Ionic liquid-nanoparticle based hybrid systems for energy conversion and energy storage applications

Background Exceptional physicochemical properties of ionic liquids (ILs) enable these molten salts to be called as designer solvents. ILs thus have been used for a number of applications ranging from lubricants to heat transfer fluids. Due to the synergistic properties, IL and nanoparticles (NPs) hybrid system called ionano-fluid (INF) have shown promising thermophysical properties for heat storage and/or transfer. Methods In this review, we highlighted the recent advances in the field of INFs systems and their energy related applications. INFs synthesized using types of NPs and their thermophysical properties are also dis-cussed. In addition, mathematical modeling for thermal conductivity and viscosity is also highlighted. Significant findings The suitable choice of IL and NPs forming INF are shown to be promising factor for heat transfer or storage applications as evident from temperature dependent physicochemical properties. To avoid performing large number of experiments, the mathematical modeling can be used for determining the efficient heat transfer fluids. The challenges and opportunities for using INFs as heat transfer fluid are also highlighted.(c) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Automated summary

This review highlights the recent advances and applications of ionano-fluids (INFs), which are formed by mixing ionic liquids (ILs) and nanoparticles (NPs), in the field of heat storage and transfer. By carefully selecting ILs and NPs, the heat transfer and storage efficiency can be improved.