Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 12, 2024
Abstract Zn dendrite growth and parasitic reactions at the interface of zinc anode/electrolyte in aqueous batteries severely hinder its lifespan application. Herein, anode is effectively stabilized by introducing trace amounts 4‐aminobutane‐1‐phosphate (ABPA) into ZnSO 4 electrolyte. The ABPA adsorbs onto surface then further decomposes to a high conductive organic/inorganic composite situ SEI layer including amino, partial carbon chain, phosphate. In layer, residual undecomposed chain promotes desolvation 2+ , amino induces uniform plating phosphate facilitates migration . Thus, this not only suppresses water‐related side but also enhances transport kinetics. As result, Zn||Zn symmetric cell delivers an ultralong cycle life over 13 000 cycles 50 mA cm −2 1 mAh A average Coulombic efficiency 99.72% achieved 1000 Zn||Cu half‐cell. Zn||I 2 full high‐capacity retention 91.42% after 40,000 cycles. Moreover, 49 pouch maintains 80.28% capacity 300 61.22%
Language: Английский