Research Progress and Prospects of Low‐Temperature Zinc‐Ion Batteries

Developing high‐safety, low‐cost, and eco‐friendly energy storage systems is crucial for renewable energy utilization. Zinc‐ion batteries (ZIBs) are promising alternatives to lithium‐ion batteries due to abundant zinc resources, low cost, high volumetric capacity, and high ionic conductivity of aqueous electrolytes. However, the relatively high freezing point of water causes issues such as electrolyte freezing, reduced ion transport efficiency, and sluggish reaction kinetics at low temperatures, limiting their application. To address these challenges, strategies including electrolyte optimization, interface engineering, and gel/solid electrolyte development have been proposed. These approaches adjust solvation structures, inhibit hydrogen bond networks, and enhance ion transport and interfacial stability, significantly improving energy density, power density, and cycle life of ZIBs under low temperatures. While performance has been enhanced, a systematic review of recent advances, challenges, and prospects for low‐temperature ZIBs is still lacking. This review fills the gap by integrating failure mechanisms, electrolyte design strategies, and performance evaluations across major electrolyte types. It highlights emerging concepts such as quasihigh entropy interfaces and multitentacle electrolyte design, offering a forward‐looking perspective to achieve practical wide‐temperature ZIBs, thereby supporting their application under extreme conditions.