Straw-sheaf-like AgVO3 nanowires for remarkable Zn2+ storage properties

Abstract

Zinc-ion batteries (ZIBs) have received considerable attention as promising energy storage devices because of their impressive energy densities and inexpensive cost. However, there are still challenges to be addressed regarding the performance and cycling stability of ZIBs. In this work, a straw-sheaf-like AgVO3 structure assembled from multiple strongly bonded nanowires was successfully synthesized using a one-step hydrothermal route. We investigate the structural advantages offered by the AgVO3 compound for ZIBs. The AgVO3, which is distinguished by one-dimensional nanowires and a straw-sheaf-like architecture, possesses remarkable properties that facilitate efficient zinc ion deintercalation and electron transfer processes. These include the shortened diffusion length caused by the presence of nanowires, which allows for faster ion migration. The tightly bundled nanowires also provide robust structural support, accommodating the significant volume changes caused by repeated electrochemical reactions. Notably, a single crystal structure enables excellent conductivity and electrochemical kinetics. Remarkably, the straw-sheaf-like AgVO3 electrode exhibited excellent reversible capacity (292.3 mAh g−1 at 0.1 A g−1) and long cycling stability. The remarkable electrochemical properties illuminate the potential of AgVO3 as a viable material for ZIBs, paving the way for improved performance and durability in this promising energy storage technology.