Suppressed Water Reactivity by Zincophilic‐Hydrophobic Electrolyte Additive for Superior Aqueous Zn Metal Batteries

Abstract As one of the most promising anodes of aqueous batteries, Zn metal faces uncontrollable side reactions and deleterious dendrite growth, which drastically compromise its cycle life and Coulombic efficiency (CE). To tackle these issues, a versatile electrolyte additive is reported that can regulate the solvation structure, adsorb on the Zn surface, and in situ generate a novel zincophilic‐microhydrophobic interphase to isolate the anode from the reactive water molecules. Benefiting from its triple effects on the water reactivity modulation, the Zn metal anode exhibits excellent reversibility with an ultra‐high average CE value of 99.92% at 5 mA cm −2 in the ZnSO 4 electrolyte system, and the Zn||Zn…

• NN
  National Natural Science Foundation of China

  Award: 22075028
• CP
  China Postdoctoral Science Foundation

  Award: 2022M710365