Comprehensive analysis and correlation of ionic liquid conductivity data for energy applications

Nancarrow, Paul; Al‐Othman, Amani; Mital, Dhruve Kumar; Döpking, Sandra

doi:10.1016/j.energy.2021.119761

Cited by 35 publications

(25 citation statements)

References 200 publications

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“…Due to the wide range of possible ILs, each with different chemical and physical properties, they are often described as “designer” liquids [ 3 ]. These characteristics make them potential candidates for various applications such as separation processes [ 4 ], heat transfer fluids [ 5 ], thermal energy storage [ 6 ], batteries [ 7 ], fuel cells [ 8 ], and tribology, both as lubricants [ 9 ] and lubricant additives [ 10 ], and even space technology [ 11 ]. Improvements in IL synthesis technology in recent years has also facilitated their large-scale production [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models

et al. 2021

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While several group contribution method (GCM) models have been developed in recent years for the prediction of ionic liquid (IL) properties, some challenges exist in their effective application. Firstly, the models have been developed and tested based on different datasets; therefore, direct comparison based on reported statistical measures is not reliable. Secondly, many of the existing models are limited in the range of ILs for which they can be used due to the lack of functional group parameters. In this paper, we examine two of the most diverse GCMs for the estimation of IL melting point; a key property in the selection and design of ILs for materials and energy applications. A comprehensive database consisting of over 1300 data points for 933 unique ILs, has been compiled and used to critically evaluate the two GCMs. One of the GCMs has been refined by introducing new functional groups and reparametrized to give improved performance for melting point estimation over a wider range of ILs. This work will aid in the targeted design of ILs for materials and energy applications.

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Section: Introductionmentioning

confidence: 99%

Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models

et al. 2021

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“…Ionic liquids (ILs) possess desired characteristics such as excellent ionic conductivity even at anhydrous conditions [17]. Many research efforts have been conducted on the incorporation of ILs into PEMFCs, yet, review articles pertaining to the subject are either outdated or focused only on certain types of polymers or ILs [18,19].…”

Section: Introductionmentioning

confidence: 99%

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

et al. 2022

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This work provides a comprehensive review on the incorporation of ionic liquid (ILs) into polymer blends and their utilization as proton exchanges membranes (PEM). Various conventional polymers that incorporate ILs are discussed, such as Nafion, poly (vinylidene fluoride), polybenzimidazole, sulfonated poly (ether ether ketone), and sulfonated polyimide. The methods of synthesis of IL/polymer composite membranes are summarized and the role of ionic liquids as electrolytes and structure directing agents in PEM fuel cells (PEMFCs) is presented. In addition, the obstacles that are reported to impede the development of commercial polymerized IL membranes are highlighted in this work. The paper concludes that the presence of certain ILs can increase the conductivity of the PEM, and consequently, enhance the performance of PEMFCs. Nevertheless, the leakage of ILs from composite membranes as well as the limited long-term thermal and mechanical stability are considered as the main challenges that limit the employment of IL/polymer composite membranes in PEMFCs, especially for high-temperature applications.

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“…1 This has been explored for a range of applications including supercapacitors, 2 in classic synthetic pathways and for potential for use in catalysis, 3,4 all of which require a good understanding of physical properties such as viscosity and conductivity as well as their bulk structure. [5][6][7][8][9][10][11] The liquid structure of ILs can be used to explain the variations observed in physical properties and also to provide insights into potential applications as well as to tune structures for specific applications. 12,13 Structural investigations of pure ILs utilising small-angle scattering, liquid diffraction and computational studies have found clear ordering in the bulk liquid structure with the presence of two characteristic peaks relating to the anion-cation distance and anion-cation-anion distance.…”

Section: Introductionmentioning

confidence: 99%

Small-angle neutron scattering from mixtures of long- and short-chain 3-alkyl-1-methyl imidazolium bistriflimides

Cabry

D'Andrea

Elstone

et al. 2022

Phys. Chem. Chem. Phys.

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Comprehensive analysis and correlation of ionic liquid conductivity data for energy applications

Cited by 35 publications

References 200 publications

Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models

Group Contribution Estimation of Ionic Liquid Melting Points: Critical Evaluation and Refinement of Existing Models

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

Small-angle neutron scattering from mixtures of long- and short-chain 3-alkyl-1-methyl imidazolium bistriflimides

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