Advanced Eutectic Materials for Energy Storage: Ionic Liquids, Molten Salts, Deep Eutectic Solvents, Alloys, and Organic Cocrystals

Eutectic materials are versatile for energy storage and conversion due to their tunable composition, depressed melting temperatures, and enhanced ionic conductivity. This review surveys recent developments in eutectic materials, including ionic liquids, molten salts, deep eutectic solvents, alloy materials, and organic cocrystals. The fundamental parameters that dictate eutectic performance, including phase diagram control, component ratios, and thermal stability are analyzed, and its advantages in various aspects of application are summarized. This review concludes with some outlooks for developing energy storage using eutectic materials.