ABSTRACT Aqueous zinc metal batteries (AZMBs) are regarded as the promising candidates for low‐cost, sustainable, but safe energy storage systems. Unfortunately, Zn metal anodes suffer from incomplete desolvation and random dendrite formation, which is attributed to sluggish diffusion kinetics resulted from the strong ion (Zn 2+ )‐dipole (H 2 O) interactions. Herein, to promote the Zn 2+ desolvation and diffusion kinetics, the strategy of constructing perovskite‐type ion‐conductive kinetic modulators of ZnSn(OH) 6 is initially designed and coated on the Zn metal anode (PIC‐ZSH@Zn), regulating ion behaviors against dendrite growth and side reactions of active water. As confirmed by theoretical simulations, COMSOL, time‐of‐flight second‐ionic mass spectroscopy, Raman and various electrochemical analyses, the abundant active sites synergistically weaken Zn 2+ ‐H 2 O interactions to accelerate desolvation to release free Zn 2+ , effectively homogenizing the Zn 2+ flux distribution to preferentially nucleate and plate metallic Zn. Consequently, the as‐fabricated cell maintains reversible stability of 800 h at 10 mA cm −2 with high Coulombic efficiency over 99% under low temperature of 0°C. The paired full cell with PIC‐ZSH@Zn presents a high‐capacity retention of nearly 80% after 1000 cycles at 1.0 A g −1 at 0°C, reinforcing the operation robustness of AZMBs under low temperature environments.
Wang et al. (Sun,) studied this question.