Methanol crossover reduction and power enhancement of methanol fuel cells with polyvinyl alcohol coated Nafion membranes

Arjun Sunil Rao; K. R. Rashmi; D. V. Manjunatha; A. Jayarama; V. Veena Devi Shastrimath; Richard Pinto

doi:10.1016/j.matpr.2020.02.093

Methanol crossover reduction and power enhancement of methanol fuel cells with polyvinyl alcohol coated Nafion membranes

Arjun Sunil Rao^*
, K. R. Rashmi
, D. V. Manjunatha
, A. Jayarama
, V. Veena Devi Shastrimath
, Richard Pinto

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

26 Citations (Scopus)

Abstract

This paper presents the effect of polyvinyl alcohol (PVA) coated Nafion membranes on their water uptake, swelling and proton conductivity for various PVA coating thicknesses. These studies show that the optimum coating thickness of PVA on Nafion is 2 µm. Methanol permeation studies show that 2 µm thick PVA coating forms a barrier for methanol and significantly reduces methanol permeation through the membranes. Further, passive methanol fuel cells are tested with 2 µm thick PVA coat on Nafion as proton exchange membranes and their polarization plots show a significant enhancement in power as compared to the methanol fuel cells with pristine Nafion due to reduction in methanol crossover.

Original language	English
Pages (from-to)	344-351
Number of pages	8
Journal	Materials Today: Proceedings
Volume	35
DOIs	https://doi.org/10.1016/j.matpr.2020.02.093
Publication status	Published - 2019
Event	2019 International Conference on Laser Deposition: Nanostructures, Hetero-structures and 2D layers, iCold 2019 - Moodbidri, India Duration: 27-11-2019 → 29-11-2019

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1016/j.matpr.2020.02.093

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title = "Methanol crossover reduction and power enhancement of methanol fuel cells with polyvinyl alcohol coated Nafion membranes",

abstract = "This paper presents the effect of polyvinyl alcohol (PVA) coated Nafion membranes on their water uptake, swelling and proton conductivity for various PVA coating thicknesses. These studies show that the optimum coating thickness of PVA on Nafion is 2 µm. Methanol permeation studies show that 2 µm thick PVA coating forms a barrier for methanol and significantly reduces methanol permeation through the membranes. Further, passive methanol fuel cells are tested with 2 µm thick PVA coat on Nafion as proton exchange membranes and their polarization plots show a significant enhancement in power as compared to the methanol fuel cells with pristine Nafion due to reduction in methanol crossover.",

author = "Rao, \{Arjun Sunil\} and Rashmi, \{K. R.\} and Manjunatha, \{D. V.\} and A. Jayarama and \{Veena Devi Shastrimath\}, V. and Richard Pinto",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd.; 2019 International Conference on Laser Deposition: Nanostructures, Hetero-structures and 2D layers, iCold 2019 ; Conference date: 27-11-2019 Through 29-11-2019",

year = "2019",

doi = "10.1016/j.matpr.2020.02.093",

language = "English",

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pages = "344--351",

journal = "Materials Today: Proceedings",

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TY - JOUR

T1 - Methanol crossover reduction and power enhancement of methanol fuel cells with polyvinyl alcohol coated Nafion membranes

AU - Rao, Arjun Sunil

AU - Rashmi, K. R.

AU - Manjunatha, D. V.

AU - Jayarama, A.

AU - Veena Devi Shastrimath, V.

AU - Pinto, Richard

PY - 2019

Y1 - 2019

N2 - This paper presents the effect of polyvinyl alcohol (PVA) coated Nafion membranes on their water uptake, swelling and proton conductivity for various PVA coating thicknesses. These studies show that the optimum coating thickness of PVA on Nafion is 2 µm. Methanol permeation studies show that 2 µm thick PVA coating forms a barrier for methanol and significantly reduces methanol permeation through the membranes. Further, passive methanol fuel cells are tested with 2 µm thick PVA coat on Nafion as proton exchange membranes and their polarization plots show a significant enhancement in power as compared to the methanol fuel cells with pristine Nafion due to reduction in methanol crossover.

AB - This paper presents the effect of polyvinyl alcohol (PVA) coated Nafion membranes on their water uptake, swelling and proton conductivity for various PVA coating thicknesses. These studies show that the optimum coating thickness of PVA on Nafion is 2 µm. Methanol permeation studies show that 2 µm thick PVA coating forms a barrier for methanol and significantly reduces methanol permeation through the membranes. Further, passive methanol fuel cells are tested with 2 µm thick PVA coat on Nafion as proton exchange membranes and their polarization plots show a significant enhancement in power as compared to the methanol fuel cells with pristine Nafion due to reduction in methanol crossover.

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U2 - 10.1016/j.matpr.2020.02.093

DO - 10.1016/j.matpr.2020.02.093

M3 - Conference article

AN - SCOPUS:85090473425

SN - 2214-7853

VL - 35

SP - 344

EP - 351

JO - Materials Today: Proceedings

JF - Materials Today: Proceedings

T2 - 2019 International Conference on Laser Deposition: Nanostructures, Hetero-structures and 2D layers, iCold 2019

Y2 - 27 November 2019 through 29 November 2019

ER -

Methanol crossover reduction and power enhancement of methanol fuel cells with polyvinyl alcohol coated Nafion membranes

Abstract

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