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Improved Poly(vinyl alcohol) (PVA) based matrix as a potential solid electrolyte for electrochemical energy conversion devices, obtained by gamma irradiation

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Authors
Stoševski, Ivan
Krstić, Jelena
Vokić, Nikola
Radosavljević, Miljan
Kačarević-Popović, Zorica M.
Miljanić, Šćepan S.
Article (Published version)
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Abstract
PVA (Poly(vinyl alcohol)) matrixes were developed for potential application in electrochemical energy conversion devices, like batteries, alkaline fuel cells and electrolyzers. They were prepared by gamma-irradiation of aqueous PVA solutions, followed by different post irradiation treatments. By immersion in an electrolyte they become membranes with high ionic conductivities. The treatments were shown as the key factor determining the conductivity, through affecting their structure. An improved structure has large fractional free volume, and allows high electrolyte uptake and thus high conductivity (0.30 S cm(-1) -0.34 S cm(-1)). The structure, as well as the conductivity, has not been changed even after a period of 14 months, although the membranes have been exposed to strong alkaline medium. Besides high and long-term conductivity of the KOH doped membranes, other important properties for application in the devices were investigated, like thermal stability and gas crossover through t...he membranes. The 10% PVA(25kGy) membrane doped with saturated LiNO3 solution was tested in a rechargeable aqueous Li-ion battery. Due to its high conductivity it allowed an electrode material to have the same coulombic efficiency as it would have in liquid LiNO3, showing good compatibility with the material. All these properties make the memebranes attractive candidates for possible application in the electrochemical devices. (C) 2015 Elsevier Ltd. All rights reserved.

Keywords:
Energy conversion / Electrochemical devices / Membrane / Poly(vinyl alcohol) (PVA) matrix / Gamma radiation / Ionic conductivity
Source:
Energy, 2015, 90, 595-604
Publisher:
  • Elsevier
Funding / projects:
  • Lithium-ion batteries and fuel cells - research and development (RS-45014)
  • Functional, Functionalized and Advanced Nanomaterials (RS-45005)
  • NATO through the Science for Peace Project [EAP.SFPP 984925 - DURAPEM]

DOI: 10.1016/j.energy.2015.07.096

ISSN: 0360-5442; 1873-6785

WoS: 000364248100055

Scopus: 2-s2.0-84939863157
[ Google Scholar ]
19
16
URI
https://vinar.vin.bg.ac.rs/handle/123456789/799
Collections
  • WoS Import
Institution/Community
Vinča
TY  - JOUR
AU  - Stoševski, Ivan
AU  - Krstić, Jelena
AU  - Vokić, Nikola
AU  - Radosavljević, Miljan
AU  - Kačarević-Popović, Zorica M.
AU  - Miljanić, Šćepan S.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/799
AB  - PVA (Poly(vinyl alcohol)) matrixes were developed for potential application in electrochemical energy conversion devices, like batteries, alkaline fuel cells and electrolyzers. They were prepared by gamma-irradiation of aqueous PVA solutions, followed by different post irradiation treatments. By immersion in an electrolyte they become membranes with high ionic conductivities. The treatments were shown as the key factor determining the conductivity, through affecting their structure. An improved structure has large fractional free volume, and allows high electrolyte uptake and thus high conductivity (0.30 S cm(-1) -0.34 S cm(-1)). The structure, as well as the conductivity, has not been changed even after a period of 14 months, although the membranes have been exposed to strong alkaline medium. Besides high and long-term conductivity of the KOH doped membranes, other important properties for application in the devices were investigated, like thermal stability and gas crossover through the membranes. The 10% PVA(25kGy) membrane doped with saturated LiNO3 solution was tested in a rechargeable aqueous Li-ion battery. Due to its high conductivity it allowed an electrode material to have the same coulombic efficiency as it would have in liquid LiNO3, showing good compatibility with the material. All these properties make the memebranes attractive candidates for possible application in the electrochemical devices. (C) 2015 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Energy
T1  - Improved Poly(vinyl alcohol) (PVA) based matrix as a potential solid electrolyte for electrochemical energy conversion devices, obtained by gamma irradiation
VL  - 90
SP  - 595
EP  - 604
DO  - 10.1016/j.energy.2015.07.096
ER  - 
@article{
author = "Stoševski, Ivan and Krstić, Jelena and Vokić, Nikola and Radosavljević, Miljan and Kačarević-Popović, Zorica M. and Miljanić, Šćepan S.",
year = "2015",
abstract = "PVA (Poly(vinyl alcohol)) matrixes were developed for potential application in electrochemical energy conversion devices, like batteries, alkaline fuel cells and electrolyzers. They were prepared by gamma-irradiation of aqueous PVA solutions, followed by different post irradiation treatments. By immersion in an electrolyte they become membranes with high ionic conductivities. The treatments were shown as the key factor determining the conductivity, through affecting their structure. An improved structure has large fractional free volume, and allows high electrolyte uptake and thus high conductivity (0.30 S cm(-1) -0.34 S cm(-1)). The structure, as well as the conductivity, has not been changed even after a period of 14 months, although the membranes have been exposed to strong alkaline medium. Besides high and long-term conductivity of the KOH doped membranes, other important properties for application in the devices were investigated, like thermal stability and gas crossover through the membranes. The 10% PVA(25kGy) membrane doped with saturated LiNO3 solution was tested in a rechargeable aqueous Li-ion battery. Due to its high conductivity it allowed an electrode material to have the same coulombic efficiency as it would have in liquid LiNO3, showing good compatibility with the material. All these properties make the memebranes attractive candidates for possible application in the electrochemical devices. (C) 2015 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Energy",
title = "Improved Poly(vinyl alcohol) (PVA) based matrix as a potential solid electrolyte for electrochemical energy conversion devices, obtained by gamma irradiation",
volume = "90",
pages = "595-604",
doi = "10.1016/j.energy.2015.07.096"
}
Stoševski, I., Krstić, J., Vokić, N., Radosavljević, M., Kačarević-Popović, Z. M.,& Miljanić, Š. S.. (2015). Improved Poly(vinyl alcohol) (PVA) based matrix as a potential solid electrolyte for electrochemical energy conversion devices, obtained by gamma irradiation. in Energy
Elsevier., 90, 595-604.
https://doi.org/10.1016/j.energy.2015.07.096
Stoševski I, Krstić J, Vokić N, Radosavljević M, Kačarević-Popović ZM, Miljanić ŠS. Improved Poly(vinyl alcohol) (PVA) based matrix as a potential solid electrolyte for electrochemical energy conversion devices, obtained by gamma irradiation. in Energy. 2015;90:595-604.
doi:10.1016/j.energy.2015.07.096 .
Stoševski, Ivan, Krstić, Jelena, Vokić, Nikola, Radosavljević, Miljan, Kačarević-Popović, Zorica M., Miljanić, Šćepan S., "Improved Poly(vinyl alcohol) (PVA) based matrix as a potential solid electrolyte for electrochemical energy conversion devices, obtained by gamma irradiation" in Energy, 90 (2015):595-604,
https://doi.org/10.1016/j.energy.2015.07.096 . .

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