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Updated: May 22, 2025

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
Coordination optimization of central V atoms induced by Cu2+ for enhanced Zn2+ storage in layered vanadium oxides
Shengkun Jia1, Jinxia Nong1, Ziyin Lu1
1College of Materials Science and Engineering, Guilin University of Technology, Guilin, China.
Abstract:
The development of cathode materials with fast kinetics and excellent cycling stability is essential to fully utilize the safety and economic advantages of aqueous zinc-ion batteries (AZIBs). In this study, a facile solvothermal route was designed to synthesize oxygen vacancy-rich CuxV10O24·nH2O (CVO-0.1) cathode materials. The introduction of Cu2+ into layered V10O24·nH2O induced oxygen vacancies and modulated the local coordination environment of V atoms, thereby optimizing the electronic structure, enhancing defect states, and improving electrical conductivity. This strategy effectively reduced the Zn2+ diffusion resistance while stabilizing the vanadium oxide framework. Owing to these structural merits, the CVO-0.1 cathode exhibited exceptional electrochemical performance, retaining 91.4 % capacity after 4,000 cycles. The reversible Zn2+ storage mechanism was further elucidated through in ex-situ characterization. This study provides new insights into the design of high-performance AZIBs cathode materials.
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