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

Abstract

ABSTRACT 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//NH 4 V 4 O 10 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.