Surface-tuned two-dimension MXene scaffold for highly reversible zinc metal anode

Zinc metal has aroused increasing interest as anode material of Zn-based batteries for their energy storage application.However,the uneven Zn stripping/plating processes induce severe dendrite growth,leading to low Coulombic efficiency and safety hazards.Herein,a surface-tuned two-dimensional(2D)MXene Ti_(3)C_(2)Tx scaffold as a robust skeleton is developed to facilitate the uniform Zn stripping/plating.The Ti_(3)C_(2)Tx with high electrical conductivity and unique structure provides fast ionic-transport paths,promising even Zn2+stripping/plating processes.With suppressed Zn dendrite growth and uniform nucleation,the proposed 2D Ti_(3)C_(2)Tx scaffold for Zn metal anode delivers a low voltage hysteresis of 63 m V and long lifespan over 280 h.This surface-tuned engineering strategy demonstrates the potential application of Zn anode with MXene skeleton for next-generation Zn-based batteries.