Design Principles of Organic Additives for Aqueous Zinc‐Ion Batteries

Aqueous zinc‐ion batteries (AZIBs) have garnered significant attention as next‐generation energy storage systems owing to their intrinsic safety, low cost, and environmental compatibility. However, the challenges such as dendrite growth, hydrogen evolution reaction (HER), and corrosion severely hinder their long‐term stability and commercialization. Additives engineering has emerged as a simple yet effective approach to address these challenges. Organic additives, typically composed of carbon backbones and diverse functional groups (–O–, –OH, –COO–, –NH 2 , –SO 3 –, etc.), play crucial roles in regulating Zn 2+ deposition, suppressing HER, and stabilizing the Zn/electrolyte interface. While most current additives exploit only single functional groups, the potential synergistic effects among multiple groups remain underexplored. This review systematically summarizes the characteristics, mechanisms, and performance impacts of various organic additives in AZIBs, providing comparative insights into their structure–function relationships. Finally, perspectives on future design strategies for multifunctional additives systems are proposed to guide the development of durable and high‐performance AZIBs.