ZnWO4 nanosheets anchored into reduced graphene oxide as anode materials for enhanced sodium-ion storage performance

Abstract

Sodium ion batteries (SIBs) have been considered a potential candidate for lithium ion batteries (LIBs) to enable remarkable improvement in future new-style energy storage systems, but the development of the SIBs with excellent sodium storage performance still retain major challenge. ZnWO4/reduced graphene oxide (ZnWO4/RGO) nanocomposites were prepared via hydrothermal and used as an anode for sodium ion batteries for the first time, showing a higher discharge capacity and better rate capability as compared to plain ZnWO4 nanosheets. The significant enhancement in performance may be ascribed to the unique nanomaterials with good electronic and ionic conductivity, superior structure flexibility and fast diffusion kinetics. This work could provide a promising route to construct novel materials as a highly attractive zinc-based anode for high performance SIBs.