm-2 at 0.2V potential.

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KW - Ion exchange capacity

KW - PVdF-co-HFP

KW - Polymer electrolyte membrane

KW - Sulfonation

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Partial sulfonation of PVdF-co-HFP: A preliminary study and characterization for application in direct methanol fuel cell

Abstract

Bibliographical note

Funding

Keywords

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