Regulating Interface Chemistry to Construct a Stable Solid Electrolyte Interphase for Long‐Life Zinc Metal Anodes

Abstract The formation of a stable solid electrolyte interphase (SEI) is essential for achieving long‐life zinc metal anodes in aqueous batteries. In this study, a highly robust SEI is constructed through precise interface chemistry regulation. By employing an external physical field, a novel reaction pathway is triggered, enabling the in situ formation of a uniform and stable interfacial layer. Unlike conventional electrode–electrolyte interactions, this approach utilizes ultrasonic energy to activate unique electrochemical processes that facilitate the rapid construction of a hybrid SEI structure. This engineered interphase effectively suppresses zinc dendrite growth and parasitic reactions, significantly improving interfacial stability. As a result, the modified zinc anode exhibits exceptional cycling durability, maintaining stable operation for over 1800 h at 5 mA cm ⁻² . This work provides new insights into the regulation of interphase chemistry via external field‐induced reactions, offering a promising avenue for developing high‐performance metal anodes.