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Zinc-ion batteries are considered as potential large-scale renewable energy storage devices due to low redox potential, low cost, large capacity, high electric conductivity, nontoxicity and easy processing of zinc metal. However, the development of cathode materials for zinc-ion batteries to date has been mainly limited to tunnel manganese oxides and Prussian blue analogues. Here we have firstly developed NASICON structured Na₃V₂(PO₄)₃ as cathode material for Zn-ion batteries. To compensate the low conductivity, graphene-like carbon wrapped Na₃V₂(PO₄)₃ nanoparticles are fabricated. With Na₃V₂(PO₄)₃/C as cathode, Zn metal as both counter and reference electrodes, and 0.5 mol L⁻¹ Zn(CH₃COO)₂ solution as electrolyte, the aqueous Zn-ion battery delivers a reversible capacity of 97 mA h g⁻¹ at 0.5 C and retains 74% capacity after 100 cycles. Meanwhile, the battery can be charged and discharged at …