Constructing nano‐channeled tin layer on metal zinc for high‐performance zinc‐ion batteries anode

Abstract Rechargeable aqueous zinc‐ion batteries (ZIBs) have recently been comprehensively studied because of metal zinc (Zn) unique properties. However, the problems of metal zinc anode in ZIBs, namely, dendrite formation and side reactions, seriously shorten the cycling lifetimes and limit the coulombic efficiencies. Here, the tin (Sn) layer with a three‐dimensional nano‐channeled structure is decorated on zinc metal via a facile in situ substitution reaction, constructing the Sn modified Zn (Sn‐Zn) anode for high‐performance ZIBs. Multiscale investigation techniques, especially micro‐CT, are used to investigate the inhibition of zinc dendrites. In addition, the induction mechanism of Zn by Sn is also elaborately investigated. The designed Sn‐Zn anode can alleviate zinc dendrite growth and ensure long‐life stability. This work brings exciting new possibilities for the realization of industrial aqueous zinc‐ion batteries and provides new insights for the rational deposition of the Zn metal anodes. image