Preparation and properties of a gel polymer electrolyte system based on poly-ε-caprolactone containing 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

Sownthari, K.; Suthanthiraraj, S. Austin

doi:10.1016/j.jpcs.2014.02.003

Cited by 21 publications

(16 citation statements)

References 22 publications

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“…The value of t Zn 2þ for an optimized composition of gel polymer electrolyte system IL8 consisting of [PVC (30 wt%) / PEMA (70 wt%) : 30 wt% Zn(OTf) 2 ] + 80 wt% EMIMTFSI was found to be~0.63 and nearly the similar value of t Zn 2þ (~0.62) has already been reported by Sownthari et al [38] for a gel polymer electrolyte system based on a different polymer, poly-ε-caprolactone (PCL), obtained by immobilizing zinc triflate salt solution in an ionic liquid 1-ethyl-3-methylimidazolium bis (trifluoromethylsulfonyl)imide (EMIMTFSI).…”

Section: Transport Studies Of Zinc Ionssupporting

confidence: 82%

“…As the applied anodic voltage further increases beyond 3.23 V, the anodic current begins to increase steadily which may be ascribed to the irreversible oxidation of anions followed by the degradation of polymeric chains resulting in electrolytic decomposition [38]. Hence the potential at which there is a irreversible onset of the current during the anodic scan establishes the breakdown voltage of the gel polymer electrolyte membranes and the point of intersection of the extrapolated linear current in the high voltage region with the voltage axis gives the breakdown voltage which may be an indication of the decomposition process of the gel polymer electrolyte sample coupled with the electrodes [39].…”

Section: Electrochemical Stability Window (Ecw) Determination By Linementioning

confidence: 99%

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Effective influences of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMIMTFSI) ionic liquid on the ion transport properties of micro-porous zinc-ion conducting poly (vinyl chloride) /poly (ethyl methacrylate) blend-based polymer electrolytes

Prasanna

Suthanthiraraj

2016

J Polym Res

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A series of new gel polymer electrolytes (GPEs) based on different concentrations of a hydrophobic ionic liquid (IL) 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMIMTFSI) entrapped in an optimized typical composition of polymer blend-salt matrix [poly(vinyl chloride) (PVC) (30 wt%) / poly(ethyl methacrylate) (PEMA) (70 wt%) : 30 wt% zinc triflate Zn(CF 3 SO 3 ) 2 ] has been prepared using facile solution casting technique. The AC impedance analysis has revealed the occurrence of the maximum ionic conductivity of 1.10 × 10 −4 Scm −1 at room temperature (301 K) exhibited by the PVC/PEMA-Zn(OTf) 2 system containing 80 wt% ionic liquid. The addition of EMIMTFSI into the optimized PVC/ PEMA-Zn(OTf) 2 system in different weight percentages enhances the number of free zinc ions thereby leading to enrichment of ionic conductivity. The structural and complexation behaviour of the as prepared polymer gel electrolytes was substantiated by subjecting these electrolyte films to X-ray diffraction (XRD) and Attenuated total reflectance -Fourier transformed infrared (ATR-FTIR) investigations. The wider electrochemical stability window~3.23 V and a reasonable cationic transference number (t Zn 2+ ) of 0.63 have been attained for the polymer gel electrolyte film containing higher loading of (80 wt%) ionic liquid. The development of the amorphous phase of these gel polymer electrolyte membranes with increasing ionic liquid content was observed from scanning electron microscopic (SEM) analysis. The results of the current work divulge the assurance of developing GPEs based on ionic liquids for prospective application in zinc battery systems.

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Section: Transport Studies Of Zinc Ionssupporting

confidence: 82%

Section: Electrochemical Stability Window (Ecw) Determination By Linementioning

confidence: 99%

Effective influences of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMIMTFSI) ionic liquid on the ion transport properties of micro-porous zinc-ion conducting poly (vinyl chloride) /poly (ethyl methacrylate) blend-based polymer electrolytes

Prasanna

Suthanthiraraj

2016

J Polym Res

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“…This behaviour may be attributed to the most probable ion-pair dissociation occurring due to the waning of coulombic forces that hold these ion-pairs together, thereby providing more number of ions for ionic conduction at elevated temperatures [21]. The fact that all the observed Arrhenius plots (Fig.…”

Section: Resultsmentioning

confidence: 93%

“…3 that as the salt concentration increases from 2.5 to 12.5 wt%, ionic conductivity increases in a steady fashion. However, the highest ionic conductivity value of 6.9 × 10 −4 S cm −1 exhibited by the typical composition designated as PZ5 may be attributed to the most favourable segmental motion of the polymer chain involving mobile Zn 2+ ions provided by the doping of Zn(CF 3 SO 3 ) 2 salt in these compositions wherein the optimized concentration of the salt may correspond to 12.5 wt% loading into the (PEO:PPG) host matrix [21,22,34]. On the other hand, when the amount of zinc triflate is increased from 12.5 to 15 wt%, the value of measured ionic conductivity decreases.…”

Section: Resultsmentioning

confidence: 99%

“…Interestingly, PEO has a high solvating capacity for alkali metal salts and effortlessly forms flexible films. Recently, zinc ion conducting electrolytes have received an increased attention due to their distinct advantages over their lithium equivalence such as non-toxicity, natural abundance, low cost and high specific and volumetric energy density values [20,21] apart from low power applications [22]. A careful analysis of relevant scientific research has confirmed that no comprehensive analysis or characterization pertaining to the impact of zinc triflate, Zn(CF 3 SO 3 ) 2 , incorporation into the PEO:PPG blend polymer electrolyte system has been carried out so far.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of a new PEO-PPG blend polymer electrolyte system

Nancy

Suthanthiraraj

2016

Ionics

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This paper reports on preparation and characterization of thin films of a new zinc ion conducting blended polymer electrolyte system containing polyethylene oxide [PEO] and polypropylene glycol [PPG] complexed with zinc triflate [Zn(CF 3 SO 3 ) 2 ] salt. The room temperature ionic conductivity (σ 298K ) data of such PEO-PPG polymer blends prepared by solution casting technique were found to be of the order of 10 −5 S cm −1 , whereas the optimized composition containing 90:10 wt% ratio of PEO and PPG possessed an appreciably high ionic conductivity of 7.5 × 10 −5 S cm −1 . Subsequently, six different weight percentages of zinc triflate viz., 2.5, 5, 7.5, 10, 12.5 and 15, respectively, were added into the above polymer blend and resulting polymer-salt complexes were characterized by means of various analytical tools. Interestingly, the best conducting specimen namely 87.5 wt% (PEO:PPG)-12.5 wt% Zn(CF 3 SO 3 ) 2 exhibited an enhanced room temperature ionic conductivity of 6.9 × 10 −4 S cm −1 with an activation energy of 0.6 eV for ionic conduction. The present XRD results have indicated the occurrence of characteristic PEO peaks and effects of salt concentration on the observed intensity of these diffraction peaks. Appropriate values of degree of crystallinity for different samples were derived from both XRD and DSC analyses, while an examination of surface morphology of the blended polymer electrolyte system has revealed the formation of homogenous spherulites involving a rough surface and relevant zinc ionic transport number was found to be 0.59 at room temperature for the best conducting polymer electrolyte system thus developed.

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Stability Enhancement of Zinc‐Ion Batteries Using Non‐Aqueous Electrolytes

Kao-ian

Mohamad

Liu

et al. 2022

Batteries & Supercaps

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Owing to their high energy density and low cost, zinc‐ion batteries (ZIBs) are gaining much in popularity. However, in practice, issues with hydrogen evolution, zinc dendrite development, corrosion, and passivation persist. Such drawbacks prove difficult to eradicate completely. To address these difficulties, many techniques have been proposed including inhibitor addition, artificial SEI, and Zn electrode modification. As a result, some researchers believe that using non‐proton donor electrolytes or nonaqueous electrolytes can fundamentally solve these problems. Herein, the efforts to apply nonaqueous electrolytes such as organic electrolytes, room‐temperature ionic liquids, and deep‐eutectic solvents to ZIBs are described. An understanding of the mechanisms of nonaqueous ZIBs (NZIBs) regarding zinc plating/stripping and intercalation/deintercalation is also highlighted. Importantly, research gaps are identified in order to pave the way for future study. In addition, an attempt is made to offer a viewpoint on critical topics as well as a benchmarking and enhancement of NZIB technologies.

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Preparation and properties of a gel polymer electrolyte system based on poly-ε-caprolactone containing 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

Cited by 21 publications

References 22 publications

Effective influences of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMIMTFSI) ionic liquid on the ion transport properties of micro-porous zinc-ion conducting poly (vinyl chloride) /poly (ethyl methacrylate) blend-based polymer electrolytes

Effective influences of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide (EMIMTFSI) ionic liquid on the ion transport properties of micro-porous zinc-ion conducting poly (vinyl chloride) /poly (ethyl methacrylate) blend-based polymer electrolytes

Preparation and characterization of a new PEO-PPG blend polymer electrolyte system

Stability Enhancement of Zinc‐Ion Batteries Using Non‐Aqueous Electrolytes

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