Dual Effects of Metal and Organic Ions Co‐Intercalation Boosting the Kinetics and Stability of Hydrated Vanadate Cathodes for Aqueous Zinc‐Ion Batteries

Abstract For the development of aqueous zinc‐ion batteries, exploiting vanadium‐based cathode materials with quick kinetics and acceptable cycling stability is crucial. Herein, to achieve these goals, transition metal ions (Zn 2+ ) and organic ions (C 5 H 14 ON + and Ch + ) are introduced into layered hydrated V 2 O 5 . The intrinsic high conductivity of Ch + and the oxygen vacancies generated through ion pre‐intercalation accelerate the electrical mobility by optimizing the electronic structure. The Zn 2+ stabilizes the layered structure and the expanded interlayer spacing improves the ionic diffusivity. The synergistic effect of pre‐intercalated Zn 2+ and Ch + results in the (Zn 0.1 , Ch 0.1 )V 2 O 4.92…

• NN
  National Natural Science Foundation of China

  Award: 52102277
• ZU
  Zhejiang University

  Award: SKL2022-05
• SK
  State Key Laboratory of Silicon Materials

  Award: SKL2022-05
• FR
  Fundamental Research Funds for the Central Universities