An ionic liquid based gel polymer electrolyte to be employed in power generating applications
Ionic liquid (IL) based gel polymer electrolytes (GPEs) are being investigated extensively at present as substitutes for conventional GPEs based on a polymer, a salt and solvents. The main reason behind this is the drawbacks in usage of solvents. IL based GPEs have been employed for energy stora...
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| Format: | Article |
| Language: | English |
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University of Ruhuna
2018-12-01
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| Series: | Ruhuna Journal of Science |
| Subjects: | |
| Online Access: | https://rjs.ruh.ac.lk/index.php/rjs/article/view/238/221 |
| _version_ | 1831713144156717056 |
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| author | K.W. Prasadini K.S. Perera K.P. Vidanapathirana |
| author_facet | K.W. Prasadini K.S. Perera K.P. Vidanapathirana |
| author_sort | K.W. Prasadini |
| collection | DOAJ |
| description | Ionic liquid (IL) based gel polymer electrolytes (GPEs) are
being investigated extensively at present as substitutes for conventional
GPEs based on a polymer, a salt and solvents. The main reason behind
this is the drawbacks in usage of solvents. IL based GPEs have been
employed for energy storage devices such as batteries and super
capacitors due to their interesting mechanical, physical and
electrochemical properties. This study focused on synthesis preparation
and characterization of an IL based GPE consisting of poly(vinylidene
fluoride-co-hexafluoropropylene) (PVdF-co-HFP), zinc trifluoro metha
-nesulfonate (Zn(CF3SO3)2 - ZnTF) and 1-ethyl-3-methylimidazolium
trifluoromethanesulfonate (1E3MITF). Thin film samples were prepared
using solvent casting method. The optimized composition was found to
be 1 PVdF-co-HFP: 1 1E3MITF: 3 ZnTF (by weight basis). This
mechanically stable, thin film has the maximum room temperature
conductivity of 7.42×10-3 S cm-1. Conductivity variation with
temperature follows Vogel - Tamman - Fulcher (VTF) behavior
confirming the relation of conductivity mechanism with the free volume
theory. The IL based GPE is a purely an ionic conductor having a
considerable anionic contribution. It shows stability up to 2.5 V which
is very much convenient from a practical point of view. Oxidation and
reduction of Zn takes place at the potentials of 0.5 V and –0.5 V,
respectively. In addition, Zn platting and stripping occurs only on the
Zn electrodes but not on the stainless steel (SS) electrodes. Impedance
measurements taken for the GPE continuously for a long period of time
exhibited a satisfactory stability with Zn electrodes. |
| first_indexed | 2024-12-20T23:35:55Z |
| format | Article |
| id | doaj.art-b951116724a545f2b274d36ab4e79c35 |
| institution | Directory Open Access Journal |
| issn | 2536-8400 |
| language | English |
| last_indexed | 2024-12-20T23:35:55Z |
| publishDate | 2018-12-01 |
| publisher | University of Ruhuna |
| record_format | Article |
| series | Ruhuna Journal of Science |
| spelling | doaj.art-b951116724a545f2b274d36ab4e79c352022-12-21T19:23:13ZengUniversity of RuhunaRuhuna Journal of Science2536-84002018-12-0192789110.4038/rjs.v9i2.41An ionic liquid based gel polymer electrolyte to be employed in power generating applicationsK.W. Prasadini0K.S. Perera1https://orcid.org/0000-0003-4491-662XK.P. Vidanapathirana2Department of Electronics, Wayamba University of Sri Lanka, Kuliyapitiya, Sri LankaDepartment of Electronics, Wayamba University of Sri Lanka, Kuliyapitiya, Sri LankaDepartment of Electronics, Wayamba University of Sri Lanka, Kuliyapitiya, Sri LankaIonic liquid (IL) based gel polymer electrolytes (GPEs) are being investigated extensively at present as substitutes for conventional GPEs based on a polymer, a salt and solvents. The main reason behind this is the drawbacks in usage of solvents. IL based GPEs have been employed for energy storage devices such as batteries and super capacitors due to their interesting mechanical, physical and electrochemical properties. This study focused on synthesis preparation and characterization of an IL based GPE consisting of poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-co-HFP), zinc trifluoro metha -nesulfonate (Zn(CF3SO3)2 - ZnTF) and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (1E3MITF). Thin film samples were prepared using solvent casting method. The optimized composition was found to be 1 PVdF-co-HFP: 1 1E3MITF: 3 ZnTF (by weight basis). This mechanically stable, thin film has the maximum room temperature conductivity of 7.42×10-3 S cm-1. Conductivity variation with temperature follows Vogel - Tamman - Fulcher (VTF) behavior confirming the relation of conductivity mechanism with the free volume theory. The IL based GPE is a purely an ionic conductor having a considerable anionic contribution. It shows stability up to 2.5 V which is very much convenient from a practical point of view. Oxidation and reduction of Zn takes place at the potentials of 0.5 V and –0.5 V, respectively. In addition, Zn platting and stripping occurs only on the Zn electrodes but not on the stainless steel (SS) electrodes. Impedance measurements taken for the GPE continuously for a long period of time exhibited a satisfactory stability with Zn electrodes.https://rjs.ruh.ac.lk/index.php/rjs/article/view/238/221solvent casting methodionic conductorvtf behaviorpoly(vinylidenefluoride-co-hexafluoropropylene)1-ethyl-3-methylimid -azolium trifluoromethanesulfonate |
| spellingShingle | K.W. Prasadini K.S. Perera K.P. Vidanapathirana An ionic liquid based gel polymer electrolyte to be employed in power generating applications Ruhuna Journal of Science solvent casting method ionic conductor vtf behavior poly(vinylidenefluoride-co-hexafluoropropylene) 1-ethyl-3-methylimid -azolium trifluoromethanesulfonate |
| title | An ionic liquid based gel polymer electrolyte to be employed in power generating applications |
| title_full | An ionic liquid based gel polymer electrolyte to be employed in power generating applications |
| title_fullStr | An ionic liquid based gel polymer electrolyte to be employed in power generating applications |
| title_full_unstemmed | An ionic liquid based gel polymer electrolyte to be employed in power generating applications |
| title_short | An ionic liquid based gel polymer electrolyte to be employed in power generating applications |
| title_sort | ionic liquid based gel polymer electrolyte to be employed in power generating applications |
| topic | solvent casting method ionic conductor vtf behavior poly(vinylidenefluoride-co-hexafluoropropylene) 1-ethyl-3-methylimid -azolium trifluoromethanesulfonate |
| url | https://rjs.ruh.ac.lk/index.php/rjs/article/view/238/221 |
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