Recent Research Progress into Zinc Ion Battery Solid‐Electrolyte Interfaces

Abstract Aqueous zinc ion batteries (ZIBs) are prospective next‐generation energy storage device candidates owing to resource abundance, affordability, eco‐friendliness, and safety. The solid‐electrolyte interface (SEI) produced in a ZIB by electrolyte/electrode interactions significantly impacts battery performance. The SEI is known to promote dendrite growth, determine the electrochemical stability window, passivate zinc‐metal‐anodic corrosion, and mutate the electrolyte. Accordingly, the SEI is closely related to the overall property of a ZIB device. This review provides an overview of the impact of SEIs on ZIB performance recently and provides an SEI design strategy based on the formation mechanism, type, and characteristics of the SEI. Finally, future investigational directions for SEIs in ZIBs are expected to lead to a deep understanding of the SEI, enhance ZIB performance, and facilitate their extensive implementation.