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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
Abnormal viscosity increment observed for an ionic liquid by dissolving lithium chloride.
Akihiko Takada1, Kenta Imaichi, Tomoyasu Kagawa
1Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580 Japan. takada@mm.kyushu-u.ac.jp
The Journal of Physical Chemistry. B
|July 24, 2008
Summary
Adding lithium chloride (LiCl) significantly increases the viscosity of 1-n-butyl-3-methylimidazolium chloride (BmimCl). Water addition decreases BmimCl viscosity, but LiCl
Area of Science:
- Materials Science
- Physical Chemistry
- Chemical Engineering
Background:
- Ionic liquids (ILs) like 1-n-butyl-3-methylimidazolium chloride (BmimCl) possess unique properties.
- Understanding their behavior under varying conditions is crucial for applications.
- The influence of additives on IL viscosity requires detailed investigation.
Purpose of the Study:
- To investigate the effect of lithium chloride (LiCl) and water on the viscosity of BmimCl.
- To characterize the rheological behavior of BmimCl with salt and water additives.
- To determine the impact of salt concentration on IL viscosity.
Main Methods:
- Rheometry was employed to measure shear stress.
- Shear rate dependence of viscosity was analyzed.
- Zero-shear viscosity (eta(0)) was determined at varying LiCl concentrations.
Main Results:
- BmimCl exhibited shear thinning behavior, indicating structural changes at high shear rates.
- Addition of LiCl significantly enhanced the viscosity of BmimCl.
- The logarithmic zero-shear viscosity increased linearly with LiCl content, at a rate ~10x higher than in aqueous solutions.
- Water addition decreased BmimCl viscosity, but LiCl's viscosity-enhancing effect remained similar with ~5 wt% water.
Conclusions:
- LiCl is a potent viscosity enhancer for BmimCl.
- The presence of water modulates the viscosity response to LiCl addition.
- The findings provide insights into tailoring IL properties for specific applications.
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