scholarly journals Specifically Designed Ionic Liquids—Formulations, Physicochemical Properties, and Electrochemical Double Layer Storage Behavior

2019 ◽  
Vol 3 (2) ◽  
pp. 58
Author(s):  
Zheng Yue ◽  
Qiang Ma ◽  
Xinyi Mei ◽  
Abigail Schulz ◽  
Hamza Dunya ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
High Viscosity ◽  
Li Ion Batteries ◽  
The Past ◽  
Low Viscosity ◽  
Electrolytic Properties ◽  
Storage Behavior ◽  
Li Ion ◽  
Key Features ◽  
Electrochemical Double Layer

Two key features—non-volatility and non-flammability—make ionic liquids (ILs) very attractive for use as electrolyte solvents in advanced energy storage systems, such as supercapacitors and Li-ion batteries. Since most ILs possess high viscosity and are less prone to dissolving common electrolytic salts when compared to traditional electrolytic solvents, they must be formulated with low viscosity thinner solvents to achieve desired ionic conductivity and dissolution of electrolyte salts in excess of 0.5 M concentration. In the past few years, our research group has synthesized several specifically designed ILs (mono-cationic, di-cationic, and zwitterionic) with bis(trifluoromethylsulfonyl)imide (TFSI) and dicyanamide (DCA) as counter anions. This article describes several electrolyte formulations to achieve superior electrolytic properties. The performance of a few representative IL-based electrolytes in supercapacitor coin cells is presented.

Nitrogen–sulfur co-doped porous carbon prepared using ionic liquids as a dual heteroatom source and their application for Li-ion batteries

2018 ◽  
Vol 29 (21) ◽  
pp. 18179-18186 ◽  
Author(s):  
Mengqi Du ◽  
Yanshuang Meng ◽  
Chaoyu Duan ◽  
Chen Wang ◽  
Fuliang Zhu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Porous Carbon ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Co Doped

scholarly journals Computational Screening of the Physical Properties of Water-in-Salt Electrolytes

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

Interaction between carbon dioxide and ionic liquids: Novel electrolyte candidates for safer Li-ion batteries

2009 ◽  
Vol 189 (1) ◽  
pp. 454-457 ◽  
Author(s):  
Corrado Locati ◽  
Ugo Lafont ◽  
Cor J. Peters ◽  
Erik M. Kelder
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Li Ion Batteries ◽  
Li Ion

Are ionic liquids based on pyrrolidinium imide able to wet separators and electrodes used for Li-ion batteries?

2009 ◽  
Vol 189 (2) ◽  
pp. 1174-1178 ◽  
Author(s):  
Claudia Simona Stefan ◽  
Daniel Lemordant ◽  
Bénédicte Claude-Montigny ◽  
David Violleau
Keyword(s):  
Ionic Liquids ◽  
Li Ion Batteries ◽  
Li Ion
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