The Synthesis And The Research On Battery Performance Of Li₃VO₄/MoS₂ Composites

Energy and environment are the two main topics in modern society and new age. With the development of the world, the demand for energy is increasing rapidly. The pollution caused by the traditional fossil fuels has become more and more serious, however. Thus, the investigations on new energy resources and clean chemical engineering make great significance in order to solve urgent problems from energy shortage and the environmental pollution.Electric energy is a kind of clean energy, and batteries with high efficiency and security has been the key point for its development. In the existing rechargeable batteries, lithium ion battery has many advantages, such as high voltage, high specific energy, long charge discharge life, good cycle performance, no memory effect and environment friendly. As a result, researches on lithium ion battery become the hot point and show great potential prospect. The features of positive and negative electrode materials in lithium ion batteries mainly determined the performance of lithium ion batteries. Currently, there are obvious shortcomings for the commercial carbon anode used in lithium ion battery. Therefore, the exploration of new anode materials with high performance, low cost, safety and low pollution has become an urgent issue, possibly making a breakthrough in the existing technology.In this work, Li3 VO4microcrystal with pure phase and uniform morphology was synthesized by using one step solvthermal system in a high temperature and high pressure autoclave. MoS2 nanosheet with pure phase was prepared through conventional hydrothermal method. Then Li3VO4/MoS2 composite materials were obtained by using the above obtained LisVO4 and MoS2. All the materials were characterized through XRD、TEM、SEM、ICP-AES、N2adsorption techniques, and the synthesis processes were investigated in detail. The parameters of synthesis reaction and composition process were optimized. Such reaction system was facile, quick, low pollution, safe and environmental benign. The electrochemical properties of the Li3VO4/MoS2 composite as lithium ion battery anode materials were tested. It confirmed that such composite showed high capacity and good cycling performance, and could be used as promising anode material.