Trialkylsulfonium and tetraalkylammonium cations-based ionic liquid electrolytes for quasi-solid-state dye-sensitized solar cells

Lee, Chuan‐Pei; Peng, Jia-De; Velayutham, D.; Chang, Jeffrey; Chen, Ping-Wei; Suryanarayanan, V.; Ho, Kuo–Chuan

doi:10.1016/j.electacta.2013.09.087

Cited by 35 publications

(39 citation statements)

References 29 publications

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“…Sulfonium ion-based ILs mostly had higher conductivity than ammonium ion-based ILs due to their lower viscosity. DSSCs employing IL with asymmetric diethylalkylsulfonium cation, [Et 2 (n-C 4 H 9 )S] + , showed efficiency of 4.61% while DSSC using IL based on quaternary ammonium-based cations, [Et 3 (n-C 8 H 17 )N] + , showed 3.95% efficiency [15]. This is due to the high charge-transfer conductivity.…”

Section: Progress and Developments In Ionic Liquidsmentioning

confidence: 65%

“…However, the high viscosity of pure imidazolium iodide IL can obstruct diffusion of the I − and I 3 − ions of the mediator, thus limiting solar cell performance [15]. Also, if the I − concentration is large, the dye molecules that have been excited (D*) can be reduced by the iodide ions, forming reduced dye molecules (D − ) and iodine radicals I…”

Section: Ils In Dye-sensitized Photovoltaic Systemsmentioning

confidence: 99%

“…Imidazolium iodide ILs have been used widely as a solvent in electrolytes containing I − /I 3 − redox mediator for the fabrication of DSSCs [11][12][13][14][15]. However, the high viscosity of pure imidazolium iodide IL can obstruct diffusion of the I − and I 3 − ions of the mediator, thus limiting solar cell performance [15].…”

Section: Ils In Dye-sensitized Photovoltaic Systemsmentioning

confidence: 99%

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Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Yusuf¹,

Yahya²,

Arof³

2017

Progress and Developments in Ionic Liquids

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Ionic liquids (ILs) are molten salts at ambient temperature and consist of poorly coordinating cations and anions. They have good electrical conductivity with a wide voltage window and high thermal stability, but negligible vapor pressure. ILs can enhance ionic conductivity when added to polymer electrolytes. Conductivity enhancement is due to the additional ions supplied by the IL, the plasticizing nature of the IL and the low viscosity that facilitates ion mobility. The plasticizing nature of ILs softens the polymer chain giving rise to easier polymer segmental motion. Increase in polymer segmental motion implies that IL can increase amorphousness of a polymer electrolyte (PE). This article discusses the involvement of ionic liquid as electrolytes in selected devices, namely dye sensitized photovoltaics, batteries, fuel cells and supercapacitors.

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Section: Progress and Developments In Ionic Liquidsmentioning

confidence: 65%

Section: Ils In Dye-sensitized Photovoltaic Systemsmentioning

confidence: 99%

Section: Ils In Dye-sensitized Photovoltaic Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Yusuf¹,

Yahya²,

Arof³

2017

Progress and Developments in Ionic Liquids

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“…The N 2224 TFSI had been prepared, as per the procedure, reported in our earlier publication [18]. The halide impurity was determined using 5 % AgNO 3 , and the purity was checked with a 400-MHz Bruker 1 H NMR spectrometer with CDCl 3 as solvent and TMS as internal reference.…”

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…Investigations on acyclic quaternary ammonium cation-based RTILs are scanty than cyclic cation in the field of the LIB application. Recently, we have reported the preparation and characterization of asymmetric tetraalkylammonium cation-based ILs ([Et 3 R 1 N] + , wherein R 1 = n-C 4 H 9 , n-C 6 H 13 , n-C 8 H 17 , corresponding to N + 2224 , N + 2226 and N + 2228 , respectively [18]. The cation symmetry and alkyl chain length also determine the properties of ionic liquid.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric tetraalkyl ammonium cation-based ionic liquid as an electrolyte for lithium-ion battery applications

Selvamani

Suryanarayanan

Velayutham

et al. 2016

J Solid State Electrochem

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Performance of N-butyl N,N,N-triethylammonium bis(trifluoromethanesulfonyl)-imide (N 2224 TFSI) as a room temperature ionic liquid (RTIL) containing ethylene carbonate (EC)/diethylcarbonate (DEC) and lithium salt has been investigated as an electrolyte for lithium-ion battery. The electrolyte is highly resistant to fire during direct exposure to the flame, indicating its non-flammable nature. The overall electrochemical window of the ionic liquid (IL) electrolyte is up to 5.7 V vs. Li metal without any solvent decomposition, as confirmed by linear sweep voltammetry (LSV). The electrolyte has low viscosity (32.9 cPs) and high conductivity (5.23 mS cm −1 ) with effective SEI film-forming ability. The performance of the IL electrolyte has been tested with lithium-ion half cells using LiFePO 4 and mesocarbon microbead (MCMB) electrodes, showing good galvanostatic cycling with high capacity retention of about 84 and 90 %, respectively.

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Acyclic and Cyclic Alkyl and Ether‐Functionalised Sulfonium Ionic Liquids Based on the [TFSI]⁻ and [FSI]⁻ Anions as Potential Electrolytes for Electrochemical Applications

et al. 2018

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This work provides a study based on acyclic and cyclic sulfonium ionic liquids (ILs) with alkyl and ether-functionality on the cation paired with the bis{(trifluoromethyl)sulfonyl}imide, [TFSI] À , or the bis(fluorosulfonyl)imide, [FSI] À , as the counter anion. Herein, thermophysical characterisation of nine sulfonium-based ILs concerning the density, viscosity and conductiv-ity and thermal properties including phase transition behaviour and decomposition temperature is reported. The electrochemical stability of the ILs was also measured by cyclic voltammetry at a glassy carbon macro-disk electrode. All of the ILs showed low melting point, low viscosity and good conductivity and could serve as potential electrolytes for energy storage devices.[a] S.

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Trialkylsulfonium and tetraalkylammonium cations-based ionic liquid electrolytes for quasi-solid-state dye-sensitized solar cells

Cited by 35 publications

References 29 publications

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Asymmetric tetraalkyl ammonium cation-based ionic liquid as an electrolyte for lithium-ion battery applications

Acyclic and Cyclic Alkyl and Ether‐Functionalised Sulfonium Ionic Liquids Based on the [TFSI]⁻ and [FSI]⁻ Anions as Potential Electrolytes for Electrochemical Applications

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Trialkylsulfonium and tetraalkylammonium cations-based ionic liquid electrolytes for quasi-solid-state dye-sensitized solar cells

Cited by 35 publications

References 29 publications

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Ionic Liquid Enhancement of Polymer Electrolyte Conductivity and their Effects on the Performance of Electrochemical Devices

Asymmetric tetraalkyl ammonium cation-based ionic liquid as an electrolyte for lithium-ion battery applications

Acyclic and Cyclic Alkyl and Ether‐Functionalised Sulfonium Ionic Liquids Based on the [TFSI]− and [FSI]− Anions as Potential Electrolytes for Electrochemical Applications

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Acyclic and Cyclic Alkyl and Ether‐Functionalised Sulfonium Ionic Liquids Based on the [TFSI]⁻ and [FSI]⁻ Anions as Potential Electrolytes for Electrochemical Applications