Flexible design of large layer spacing V-MoS2@C cathode for high-energy zinc-ion battery storage

In general, aqueous Zn-ion batteries (ZIBs) are considered to be ideal candidates over Li-ion batteries due to their high safety and environmental friendliness. ZIBs development is limited by the lack of cathode materials that are suitable for rapid Zn-ion reversibility. In this work, V-intercalated MoS2 (V-MoS2) nano materials were prepared by using a simple one-step hydrothermal method. The unique layered structure and large interlayer of the prepared nanomaterials could effectively reduce the energy barrier of the electrochemical process and enhance the reversible insertion/deinsertion rate of Zn ions during cycling. Electrochemical results indicated that the obtained V-MoS2 cathode could obviously improve the discharge specific capacity and cycle stability of ZIBs. This study promotes the development of MoS2-based cathode materials for batteries and the large-scale commercialization of ZIBs. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Automated summary

This study improved the discharge specific capacity and cycle stability of ZIBs by preparing V-intercalated MoS2 nano materials, promoting the development of MoS2-based cathode materials and the commercialization of ZIBs.