Facet-Selective Interfacial Regulation for Rapid-Kinetics and Dendrite-Free Zn (100) Deposition With Enhanced Cathode Stability.

The crystallographic orientation of Zn deposition essentially controls the electrochemical efficiency of aqueous Zn metal batteries. While (002)-oriented growth suppresses dendrites, its sluggish kinetics limit rate capability; the (100) plane enables faster deposition but promotes disordered growth. Here, a facet-selective interfacial strategy enables stable and dense Zn (100)-dominated deposition through selective passivation of the Zn (002) facet. An amphiphilic phospholipid additive preferentially adsorbs on the Zn (002) planes, where steric hindrance suppresses basal-plane activity and favors the exposure of the kinetically favorable Zn (100) orientation. The Zn//Zn symmetric cells demonstrate the kinetic advantage of Zn (100)-guided deposition by exhibiting ultralong cycling stability exceeding 5200 h at 2.5 mA cm-2 and 0.5 mAh cm-2, cycling stably for over 500 h at 5 mA cm-2 and 5 mAh cm-2, and maintaining stable operation (220 h) even under 50 mA cm-‍2 and 1 mAh cm-2. Moreover, cathode-side corrosion and vanadium dissolution are effectively suppressed, enabling Zn//NH4V4O10 full cells to sustain cycling for over 2000 cycles while retaining 86.6% of the initial capacity (149 mAh g-1) at 5 A g-1. To enable high-rate and long-cycle zinc batteries, this study offers a generalizable mechanistic framework for understanding and regulating Zn (100)-oriented nucleation and development.