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In recent years, my country's new energy vehicle industry has developed rapidly. However, industrial development is also faced with technical bottlenecks such as low battery energy density, insufficient cruising range, and long charging time. Industry pain points have prompted the new energy vehicle industry chain to actively search for new alternative materials to realize energy A major breakthrough in density. Graphene has entered the field of new energy automobile industry due to its good optical, electrical and mechanical properties. Graphene batteries are also considered to be one of the solutions to increase battery energy density and shorten charging time.
The new energy field has broad application prospects
Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms with sp2 hybrid orbitals forming a hexagonal honeycomb lattice. In 2010, physicists Andre Geim and Konstantin Novoselov of the University of Manchester in the United Kingdom successfully separated graphene from graphite using micromechanical exfoliation methods, and therefore jointly won the 2010 Nobel Prize in Physics. This is also a sign that society is paying increasing attention to graphene.
Because graphene has good electrical and thermal conductivity, it currently has broad application prospects in six major fields: new energy, coatings, composite materials, general health, energy conservation and environmental protection, and electronic information. Especially in the field of new energy, everyone generally has great expectations for improving the energy density of power batteries and shortening charging time through the application of graphene materials.
Yuan Jun, engineer of Ningbo CRRC New Energy Technology Co., Ltd., introduced at the Beijing Graphene Forum 2018 that because graphene has a high surface specific area and excellent conductivity, the company's R&D team has been studying how to further improve the quality of graphene by adding graphene. To improve the energy density and power density of supercapacitors, it has been proven that adding graphene improves the product performance of supercapacitors and can better meet the current power needs of rail transit and vehicles. ˆ
It takes time to go from materials to equipment
However, despite the high popularity of the industry, strong market demand in all aspects, and high enthusiasm of enterprises and research institutions, graphene has not made great progress in industrialization in recent years, and most of it still remains in basic research. , various high-end applications and products have not come out.
Xiao Jinsong, director of the Raw Materials Industry Research Institute of the CCID Research Institute of the Ministry of Industry and Information Technology, said that for a new material to develop into an industry, it must go through a process from "material" to "device". At present, the development of my country's graphene industry still faces shortcomings in three major aspects: technology, market, and cost.
From a technical perspective, there are still problems in the industry that require breakthroughs in key technologies, and the materials produced by companies preparing materials are not up to standard. From 2004 to May this year, the number of patent applications worldwide was about 60,000, and my country accounted for more than half of them. China is in a leading position in the world. However, its innovation capabilities are still insufficient and it lacks real core intellectual property rights. On the one hand, we should be careful to prevent the graphene industry from falling into the low-end trap. We should not only look at the number of patents, but also pay attention to the quality of patents; on the other hand, we should also pay attention to patent protection.
From a market perspective, the current industrial development lacks the leadership of leading enterprises. Enterprises are scattered, their power is not concentrated, and most of them are small workshop-style start-ups. Most companies pursue all-round development and do not focus on technical division of labor. Data shows that the number of graphene companies in my country has grown rapidly in recent years. In 2015, there were about 350 graphene companies in my country, which increased to 2,059 in 2016 and 4,638 in 2017. However, only 1/5 of them actually started business. about.
There are also certain shortcomings in the application of graphene. Because downstream application companies have not fully realized the manufacturing of some high-end application products, there is a phenomenon of production capacity but no output. From 2016 to now, my country's overall graphene production capacity has reached approximately 60,000 tons, but much of the production capacity has not yet been fully converted into output.
In terms of cost, since graphene is a new material, the research and development cycle of new materials is generally long and the investment in research and development is very huge. As a result, the current application cost of graphene is generally high.
Xiao Jinsong pointed out that the above shortcomings have seriously restricted the process of graphene industrialization in my country. In addition, issues such as standardization should also be taken seriously.
R&D OEM provides convenience for the integration of production and research
Liu Zhongfan, the founding director of the Beijing Graphene Research Institute, pointed out that the new graphene material industry is still at the peak of expectations rather than the peak of development. The quality of current graphene is not enough to support the future graphene industry competition. Graphene The "killer trump card" and applications are still being explored, and no unique and indispensable applications have yet been found.
A prominent contradiction in the current graphene industry is that the integration of production and research needs to be further strengthened. At present, graphene companies are generally small and comprehensive, with insufficient R&D capabilities. It is difficult to form real core competitiveness and achieve key technological breakthroughs. Universities often have rich scientific research capabilities, but they are still insufficient in integrating with industry.
Liu Zhongfan said that in order to solve this problem, the Beijing Graphene Research Institute proposed the concept of R&D OEM, which means to set up a specialized R&D team composed of high-level professionals to meet the R&D needs of specific enterprises and carry out customized R&D services based on market demand. technology R & D. By bundling the interests of the entire project between the enterprise side and the engineering side, we can provide long-term and stable services to the enterprise's high-tech research and development, thereby achieving a seamless connection from technology research to industrialization. At present, the institute has established the first five R&D OEM centers and will contribute its experience and wisdom to the further integration of government, industry, research and academia in the graphene industry.
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