| 초록 |
Interface modification is considered as a straightforward strategy to regulate the electrochemical environment of metal anodes and to provide a physically protective interphase. Herein, we develop galvanically replaced artificial interfacial layers, where Sn, Sb, and Bi are uniformly coated on Zn anode (designated as Zn|Sn, Zn|Sb, and Zn|Bi, respectively), for use in high-performance aqueous zinc-ion batteries (AZIBs). Considering that the thickness, morphology, and crystallinity of the coating layers vary depending on the chemical identity, Zn|Sn achieves the optimum electrochemical performance. Consequently, the Zn|Sn symmetric cells preserve stable operating profiles for 2000 h at 4 mA cm–2, corresponding to a high cumulative capacity of 4000 mA h cm–2. In particular, the AZIB full cells by pairing Zn|Sn with β-MnO2 deliver high capacity of 92.8 mA h g-1 even at a high current rate of 5000 mA g–1 and 73% capacity retention after 1000 cycles at 1000 mA g–1. |
