CaV6O16•3H2O nanorods as cathode for high-performance aqueous zinc-ion battery

The cathode materials used in aqueous zinc-ion batteries (ZIBs) suffer from poor cycling performance, which largely restricts the development of aqueous ZIBs. A one-dimensional rod-like CaV6O16 center dot 3H(2)O cathode is designed and fabricated for aqueous ZIBs via a simple hydrothermal route. The unique interlayered structure of CaV6O16 center dot 3H(2)O nanorods provides sufficient interlayer spacing for mass transfer and electrons/ions transportation. Besides, the synergistic effect between V6O16 frameworks and intercalated Ca atoms as well as water molecules improves the stability of electrode materials. Herein, the asprepared CaV6O16 center dot 3H(2)O cathode displays an enhanced cycle ability and excellent rate capability, highlighting the material advantages for an environment-friendly application and devices. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

A one-dimensional rod-like CaV6O16 center dot 3H(2)O cathode with a unique interlayered structure is designed and fabricated for aqueous ZIBs, providing sufficient interlayer spacing for mass transfer and electrons/ions transportation. The synergistic effect between V6O16 frameworks and intercalated Ca atoms as well as water molecules improves the stability of electrode materials, leading to enhanced cycle ability and excellent rate capability of the cathode.