Related Experiment Video
Updated: Jan 8, 2026
Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
Temperature Dependence of the Inverse Haven Ratio in Ionic Liquids and "Solvent-in-Salt" Systems
Airat Khamzin1, Dmitriy Kushnir1, Alexander Nikitin2
1Institute of Physics, Kazan Federal University, Kazan, Tatarstan 420008, Russia.
Abstract:
This article proposes a model of the temperature behavior of the inverse Haven ratio (ionicity) in concentrated electrolytes, based on the mechanism of capture of mobile ions into deep localized states (traps). Within the framework of the model, an analytical expression for the temperature dependence of the ionicity is obtained, which is in good agreement with experimental data for some room-temperature ionic liquids. A generalization of the model to systems with spatial heterogeneity is also proposed, which allows one to describe the nonmonotonic temperature behavior of the inverse Haven ratio in highly concentrated salt solutions ("solvent-in-salt" systems).
Related Concept Videos
02:42Aqueous Solutions and Heats of Hydration
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
03:08Electrolytes: van't Hoff Factor
The colligative properties of a solution depend only on the number, not on the identity, of solute species dissolved. The concentration terms in the equations for various colligative properties (freezing point depression, boiling point elevation, osmotic pressure) pertain to all solute species present in the solution. Nonelectrolytes dissolve physically without dissociation or any other accompanying process. Each molecule that dissolves yields one...
01:19Ionic Strength: Effects on Chemical Equilibria
In this solution, the primary...
02:05Entropy and Solvation
02:39Enthalpy of Solution
03:00Solubility
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...