Solvation Engineering via Cation‐Polyanion Synergy for Ultra‐Stable Seawater Zinc Batteries

ABSTRACT Seawater‐based zinc‐ion batteries (ZIBs), in terms of integration with high safety, environmental friendliness, and low cost, have been regarded as one of the most promising next‐generation large‐scale electrochemical storage systems. However, the complex ionic environment of seawater‐based electrolytes, which leads to chloride pitting corrosion, zinc (Zn) dendrite growth, and hydrogen evolution reactions (HER), impedes their practical applications. Herein, we design a multi‐functional