Synergistic Interphase-Solvation Dual-Regulation Engineering via a Zwitterion Electrolyte Additive for Ultrastable Zn Metal Anodes
Chenbo Yuan·S M Wang·Chen Wang·Hang Shang·Runze Tian·S M Liu·Jie Sun·Haijia Quan·Xiaowen Zhan·Chenglin Sun·Hongdi Lu
Aqueous Zn-metal batteries (AZMBs) are plagued by dendrite growth and parasitic reactions at the anode, limiting their commercial viability. While electrolyte additives offer promise, conventional monofunctional additives provide insufficient defense to Zn anodes. Herein, we introduce a zwitterionic 3-aminopropanesulfonic acid (APS) additive that enables an interphase-solvation dual-regulation (ISDR) mechanism. APS can specifically adsorb on Zn anodes, creating a water-poor and zincophilic elect