High-performance Ag0.333V2O5 nanowires as cathode materials for aqueous zinc-ion batteries

Abstract

Aqueous zinc-ion batteries (AZIBs) have attracted wide attention for large-scale energy storage owing to their low cost and intrinsic safety. However, the development of high-performance cathode materials remains a challenge. Herein, a nanowire-like Ag_0.333V₂O₅ was synthesized via a facile one-step hydrothermal method and systematically investigated as a cathode material for AZIBs. Benefiting from its one-dimensional nanowire architecture and Ag⁺ pre-intercalation, the as-prepared Ag_0.333V₂O₅ nanowires exhibit favorable electrochemical performance. They deliver a high specific capacity of 378 mAh g⁻¹ at a current density of 0.1 A g⁻¹, and an excellent cycling stability, retaining 92% of the initial capacity after 500 cycles at 2 A g⁻¹. These results demonstrate that the Ag_0.333V₂O₅ nanowires are promising cathode candidates for aqueous zinc-ion energy storage systems.