Synthesis of V2O5 nanoparticles: cathode materials for lithium-ion batteries

Vanadium oxide-based nanomaterials have been showing great promise as cathode materials for lithium-ion batteries (LIBs). Among these, nanostructured V2O5 shows a high discharge capacity due to its layer structure and thermodynamically stable form. This work reports the synthesis of V2O5 nanoparticles via a simple low temperature hydrothermal method using ammonium vanadate and quinol. The reduced size of V2O5 has resulted in the blue shift of the absorption spectrum. The material has been examined as a cathode material to study lithium intercalation/deintercalation. It shows an initial discharge capacity of 310 mAh g(-1) at a current density of 0.1 mA g(-1) at 1.5-4 V and retains a specific discharge capacity of 184 mAh g(-1) even after 58 cycles. The present study manifests how the nanostructured size V2O5 could be applied as a high-energy cathode material for LIBs.