Facile preparation of a V2O3/carbon fiber composite and its application for long-term performance lithium-ion batteries

Abstract

In the present work, a vanadium-trioxide/carbon-nanofiber composite (V₂O₃/CNF), integrated with different amounts of V₂O₃, was synthesized by a simple approach. After a simple combined electrospinning and carbonization process, V₂O₃ nanoparticles were successfully distributed through carbon fibers. Due to the synergistic effect between V₂O₃ and carbon, V₂O₃/CNF as an anode of lithium-ion batteries (LIBs) exhibits high reversible capacity and excellent long-term cycling stability. The content of V₂O₃ is of great importance to the electrochemical performance. The V₂O₃/CNF with the optimized content of V₂O₃ (57 wt%) shows a capacity of 544 mA h g⁻¹ at a current density of 0.5 A g⁻¹ after 500 cycles. More importantly, a capacity of 204 mA h g⁻¹ at a high current density of 4 A g⁻¹ can be retained after 1000 cycles.