V2O5 layered nanofibers as high-performance cathode for lithium-ion batteries.

Among various cathode materials for lithium-ion batteries (LIBs), V₂O₅ stands out due to the unique layered structure, wide ion diffusion channels and higher theoretical specific capacity. However, the inherent low conductivity and poor structure stability of V₂O₅ lead to the inferior electrochemical properties. In this work, V₂O₅ nanofibers with high porosity were prepared via electrostatic spinning method combined with subsequent calcination. The obtained V₂O₅ nanofibers deliver a short ion diffusion path and provide a higher specific surface area. On the basis of the above advantages, the V₂O₅ nanofibers cathode exhibits impressive performance metrics: 311.6 mAh/g at 0.1 A/g and 223.0 mAh/g at 1 A/g with 99.0% capacity retention after 150 cycles. The above results reveal that the electrodes prepared using the electrostatic spinning technique combined with the heat treatment method display excellent electrochemical properties. Therefore, the V₂O₅ nanofiber electrode material has a broad application prospect. [ABSTRACT FROM AUTHOR]