scholarly journals Reply to “Comment on ‘Ionic Conductivity, Diffusion Coefficients and Degree of Dissociation in Lithium Electrolytes, Ionic Liquids and Hydrogel Polyelectrolytes’”

2018 ◽  
Vol 122 (48) ◽  
pp. 10968-10969 ◽  
Author(s):  
Leoncio Garrido ◽  
Inmaculada Aranaz ◽  
Alberto Gallardo ◽  
Carolina García ◽  
Nuria García ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Diffusion Coefficients ◽  
Degree Of Dissociation

Ionic Conductivity, Diffusion Coefficients, and Degree of Dissociation in Lithium Electrolytes, Ionic Liquids, and Hydrogel Polyelectrolytes

2018 ◽  
Vol 122 (34) ◽  
pp. 8301-8308 ◽  
Author(s):  
Leoncio Garrido ◽  
Inmaculada Aranaz ◽  
Alberto Gallardo ◽  
Carolina García ◽  
Nuria García ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Diffusion Coefficients ◽  
Degree Of Dissociation

scholarly journals Screening the Physical Properties of a Series of Water-in-Salt Electrolytes Using Computer Simulations

2020 ◽  
Author(s):  
Trinidad Mendez-Morales ◽  
Zhujie Li ◽  
Mathieu Salanne
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Diffusion Coefficients ◽  
Free Water ◽  
Li Ion Batteries ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
New Family ◽  
Potential Applications ◽  
Li Ion

Water-in-salts form a new family of electrolytes with properties distinct from the ones of conventional aqueous systems and ionic liquids. They are currently investigated for Li-ion batteries and supercapacitors applications, but to date most of the focus was put on the system based on the LiTFSI salt. Here we study the structure and the dynamics of a series of water-in-salts with different anions. They have a similar parent structure but they vary systematically through their symmetric/asymmetric feature and the length of the fluorocarbonated chains. The simulations allow to determine their tendency to nanosegregate, as well as their transport properties (viscosity, ionic conductivity, diffusion coefficients) and the amount of free water, providing useful data for potential applications in energy storage devices.

scholarly journals Poly(ionic liquid) Based Composite Electrolytes for Lithium Ion Batteries

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4469
Author(s):  
Robert Löwe ◽  
Thomas Hanemann ◽  
Tatiana Zinkevich ◽  
Andreas Hofmann
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Polymer Electrolyte ◽  
Diffusion Coefficients ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Resonance Spectroscopy ◽  
Electrolyte Membranes

Polymerized ionic liquids (PIL) are an interesting substance class, which is discussed to transfer the outstanding properties and tunability of ionic liquids into a solid material. In this study we extend our previous research on ammonium based PIL and discuss the influence of additives and their usability as polymer electrolyte membranes for lithium ion batteries. The polymer electrolyte is thereby used as replacement for the commercially widespread system of a separator that is soaked with liquid electrolyte. The influence of the material composition on the ionic conductivity (via electrochemical impedance spectroscopy) and the diffusion coefficients (via pulsed-field-gradient nuclear magnetic resonance spectroscopy) were studied and cell tests with adapted membrane materials were performed. High amounts of the additional ionic liquid (IL) MPPyrr-TFSI (1-methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide) increased the ionic conductivity of the materials up to 1.3·10−4 S·cm−1 but made the usage of a cross-linker necessary to obtain mechanically stable membranes. The application of liquid electrolyte mixtures with ethylene carbonate (EC) and MPPyrr-TFSI decreased ionic conductivity values down to the 10−9 S·cm−1 range, but increased 7Li diffusion coefficients with increasing amounts of EC up to 1.7·10−10 m2·s−1. Cell tests with two membrane mixtures proofed that it is possible to build electrolyte membranes on basis of the polymerized ionic liquids, but also showed that further research is necessary to ensure stable and efficient cell cycling.

ChemInform Abstract: Ionic Conductivity of Nanostructured Hybrid Materials Designed from Imidazolium Ionic Liquids and Kaolinite.

ChemInform ◽  
2009 ◽  
Vol 40 (8) ◽  
Author(s):  
Sadok Letaief ◽  
Thomas Diaco ◽  
Wendy Pell ◽  
Serge I. Gorelsky ◽  
Christian Detellier
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Hybrid Materials ◽  
Imidazolium Ionic Liquids
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