High‐Performance Aqueous Zinc–Ion Battery Based on Layered H 2 V 3 O 8 Nanowire Cathode

Abstract Rechargeable aqueous zinc–ion batteries have offered an alternative for large‐scale energy storage owing to their low cost and material abundance. However, developing suitable cathode materials with excellent performance remains great challenges, resulting from the high polarization of zinc ion. In this work, an aqueous zinc–ion battery is designed and constructed based on H 2 V 3 O 8 nanowire cathode, Zn(CF 3 SO 3 ) 2 aqueous electrolyte, and zinc anode, which exhibits the capacity of 423.8 mA h g −1 at 0.1 A g −1 , and excellent cycling stability with a capacity retention of 94.3% over 1000 cycles. The remarkable electrochemical performance is attributed to the layered structure of H 2 V 3 O 8 with…

• NN
  National Natural Science Foundation of China

  Awards: 51502227, 51602239, 51579198, 51521001
• CP
  China Postdoctoral Science Foundation

  Award: 2015T80845
• CS
  China Scholarship Council

  Awards: 201606955094, 201606955096