Highly Reversible Zn Anode Enabled by Controllable Formation of Nucleation Sites for Zn‐Based Batteries

Abstract Aqueous Zn batteries have drawn tremendous attention for their several advantages. However, the challenges of Zn anodes such as the corrosion and ZnO densification have compromised their application in rechargeable Zn‐based batteries. In this paper, a straightforward strategy is employed to facilitate the uniform Zn stripping/plating of the Zn anode through using a ZrO 2 coating layer, which contributes to the controllable nucleation sites for Zn 2+ and fast Zn 2+ transportation through the favorable Maxwell–Wagner polarization. As a result, the low polarization (24 mV at 0.25 mA cm −2 ), high Coulombic efficiency (99.36% at 20 mA cm −2 ), and long cycle life (over 3800 h at 0.25 mA cm −2 ) can be…

• NN
  National Natural Science Foundation of China

  Awards: 21935003, 21805182