Nanoplate-stacked baguette-like LiVO3 as a high performance cathode material for lithium-ion batteries

Abstract

LiVO₃ has been proposed as an appealing cathode material to substitute traditional capacity-limited cathodes for high energy lithium-ion batteries. However, just like other Li–V–O compounds, the application of the LiVO₃ cathode is restricted by its poor cycling stability and rate capability. In this paper, we report, for the first time, nanoplate-stacked baguette-like LiVO₃ by an in situ template method. In this unique structure, the micro-sized baguette shape can help to inhibit the dissolution of vanadium in comparison with nanosized LiVO₃, and the stacked nanoplates can provide short diffusion pathways for lithium ions. Benefiting from these advantages, this material can deliver a very high capacity of 275.6 mA h g⁻¹ with excellent cycling stability, Moreover, a capacity of 156.1 mA h g⁻¹ can be obtained up to 4 C (1200 mA g⁻¹). The exceptional electrochemical performance suggests the use of nanoplate-stacked baguette-like LiVO₃ as an alternative cathode material for high-energy lithium-ion batteries. Particularly, the synthesis strategy demonstrated herein may be extended to fabricate other types of multifunctional vanadium-based compounds for energy storage.