Synthesis of $$\hbox {V}₂ \hbox {O}₅$$ V 2 O 5 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 $$\hbox {V}₂\hbox {O}₅$$ shows a high discharge capacity due to its layer structure and thermodynamically stable form. This work reports the synthesis of $$\hbox {V}₂\hbox {O}₅ $$ nanoparticles via a simple low temperature hydrothermal method using ammonium vanadate and quinol. The reduced size of $$\hbox {V}₂\hbox {O}₅ $$ 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 $$310 \hbox { mAh } \hbox {g}^-1$$ at a current density of $$0.1 \hbox { mA } \hbox {g}^-1$$ at 1.5–4 V and retains a specific discharge capacity of $$184 \hbox { mAh } \hbox {g}^-1$$ even after 58 cycles. The present study manifests how the nanostructured size $$\hbox {V}₂\hbox {O}₅$$ could be applied as a high-energy cathode material for LIBs.