A scalable synthesis of 2D laminate Li3VO4/C for robust pseudocapacitive Li-ion storage

Abstract

Li₃VO₄ is a new insertion type anode material with combined merits of high capacity and safety, demonstrating great potential in Li-ion batteries. However, its practical application is hindered by unscalable fabrication coupled with particular challenges in morphology regulation and unsatisfactory rate capability. Here, a 2D laminate Li₃VO₄/C anode is first constructed via a concise, low-cost, and environment-friendly biomass-aided approach. Li₃VO₄/C shows robust pseudocapacitive Li-ion storage, rendering high capacity and excellent rate capability. After 4 periodic rate performance testing from 0.1 to 2.0 A g⁻¹ over 330 cycles, a high reversible capacity of 612.0 mA h g⁻¹ can be reverted. The excellent performance of the 2D laminate Li₃VO₄/C and the scalable fabrication approach will advance the practical applications of Li₃VO₄.