▎ 摘　　要

This article aims to prepare a novel energy storage material metal chalcogenide graphene composite nanomaterial. In this article, the metal chalcogenide graphene composite nanomaterial pair is taken as the research object. The negative electrode material of sodium ion battery is selected as the preparation sample. The NbS2 nanosheet and graphene composite ce-V5S8-C nanosheet are successfully prepared and characterized by XRD SEM, TEM, etc. are used to characterize their micro-morphology, to study the electrochemical performance of their anode materials, through in-depth analysis and discussion of the reaction principles and structural evolution of these two materials during the sodium storage process. Experimental data shows that in the preparation and energy storage system of metal chalcogenide graphene composite nanomaterials, the metal chalcogenide used for the negative electrode material has a relatively high energy density and relatively long cycle life in sodium ion batteries. This experimental study shows that the preparation of metal chalcogenide graphene composite nanomaterials and the use of metal sulfur compounds in energy storage systems can increase the life of lithium batteries by 20% and reduce the volume by 10%. This research can further promote the development of sodium ion batteries.