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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.

Zinc-ion battery --- Sodium vanadate --- ZIB --- NVO --- Na0.33V2O5 --- Na1.1V3O7.9 --- triflate --- aqueous electrolyte --- liquid pathway --- stirring --- hydrothermal --- calcination --- thermal treatment --- XRD --- SEM --- specific capacity --- cycle number --- stability --- pillars --- sodium ions --- Physique, chimie, mathématiques & sciences de la terre > Chimie