Abstract: Lithium vanadium oxide (Li₃VO₄) has gained attention as an alternative anode material because of its higher theoretical capacity (592 mAh g^-1), moderate ionic conductivity (~10^-4 S cm^-1), and lower working voltage range (~0.5-1.0 V vs. Li/Li⁺) in comparison to other metal oxides. However, there are disadvantages to using Li₃VO₄ as an anode material, such as low initial Coulombic efficiency and poor rate performance that is attributed to its low electronic conductivity (<10^-10 S cm^-1). In the present study, the synthesis of one-dimensional Li₃VO₄ electrode was performed via a facile method by using oxidized vapor grown carbon fiber as a template and the formation of the outer shells of conductive carbon via chemical vapor deposition technique. In a half-cell configuration, the prepared Li₃VO₄ composites exhibited an enhanced electrochemical performance with a reversible capacity of 516.2 mAh g^-1 after 100 cycles at a rate of 0.5 C within the voltage range of 0.01-3.0 V. At a high rate of 5 C, a large reversible capacity of 322.6 mAh g^-1 was also observed after 500 cycles. The full cell (LVO/VGCF16-C||LiCoO₂) using LiCoO₂ as the cathode showed competitive electrochemical performance, which demonstrates its high potential in commercial applications.

Key words: Lithium-ion batteries, Anode materials, Lithium vanadium oxide, One-dimensional electrode, Carbon fiber