OPTIMIZATION OF SODIUM VANADATE (NVO) AS CATHODE MATERIAL FOR ZINC-ION BATTERIES

Abstract

In this paper, the optimization of sodium vanadate (NVO) as cathode material for zinc-ion batteries (ZIBs) and the improvement of the material's synthesis are reported. Following the convincing capacities obtained for ZIBs using vanadium pentoxide (V₂O₅) as a cathode material, it is tried to further enhance the latter’s electrochemical performances through the insertion of sodium ions into the crystallographic structure of V₂O₅. Acting as stabilizing pillars, the added sodium ions allow NVO cathode material to reach extremely high cycling numbers without a considerable loss of capacity. Special attention is paid to the ecological aspect of the synthesizing method, as ZIBs are considered as being a sustainable and eco-friendly alternative to LIBs.