Synergistic Enhancement of Intragrain Kinetics and Interfacial Stability in Cr‐Doped VO2@Carbon Cathode Enabling Advanced Aqueous Zinc‐Metal Batteries

VO 2 has gained attention as a promising cathode material owing to its favorable ion diffusion pathways and abundant valence states. However, its performance is hindered by sluggish kinetics from zinc ions, high charge density, and vanadium dissolution induced by reactive water. Herein, Cr, ion doping is utilized to modulate the local electronic structure, enhancing zinc‐ion diffusion. Additionally, a carbon‐coating strategy is applied to reduce vanadium dissolution from excessive water‐VO 2 contact. This dual‐modification approach enables VO 2 to achieve exceptional rate capability and capacity retention, demonstrating 70% capacity retention after 1000 cycles at 3 A g −1 . Moreover, Zn 2+ diffusion in VO 2 after the Cr‐doping and carbon‐coating is significantly improved compared to pure VO 2 . These findings offer new insights into optimizing metal‐ion battery cathode materials.