Crystalline‐Amorphous Phase and Oxygen Vacancies Synergistically Regulate Vanadium Electronic States for Unleashing Zinc‐Ion Storage Performance

Abstract Zinc‐ion capacitors (ZICs) are emerging as a compelling choice for energy storage in future, promising high power and energy densities coupled with eco‐friendly characteristics. This work presents a novel approach to enhance the performance of ZICs by employing a one‐step solvothermal synthesis to growth V‐MOF on the surface of V 2 CT X ‐MXene, followed by annealing to fabricate a 3D cross‐linked VO X /V 2 CT X ‐MXene‐x(VO X /MXene‐x) composite. The unique structure demonstrates excellent conductivity and high redox reaction activity, which significantly shortens the Zn 2+ diffusion path. Moreover, the intertwined crystalline‐amorphous structure efficiently suppresses lattice volume expansion during…

• NS
  Natural Science Foundation of Heilongjiang Province

  Award: LH2021B029