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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Stoševski, IvanKrstić, Jelena

Vokić, Nikola
Radosavljević, Miljan
Kačarević-Popović, Zorica M.

Miljanić, Šćepan S.

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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 conductivitySource:
Energy, 2015, 90, 595-604Publisher:
- 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
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VinčaTY - 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 . .