Ionic conductivity improvement in poly (propylene) carbonate-based gel polymer electrolytes using 1-butyl-3-methylimidazolium iodide (BmimI) ionic liquid for dye-sensitized solar cell application

Farhana, Nur; Khanmirzaei, M. H.; Omar, Fatin Saiha; Ramesh, S.; Ramesh, K.

doi:10.1007/s11581-017-1979-z

Cited by 15 publications

(5 citation statements)

References 21 publications

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“…As seen in both Figure 10a,b, there is an increment in overall solar cell efficiency for binary IL‐based GPE system compared to a single IL‐based GPE system. The ionic conductivity of single/binary IL‐based GPE has a clear correlation with J sc and the overall power efficiency of DSSCs 28 . From the comparison of the single IL system and binary IL system, we see the increment from 2.78% reaching to maximum efficiency of 7.61% and 7.80% for system 1 (EMIM‐4) and system 2 (BMIM‐3), respectively.…”

Section: Resultsmentioning

confidence: 83%

“…The Arrhenius model is the relationship between ionic conductivity, activation energy, and temperature. It is stated in the following Equation () 28 :

σ = σ_{0} e^{(- \frac{E_{a}}{K_{normalb} T})}

where

σ

is ionic conductivity,

σ_{o}

pre‐exponential constant, E a is the activation energy (eV), K b is Boltzmann constant, and T is the absolute temperature (K). The activation energy can be obtained by using the slope of the graph 10 .…”

Section: Resultsmentioning

confidence: 99%

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Highly efficient dye‐sensitized solar cells: A comparative study with two different system of solvent‐free binary room‐temperature ionic liquid‐based electrolytes

Syawal

Farhana

Goh

et al. 2021

J of Applied Polymer Sci

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In this work, novel redox electrolytes based on poly (ethylene oxide) (PEO) were prepared using binary ionic liquid 1‐methyl‐3‐propylimidazolium iodide (MPII) with 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIMTFSI) or 1‐butyl‐3‐methylimidazolium tetrafluoroborate (BMIMBF4) to reduce the high viscosity of MPII. The addition of low viscosity ionic liquids is to overcome the low mass transportation of redox mediator faced by the single ionic liquid. Therefore, different ratios of ionic liquids were added, and their effect on the electrical properties of the ionic liquid‐based gel polymer electrolytes (GPE) was observed. It was confirmed that all the system dominant by ions rather than electron. The binary ionic liquid system containing 37.5 wt.% of BMIMBF4 showed the highest ionic conductivity of 24.2 mS cm−1. Fourier‐transform infrared and X‐ray diffraction studies confirmed that complexation occurred between all materials. The combination of two alkyl side chain length has enhanced the efficiency of the DSSC with short‐circuit current density (JSC) of 26.81 mA cm−1, open‐circuit voltage (VOC) of 0.67 V, fill factor of 44.5% and photovoltaic conversion efficiency (η) of 7.8%. This work has provided valuable insight for further stability of binary ionic liquid‐based GPE compared to single ionic liquid electrolytes.

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Section: Resultsmentioning

confidence: 83%

“…The Arrhenius model is the relationship between ionic conductivity, activation energy, and temperature. It is stated in the following Equation () 28 :

σ = σ_{0} e^{(- \frac{E_{a}}{K_{normalb} T})}

where

σ

is ionic conductivity,

σ_{o}

Section: Resultsmentioning

confidence: 99%

Highly efficient dye‐sensitized solar cells: A comparative study with two different system of solvent‐free binary room‐temperature ionic liquid‐based electrolytes

Syawal

Farhana

Goh

et al. 2021

J of Applied Polymer Sci

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“…As the substrate used in the XRD test is SiO 2 , the diffraction peak at 2θ = 10 • -30 • is attributed to amorphous SiO 2 . In the XRD result before Soxhlet extraction, the diffraction peaks at 13 • and 26 • belong to BmimI crystal [37]. There is no diffraction peak of Au 0 in the sample after leaching, indicating that Au 0 has all been oxidized to gold ions and loaded in the ionic liquid phase.…”

Section: Extraction Gold From Spent Catalystmentioning

confidence: 98%

Study of an Environmentally Friendly Method for the Dissolution of Precious Metal with Ionic Liquid and Iodoalkane

Feng

Liu

Zhao

et al. 2021

Metals

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Gold as a precious metal resource has high recycling significance. However, the current extraction methods cannot achieve the both efficiency and environmental friendliness. In this paper, we propose a new gold leaching agent, which can leach gold under light condition by mixing iodoform (CHI3) with 1-butyl-3-methylimidazolium dicyanamide (BmimN(CN)2) ionic liquid. Under 25 °C and 13 W incandescent lamp irradiation, the leaching yield of gold can achieve 100 wt%, and the average leaching rate is 945 mg Au/(h·mol·CHI3) (18.9 times of that of the cyanidation method). Through the analysis of the results of radical inhibition experiment, UV-Vis and XPS, a possible leaching mechanism is proposed: the iodine radical generated by light oxidizes Au0 to Au+, and then forms AuN(CN)2 by coordinating with N(CN)2−. Subsequently, the ionic liquid and Au N(CN)2 form a stable [Bmim]·[Au(N(CN)2)2] ion pair structure, further promoting the dissolution reaction. The leaching yield of gold can reach 81.9 wt% and 100 wt%, respectively, when applied to ore and waste electrical and electronic equipment (WEEE); the leaching yield of gold can also reach 100 wt% when applied to a waste catalyst by adding a Soxhlet extraction. The results show that this method is not only efficient, mild, and environmentally friendly, but also has strong adaptability and wide application prospects.

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“…When the current space missions are targeting the ocean worlds where an icy shell covers the surface of the planets (e.g., Europa, Enceladus, and Titan), − the development of an electrolyte that can adapt to the extreme temperature conditions rises up to a necessity and a priority. Electrolytes that consist of [BMIM][I] have been widely studied, , but their behaviors and limits of performance at low temperatures are still unrevealed. Nickerson et al reported that the addition of water will reduce the viscosity of [BMIM][I] in the binary mixture with the focus on their properties at room temperature .…”

Section: Introductionmentioning

confidence: 99%

A Dual Ionic Liquid-Based Low-Temperature Electrolyte System

Lin

Gliege

et al. 2018

J. Phys. Chem. B

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Ionic liquids (ILs) show a promising future as electrolytes in electrochemical devices. In particular, IL-based electrolytes bring operations at extreme temperatures to realization that conventional electrolytes fail to accomplish. Although IL electrolytes demonstrate considerable progress in high-temperature applications, their breakthroughs in devices operating at low temperatures are still very limited due to undesirable phase transitions and unsatisfying transport properties. In this study, we present an approach where, by tuning molecular interactions in the system, the designed electrolyte of an IL-based mixture can reach a lower operating temperature with improved transport properties. We have discovered that the incorporation of the IL, ethylammonium nitrate ([EA][N]), can contribute to reforming the molecular interactions within the system, which effectively resolve the crystallization accompanied with the excess of water and retain a low glass transition temperature. The reported liquid electrolyte systems based on a mixture of 1-butyl-3-methylimidazolium iodide ([BMIM][I]), [EA][N], water, and lithium iodide exhibit a glass transition temperature below −105 °C. Furthermore, the optimized electrolyte system shows significant viscosity reduction and ionic conductivity enhancement from 25 to −75 °C. The influence is also noticeable on the increased ionicity, which made the developed electrolyte comparable with other good ILs under the Walden rule. The electrochemical stability of the electrolyte system is revealed by a steady and reproducible profile of iodide/triiodide redox reactions at room temperature over a proper potential window via cyclic voltammetry. The results from this work not only provide a potential solution to applications of the iodide/triiodide redox couple-based electrochemical devices at low temperatures but also show a practical approach to obtain tailored properties of a mixture system via modifying molecular interactions.

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Ionic conductivity improvement in poly (propylene) carbonate-based gel polymer electrolytes using 1-butyl-3-methylimidazolium iodide (BmimI) ionic liquid for dye-sensitized solar cell application

Cited by 15 publications

References 21 publications

Highly efficient dye‐sensitized solar cells: A comparative study with two different system of solvent‐free binary room‐temperature ionic liquid‐based electrolytes

Highly efficient dye‐sensitized solar cells: A comparative study with two different system of solvent‐free binary room‐temperature ionic liquid‐based electrolytes

Study of an Environmentally Friendly Method for the Dissolution of Precious Metal with Ionic Liquid and Iodoalkane

A Dual Ionic Liquid-Based Low-Temperature Electrolyte System

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