Study for the enhanced energy storage properties of α-MoO3 microstructures in lithium ion batteries

Abstract

Orthorhombic α-MoO₃ is one thermodynamically multifunctional material and presents significant performance in lithium-ion batteries. It is interesting to prepare α-MoO₃ structures through a facile method that can deliver a high reversible capacity and excellent capacity retention. In this study, two α-MoO₃ samples with sheet-like structure and strip-like structure were prepared and utilized as anodes of Li-ion batteries. The Li⁺ insertion–extraction process and storage performance were studied. After 400 cycles, the reversible capacity of the sheet-like α-MoO₃ microstructure and strip-like α-MoO₃ microstructure was maintained at 1064.7 and 1143.4 mA h g⁻¹ at a current density of 0.5 A g⁻¹. Furthermore, the strip-like α-MoO₃ microstructure can deliver a stable specific capacity of 554.4 mA h g⁻¹ at a current density of 5.0 A g⁻¹. The excellent reversible capacity and cycling capability suggest that strip-like α-MoO₃ microstructures present promising applications in lithium ion batteries.