Graphene transparent conductive film, thickness less than a millimeter, can be bent at will, will be widely used in mobile phone touch screen, etc., smart phone soft screen, flexible LCD panel may enter people's lives in the near future. Experts and entrepreneurs attending the meeting also pointed out that although the "graphene era is coming", "the preparation technology of graphene and high price" is a "bottleneck" that restricts its marketization. The establishment of the graphene industry technology innovation alliance will break these "bottlenecks".
Foldable charging can not only change the phone
"In the future, these will be widely used in computers, mobile phones, electric blankets, floor heating, etc.". The person in charge of Deyang-Graphene production and preparation company said that the graphene heating film can be used for electric blankets and floor heating. Deicing of the airport runway, greenhouse greenhouse heating, graphene thermal grease for heat dissipation of computers and other items, graphene anti-corrosion mother liquor for ship, container, municipal engineering and other anti-corrosion projects, graphene transparent conductive film will be used for mobile phone touch screen, etc. .
Why are graphene batteries not industrialized?
During the visit, people found that the industrial materials that were far away from themselves could be so close to themselves, and the feeling of black technology at a close distance could be so good. In the show, a transparent film caught the attention of the people. Guo Anxian, head of the R&D company, said that this transparent film that is less than a millimeter and can be bent at will is a graphene conductive film, which will be widely used in touch panels of mobile phones and tablet computers, flexible liquid crystal panels, etc., "Flexible soft-screen mobile phones. It’s not a legend. If you want to get it, you can do it.†Guo Xiaoping, the chief engineer of a lithium battery manufacturer, said that graphene has achieved good results in the production of lithium batteries. “The charging speed has more than doubled and the battery life has increased by ten. More than double."
Reserves account for 40% of the country's preparations
At the end of March, the production line of 30 tons of graphene powder produced by Deyang-Graphene Preparation Enterprise will be put into production. As early as last year, Suining has built a 10-ton graphene powder production line. Graphene preparation has begun to take shape in Sichuan. Tian Yunhui, deputy director of the Science and Technology Department of Sichuan Province, said that the research and development of graphene in Sichuan has a good foundation. Deyang is the first city in China to engage in the large-scale production of graphene. It has achieved several major scientific and technological achievements, and some of its achievements are at the world's leading level. The first large-scale graphene industrial park in the province. Other cities have also actively promoted the research and development of graphene. For example, Suining is developing graphene conductive paste, which promotes the good results of graphene in industrial applications such as new energy and electronic information materials.
Tian Yunhui said that there are abundant graphite resources in Bazhong and Panzhihua in our province, which can provide sufficient raw material guarantee for the development of graphene industry. “The province has 80 million tons of graphite mines, accounting for 40% of the country. Industrial advantages. In addition to the huge demand for graphene materials in the fields of new energy, electronic materials and materials anti-corrosion in our province, it is an important driving force for the development of graphene industry."
Application technology is not mature, restricting market space
Then, since graphene can effectively improve the charging problem and life of the battery, why not scale the industrial application? Guo Xiaoping said that the main problem is cost. "Before the price of graphene was more expensive than gold, it was called 'black gold'. Now it still needs dozens of pieces of one hundred grams. One cell phone battery needs to add three or four grams of graphene. The cost increase can be imagined.
The reporter learned that although Deyang's annual output of 30 tons of graphene production line is about to be put into production, it may not be able to get enough horsepower because of market problems. The person in charge of the company told the reporter that the downstream application companies have not yet found a good job. In this regard, a graphene preparation company in Suining has expressed the same view. Last year, the company built a 10-ton graphene powder production line, but sold less than 100 kilograms a year. After a 30-kilogram sample was sent by a Chengdu company, it was finally exchanged for a 3 kg order, and it was still from Italy.
"The biggest problem in the development of graphene is the application bottleneck." In the view of Chen Guohua, a professor at Huaqiao University, the reason why enterprises rarely use graphene in practical applications is because the core R&D personnel are still not aware of graphene. The bottleneck of the market application of graphene is also the variable of graphene itself. "The same preparation method, the results obtained in different environments are different, so it is a big difficulty to apply to the product."
Li Jiaming: The global big industry should start with a big pattern
How does the use of graphene in Sichuan crack the "obstruction"? The first full group meeting of the Sichuan delegation of the Fourth Session of the 12th National People's Congress was held in Beijing. The reporter handed the issue of the enterprise to the hands of the National People's Congress, Academician of the Chinese Academy of Sciences, and Li Jiaming, director of the Center for Atomic and Molecular Nanoscience of Tsinghua University. Li Jiaming is one of the earliest experts in the study of graphene in China. He suggested that on the basis of the established industrial technology innovation alliance, it is necessary to establish a top "special staff", invite academicians including the chemical industry, chemical fiber and other fields in the two hospitals to collide with domestic first-class experts, ask them to come up with ideas, brainstorm and lower the downstream. The direction is more clear. At the same time, we must do everything possible to reduce the cost of the product. After the application is really profitable, it will naturally increase the application. This is the market choice, not simply relying on publicity.
In order to get a more satisfactory answer to the question, Li Jiaming on behalf of the scene dialed the telephone number of Kong Xiangyang, the special professor of Shanghai Jiaotong University and the director of the Automotive Power Battery Materials Institute, who studied graphene with him in 2004. “The graphene in the strict sense is a single-layer carbon six-membered ring structure, but the carbon products that are currently known as graphene in the industrial production cannot meet such requirements.†Kong Xiangyang pointed out that these are only carbon product upgrades. The version, like "industrial MSG", is used in the field of conductive agents, and the real graphene is still in the technical research stage.
Kong Xiangyang said that it is easy to develop the graphene industry, but it must be relatively calm, can not follow the trend, not simply set the concept, to achieve standardized and orderly development. First of all, there must be a strict definition of graphene. Various carbon products are classified. High-value-added carbon products are worthy of in-depth research and development as long as they are suitable for market demand, but they are not necessarily called graphene.
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