Event : On September 19th, the annual output of 300 tons of graphene project of Ningbo Moxi Technology Co., Ltd. in Cidong Binhai District, Cixi City, Zhejiang Province was officially started. The first phase of the project invested 210 million yuan, and it is estimated that the annual output of graphene is 300 tons. The estimated annual output value is 2 billion yuan. Comments: 1. The world's first production line solves the problem of mass production of graphene. It is of great significance. Graphene has excellent electrical, thermal, structural and mechanical properties, as well as a series of special properties such as perfect quantum tunneling effect and excellent electrical conductivity. Because of these properties, it has a broad application prospect in the fields of next-generation transistors, transparent conductive films, energy storage technologies, chemical sensing, functional composites, etc., and is considered to be a new material that has the potential to change the world. In order to achieve in-depth research and industrialization of graphene, it is necessary to first achieve low-cost mass production. Therefore, the construction of the first graphene production line is of great significance. In addition, the Institute of Materials Science of the Chinese Academy of Sciences has developed a batch preparation technology for graphene, which reduces the manufacturing cost of graphene from 5,000 yuan/gram to 3 yuan/gram. It is estimated that the mass production of graphene products is priced at 5-7 yuan / gram. These advances have greatly advanced the industrialization of graphene. 2. The graphene industry chain is gradually taking shape. It will probably first obtain the batch application of graphene in lithium-ion batteries. It won the 2010 Nobel Prize in Physics and attracted worldwide attention. Many researchers have applied the application of graphene. Extensive research has led to the development of graphene lithium-ion batteries, graphene LCD panels, graphene capacitive touch screens, graphene field effect transistors and graphene solar cells. After the low-cost mass production of graphene, the batch application of graphene will be realized, the industrial chain will be gradually formed, and the graphene application products with excellent performance and moderate price will enter the market and reach thousands of households. From the perspective of applied research, graphene is more likely to be used first in lithium-ion batteries. One direction is a graphene composite electrode material. The excellent electrical conductivity of graphene can improve the electrical conductivity of the electrode material, thereby increasing the charge and discharge speed of the lithium ion battery. At the same time, the "flexible" two-dimensional layered structure of graphene can effectively inhibit the volume change of the electrode material during charge and discharge. The resulting material chalks and enhances the conductive contact with the current collector. Therefore, graphene can improve the electrochemical performance of the positive and negative materials of lithium batteries, and a lithium iron phosphate/graphene composite cathode material is a good example. The other direction is as a conductive additive for lithium batteries. After the addition of graphene, the lithium battery has a very large improvement in the high current charge and discharge performance, cycle stability and safety. Lithium-ion batteries with improved performance by adding graphene are likely to be fully charged in about ten minutes and can be used for 500 kilometers on a single charge.
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