Structure Control In Vnxoy By Hydrogen Bond Association Extraction For Enhanced Zinc Ion Storage

Rechargeable aqueous zinc ion batteries have attracted significant attention for potential applications in large-scale energy storage. However, developing suitable cathode materials with both high capacity and rate performance remains a great challenge. Herein, we report an efficient method for functional materials via controlling the stage of hydrogen bond association extraction to fabricate well-structured vanadium oxynitride without adding extra templates, turning the waste to advanced materials towards high-performance zinc ion storage. Primary amines as highly efficient selective extractant are used in this work. They result in two different structures, from hollow microsphere to novel 0D-in-2D pillared lamellar structure, for the vanadium oxynitrides. Impressively, based on structural merits of abundant electrolyte-accessible sites and transfer pathways, the resulting products are found to be excellent cathode materials with a high reversible specific capacity and rate capability for rechargeable zinc ion batteries (ZIBs). Hence, this work introduces a new clue for designing unique nanostructure vanadium oxynitride to boost the electrochemical properties of aqueous ZIBs. (C) 2021 Elsevier Ltd. All rights reserved.