Electrical and structural studies of ionic liquid-based poly(vinyl alcohol) proton conductors

Chiam Wen Liew; K. H. Arifin; J. Kawamura; Y. Iwai; S. Ramesh; A. K. Arof

doi:10.1016/j.jnoncrysol.2015.06.008

Electrical and structural studies of ionic liquid-based poly(vinyl alcohol) proton conductors

Chiam Wen Liew, K. H. Arifin, J. Kawamura, Y. Iwai, S. Ramesh, A. K. Arof

NanoTerasu Co-Creation Promotion Division

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

24 Citations (Scopus)

Abstract

Ionic liquid-based proton conducting polymer electrolytes containing poly(vinyl alcohol) (PVA), ammonium acetate (CH₃COONH₄) and 1-butyl-3-methylimidazolium bromide (BmImBr) are prepared and investigated in this present work. The ionic conductivity of polymer electrolytes increases with temperature as shown in temperature dependent-ionic conductivity study. All the polymer electrolytes follow Vogel-Tamman-Fulcher (VTF) relationship. This principle infers the coupling effect of ionic hopping mechanism and free volume theory. The pseudo-activation energy of all the polymer electrolytes is also determined by fitting the plots with VTF empirical equation. The complexation between PVA, CH₃COONH₄ and BmImBr is verified in Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) study. Addition of ionic liquid reduces the crystallinity of polymer electrolytes as proven in x-ray diffraction (XRD) by calculating the degree of crystallinity of polymer electrolytes. The crystallite sizes of polymer electrolytes are also determined using XRD. Proton nuclear magnetic resonance (H-NMR) spectrum reveals the rapid conduction mechanism in the polymer electrolyte by determining the ion diffusion coefficient.

Original language	English
Pages (from-to)	163-172
Number of pages	10
Journal	Journal of Non-Crystalline Solids
Volume	425
DOIs	https://doi.org/10.1016/j.jnoncrysol.2015.06.008
Publication status	Published - 2015 Jun 18

Keywords

Crystallinity
FTIR
Ionic liquid
NMR
Proton conductors

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10.1016/j.jnoncrysol.2015.06.008

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title = "Electrical and structural studies of ionic liquid-based poly(vinyl alcohol) proton conductors",

abstract = "Ionic liquid-based proton conducting polymer electrolytes containing poly(vinyl alcohol) (PVA), ammonium acetate (CH3COONH4) and 1-butyl-3-methylimidazolium bromide (BmImBr) are prepared and investigated in this present work. The ionic conductivity of polymer electrolytes increases with temperature as shown in temperature dependent-ionic conductivity study. All the polymer electrolytes follow Vogel-Tamman-Fulcher (VTF) relationship. This principle infers the coupling effect of ionic hopping mechanism and free volume theory. The pseudo-activation energy of all the polymer electrolytes is also determined by fitting the plots with VTF empirical equation. The complexation between PVA, CH3COONH4 and BmImBr is verified in Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) study. Addition of ionic liquid reduces the crystallinity of polymer electrolytes as proven in x-ray diffraction (XRD) by calculating the degree of crystallinity of polymer electrolytes. The crystallite sizes of polymer electrolytes are also determined using XRD. Proton nuclear magnetic resonance (H-NMR) spectrum reveals the rapid conduction mechanism in the polymer electrolyte by determining the ion diffusion coefficient.",

keywords = "Crystallinity, FTIR, Ionic liquid, NMR, Proton conductors",

author = "Liew, {Chiam Wen} and Arifin, {K. H.} and J. Kawamura and Y. Iwai and S. Ramesh and Arof, {A. K.}",

note = "Funding Information: This work was supported by the High Impact Research Grant ( H-21001-F000046 ) from Ministry of Education , Malaysia and University of Malaya Research Grant ( RP025A-14AFR ). One of the authors, Chiam‐Wen Liew gratefully acknowledges the “Skim Bright Sparks Universiti Malaya” ( SBSUM ) for financial support. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V. All rights reserved.",

year = "2015",

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day = "18",

doi = "10.1016/j.jnoncrysol.2015.06.008",

language = "English",

volume = "425",

pages = "163--172",

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T1 - Electrical and structural studies of ionic liquid-based poly(vinyl alcohol) proton conductors

AU - Liew, Chiam Wen

AU - Arifin, K. H.

AU - Kawamura, J.

AU - Iwai, Y.

AU - Ramesh, S.

AU - Arof, A. K.

N1 - Funding Information: This work was supported by the High Impact Research Grant ( H-21001-F000046 ) from Ministry of Education , Malaysia and University of Malaya Research Grant ( RP025A-14AFR ). One of the authors, Chiam‐Wen Liew gratefully acknowledges the “Skim Bright Sparks Universiti Malaya” ( SBSUM ) for financial support. Publisher Copyright: © 2015 Elsevier B.V. All rights reserved.

PY - 2015/6/18

Y1 - 2015/6/18

N2 - Ionic liquid-based proton conducting polymer electrolytes containing poly(vinyl alcohol) (PVA), ammonium acetate (CH3COONH4) and 1-butyl-3-methylimidazolium bromide (BmImBr) are prepared and investigated in this present work. The ionic conductivity of polymer electrolytes increases with temperature as shown in temperature dependent-ionic conductivity study. All the polymer electrolytes follow Vogel-Tamman-Fulcher (VTF) relationship. This principle infers the coupling effect of ionic hopping mechanism and free volume theory. The pseudo-activation energy of all the polymer electrolytes is also determined by fitting the plots with VTF empirical equation. The complexation between PVA, CH3COONH4 and BmImBr is verified in Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) study. Addition of ionic liquid reduces the crystallinity of polymer electrolytes as proven in x-ray diffraction (XRD) by calculating the degree of crystallinity of polymer electrolytes. The crystallite sizes of polymer electrolytes are also determined using XRD. Proton nuclear magnetic resonance (H-NMR) spectrum reveals the rapid conduction mechanism in the polymer electrolyte by determining the ion diffusion coefficient.

AB - Ionic liquid-based proton conducting polymer electrolytes containing poly(vinyl alcohol) (PVA), ammonium acetate (CH3COONH4) and 1-butyl-3-methylimidazolium bromide (BmImBr) are prepared and investigated in this present work. The ionic conductivity of polymer electrolytes increases with temperature as shown in temperature dependent-ionic conductivity study. All the polymer electrolytes follow Vogel-Tamman-Fulcher (VTF) relationship. This principle infers the coupling effect of ionic hopping mechanism and free volume theory. The pseudo-activation energy of all the polymer electrolytes is also determined by fitting the plots with VTF empirical equation. The complexation between PVA, CH3COONH4 and BmImBr is verified in Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) study. Addition of ionic liquid reduces the crystallinity of polymer electrolytes as proven in x-ray diffraction (XRD) by calculating the degree of crystallinity of polymer electrolytes. The crystallite sizes of polymer electrolytes are also determined using XRD. Proton nuclear magnetic resonance (H-NMR) spectrum reveals the rapid conduction mechanism in the polymer electrolyte by determining the ion diffusion coefficient.

KW - Crystallinity

KW - FTIR

KW - Ionic liquid

KW - NMR

KW - Proton conductors

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JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

ER -

Electrical and structural studies of ionic liquid-based poly(vinyl alcohol) proton conductors

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Keywords

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