Rechargeable aqueous zinc‐ion batteries have been considered as a promising candidate for next‐generation batteries. However, the formation of zinc dendrites are the most severe problems limiting their practical applications. To develop stable zinc metal anodes, a synergistic method is presented that combines the Cu‐Zn solid solution interface on a copper mesh skeleton with good zinc affinity and a polyacrylamide electrolyte additive to modify the zinc anode, which can greatly reduce the overpotential of the zinc nucleation and increase the stability of zinc deposition. The as‐prepared zinc anodes show a dendrite‐free plating/stripping behavior over a wide range of current densities. The symmetric cell using this dendrite‐free anode can be cycled for more than 280 h with a very low voltage hysteresis (93.1 mV) at a discharge depth of 80 %. The high capacity retention and low polarization are also realized in Zn/MnO2 full cells.

A combination of a Cu–Zn solid solution interface on copper mesh with good zinc affinity and a polyacrylamide electrolyte additive (PAM) is developed to modify the zinc anode. As shown by H. Wang et al. in their Communication on page 15841 ff., the Cu–Zn solid solution formed in the initial process can regulate zinc nucleation and PAM can suppress the growth of zinc dendrites in the subsequent cycles. The prepared zinc anodes show a dendrite‐free behavior.

Rechargeable aqueous zinc-ion batteries have been considered as ap romising candidate for next-generation batteries.H owever,t he formation of zinc dendrites are the most severe problems limiting their practical applications.T od evelop stable zinc metal anodes,asynergistic method is presented that combines the Cu-Zn solid solution interface on ac opper mesh skeleton with good zinc affinity and ap olyacrylamide electrolyte additive to modify the zinc anode,whichcan greatly reduce the overpotential of the zinc nucleation and increase the stability of zinc deposition. The as-prepared zinc anodes show adendrite-free plating/stripping behavior over awide range of current densities.T he symmetric cell using this dendrite-free anode can be cycled for more than 280 hw ith av ery lowv oltage hysteresis (93.1 mV) at ad ischarged epth of 80 %. The high capacity retention and low polarization are also realized in Zn/MnO 2 full cells.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

No abstract

No abstract