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Updated: Jan 10, 2026
11:04
Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
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Solubility Challenges in Battery Electrolytes
David Reber1, Zhiyu Wang2, Kiana Amini3
1Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland.
Chemical Reviews
|November 24, 2025
Summary
This review explores solubility challenges in battery electrolyte development, focusing on strategies to enhance solubility for redox flow and metal-ion batteries. Understanding solubility is key for advancing battery performance and design.
Area of Science:
- Electrochemistry
- Materials Science
- Chemical Engineering
Background:
- Battery electrolyte development faces challenges in optimizing solubility for improved performance.
- Solubility is a critical factor influencing the efficiency and longevity of electrochemical energy storage systems.
Purpose of the Study:
- To provide a foundational understanding of solubility for researchers in battery electrolyte development.
- To survey recent strategies for controlling and maximizing solubility in electrochemical systems, particularly for redox flow and metal-ion batteries.
Main Methods:
- Reviewing fundamental solubility concepts and methods for accurate determination and prediction.
- Analyzing strategies for tuning solubility via electrolyte solution structure and active material molecular structure.
- Examining methods to decouple electrolyte capacity from solubility in flow batteries.
Main Results:
- Solubility can be effectively tuned by modifying electrolyte and active material structures.
- Concentrated electrolytes and solvation structures significantly influence bulk and interfacial properties in metal and metal-ion batteries.
- High-concentration formulations present trade-offs, including increased viscosity and reduced ionic conductivity.
Conclusions:
- Solubility is a central design parameter for advanced battery electrolytes.
- Further research is needed to balance high solubility with other critical performance metrics for practical battery deployment.
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