Abstract

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.

摘要

本文旨在制备一种新型储能材料金属硫属化物石墨烯复合纳米材料。本文以金属硫属化物石墨烯复合纳米材料对为研究对象。选用钠离子电池负极材料作为制备样品。NbS ₂纳米片和石墨烯复合材料ce-V ₅ S ₈-C纳米片制备成功并通过XRD表征 SEM、TEM等表征其微观形貌，研究其负极材料的电化学性能，通过对反应原理和结构演变的深入分析和讨论这两种材料在钠储存过程中。实验数据表明，在金属硫属化物石墨烯复合纳米材料的制备和储能体系中，负极材料所用的金属硫属化物在钠离子电池中具有较高的能量密度和较长的循环寿命。本次实验研究表明，金属硫属化物石墨烯复合纳米材料的制备和金属硫化合物在储能系统中的应用，可使锂电池寿命提高20%，体积缩小10%。这项研究可以进一步推动钠离子电池的发展。