Perfluoro anion based binary and ternary ionic liquids as electrolytes for dye-sensitized solar cells

Lin, Hsi-Hsin; Peng, Jia-De; Suryanarayanan, V.; Velayutham, D.; Ho, Kuo‐Chuan

doi:10.1016/j.jpowsour.2016.02.029

Cited by 24 publications

(12 citation statements)

References 34 publications

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“…Ionic liquids (ILs) are interesting working fluids in different fields of chemistry and engineering such as electrolysis [1,2], catalysis [3,4], or separation technology [5,6]. Often, ILs consist of an inorganic anion and an organic cation with at least one alkyl chain of varying length attached to the charged head group of the cation [7].…”

Section: Introductionmentioning

confidence: 99%

Surface Tension and Viscosity of Binary Mixtures of the Fluorinated and Non-fluorinated Ionic Liquids [PFBMIm][PF6] and [C4C1Im][PF6] by the Pendant Drop Method and Surface Light Scattering

et al. 2020

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Mixtures of fluorinated and non-fluorinated ionic liquids (ILs) show a distinct structural organization in the bulk and at the surface. To understand how such microscopic effects influence the macroscopic bulk and surface properties of IL mixtures, knowledge of corresponding thermophysical properties including viscosity and surface tension is required yet lacking. With the intention of investigating surface enrichment effects of the fluorinated IL [PFBMIm][PF 6 ] (3-methyl-1-(3,3,4,4,4pentafluorobutyl)imidazolium hexafluorophosphate) in mixtures with the structurally similar, non-fluorinated IL [C 4 C 1 Im][PF 6 ] (1-butyl-3-methylimidazolium hexafluorophosphate) observed with angle-resolved X-ray photoelectron spectroscopy (ARXPS), the pendant drop method and surface light scattering (SLS) were applied in the present study to determine surface tension and dynamic viscosity between (293 and 368) K. By adding small amounts of [PFBMIm][PF 6 ] up to 9 mol %, a distinct increase in the viscosity and decrease in the surface tension of the mixtures relative to the properties of pure [C 4 C 1 Im][PF 6 ] was found. This behavior reflects the nanosegregated structure in the bulk and at the surface of the binary IL mixtures. Using the results about the pronounced surface enrichment of the fluorinated chain of [PFBMIm][PF 6 ] quantified by ARXPS, a linear mixing rule for the surface tension of the IL mixtures based on the surface tensions of the pure ILs and the surface concentration of their most surface-active groups is suggested.

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Section: Introductionmentioning

confidence: 99%

Surface Tension and Viscosity of Binary Mixtures of the Fluorinated and Non-fluorinated Ionic Liquids [PFBMIm][PF6] and [C4C1Im][PF6] by the Pendant Drop Method and Surface Light Scattering

et al. 2020

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“…Hence, to reduce I-ion concentration and viscosity of the electrolyte, binary or double ILs were used in electrolyte preparation [17][18][19][20] and this can avoid efficiency loss.…”

Section: Progress and Developments In Ionic Liquidsmentioning

confidence: 99%

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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“…Liquid electrolytes also cause significant degradation of dye sensitizers at elevated temperatures Nguyen et al (2009Nguyen et al ( , 2010. Therefore, to overcome these drawbacks new types of solvents, such as ionic liquids (ILs) Lin et al (2016); Decoppet et al (2017); Cao et al (2008); Bidikoudi et al (2014); Li et al (2015), polymers Singh et al (2009), siloxane Lee et al (2013), and deep eutectic solvents (DESs) Denizalti et al (2018); Jhong et al (2009) have been evaluated and applied in DSC fabrication. Among these solvents, DESs stand out as a potential candidate for their availability, inexpensive production and high sustainability, which can allow for large-scale application of this generation of solar cells.…”

Section: Introductionmentioning

confidence: 99%

Dye-sensitized solar cells using deep eutectic solvents mixed with ethanol as an effective electrolyte medium

Nguyen

Tran

2018

Sci. Tech. Dev. J.

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This research aims to develop a new type of electrolyte for dye-sensitized solar cells (DSCs) which can be produced in cost-effective and large scale. DSCs using deep eutectic solvents (DESs) mixed with ethanol (50% w/w DES content), as an electrolyte medium, was studied herein for the first time. Ten types of DESs were synthesized and three among them were potential candidates for DSC electrolytes. Compared to toxic and volatile organic solvents, this mixed solvent is more eco-friendly and inexpensive. According to J-V curve measurements, DSCs that used DES-ethanol medium showed promising photovoltaic performance.

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Perfluoro anion based binary and ternary ionic liquids as electrolytes for dye-sensitized solar cells

Cited by 24 publications

References 34 publications

Surface Tension and Viscosity of Binary Mixtures of the Fluorinated and Non-fluorinated Ionic Liquids [PFBMIm][PF6] and [C4C1Im][PF6] by the Pendant Drop Method and Surface Light Scattering

Surface Tension and Viscosity of Binary Mixtures of the Fluorinated and Non-fluorinated Ionic Liquids [PFBMIm][PF6] and [C4C1Im][PF6] by the Pendant Drop Method and Surface Light Scattering

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

Dye-sensitized solar cells using deep eutectic solvents mixed with ethanol as an effective electrolyte medium

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