Advancements in Gel Electrolytes for High-Performance Zinc–Air Batteries to Stabilize Zinc Anodes

As renewable energy advances, the demand for improved battery solutions becomes increasingly urgent. Zinc–air batteries have emerged as leading contenders, offering remarkable energy density coupled with cost efficiency. However, challenges such as dendritic growth, corrosion, and the accumulation of byproducts within the zinc anode hinder their optimal performance and longevity. Functional gel electrolytes have garnered significant attention, as they not only address current issues with the Zn anode but also mitigate the risk of electrolyte leakage and enhance adaptability in batteries. This Review begins by outlining the design of functional gel electrolytes tailored to adeptly curb zinc anode dendrite formation and corrosion. Additionally, it explores the advantages and disadvantages of different types of gel electrolytes for stabilizing the Zn anode, along with prospects for designing novel gel electrolytes. Consequently, this sets a solid groundwork for the continual evolution of battery technology.