Unlocking the potential: Innovations and strategies for electrolyte optimization in Zn-ion batteries

Zn-ion batteries have emerged as promising energy storage devices due to their high energy density, low cost, and environmental friendliness. To fully exploit their potential, it is essential to enhance their performance through innovative strategies for electrolyte optimization. This article presents a comprehensive review of recent advancements and approaches aimed at improving the performance of Zn-ion batteries by optimizing the electrolyte. The review discusses the importance of electrolyte composition and its impact on ionic conductivity, stability, and safety. It explores various electrolyte components, such as solvents, salts, and additives, and highlights their influence on ion transport and the prevention of side reactions. Additionally, the challenges posed by the aqueous electrolyte system are addressed, with corresponding countermeasures suggested. Strategies for achieving high ionic conductivity and stability are discussed, including the use of novel solvents, salt combinations, and additives with improved properties. Furthermore, this article underscores the significance of advanced characterization and modeling in understanding electrolyte-electrode interactions and guiding electrolyte optimization efforts. In conclusion, emerging trends and future directions in electrolyte optimization for Zn-ion batteries are outlined, providing a roadmap for future research and development in this field.