Aqueous rechargeable Zn-ion batteries: an imperishable and high-energy Zn2V2O7 nanowire cathode through intercalation regulation

α-Zn2V2O7 nanowire is utilized as cathode for aqueous Zn-ions energy storage application. This cathode is sustained a high reversible capacity of 138 mA h g−1 after 1000 cycles and displays a high specific energy, added advantage for aqueous battery system.