The graphene transparent conductive film is less than millimeters thick and can be bent at will. It will be widely used in mobile phone touch screens and other aspects. Smart phone soft screens and flexible LCD panels may enter people's lives in the near future. Experts and entrepreneurs participating in the meeting also pointed out that although the "graphene era is coming", "graphene preparation technology and high prices" are the "bottleneck" restricting its marketization. The establishment of the Graphene Industry Technology Innovation Alliance may break these "bottlenecks."
Foldable and fast charging can not only change the phone
"In the future, these will be widely used in computers, mobile phones, electric blankets, floor heating, etc.," said the person in charge of a graphene production enterprise in Deyang during the introduction of related products. Graphene heating film can be used for electric blankets and floor heating. , Airport runway deicing, greenhouse heating, graphene thermal grease is used for heat dissipation of computers and other items, graphene anticorrosion mother liquid is used for anticorrosion projects such as ships, containers, and municipal engineering, graphene transparent conductive film will be used for mobile phone touch screens, etc. .
Why don't graphene batteries have industrial applications?
During the visit, people discovered that industrial materials that were originally far away from themselves can be so close to themselves, and the feeling of experiencing black technology at close range can be so good. In the display, a transparent film attracted people's attention. Guo Anxian, the head of the R&D company, said that this transparent film that is less than a millimeter and can be bent arbitrarily is a graphene conductive film, which will be widely used in touch panels and flexible LCD panels of mobile phones and tablet computers. "Flexible soft screen mobile phones It’s not a legend. As long as you want it, you can do it.†Guo Xiaoping, chief engineer of a lithium battery manufacturer, said that graphene has obtained good experimental results in the production of lithium batteries. “The charging speed is more than doubled and the battery life is increased by ten. Times more."
Reserves account for 40% of the country's preparations and begin to take shape
At the end of March, a graphene production company in Deyang with an annual output of 30 tons of graphene powder production line will be put into operation, and as early as last year, Suining Daying has built a 10 tons of graphene powder production line, graphene preparation has begun to take shape in Sichuan. Tian Yunhui, deputy director of the Sichuan Provincial Department of Science and Technology, said that Sichuan graphene research and development has a good foundation. Deyang is the first city in China to engage in the large-scale preparation of graphene, and has achieved several major scientific and technological achievements, some of which are at the world's leading level. The first large-scale graphene industrial park with a high level in the province. Other cities have also actively promoted the research and development of graphene. For example, Suining is developing graphene conductive paste and promoting graphene to achieve better results in industrial applications such as new energy and electronic information materials.
Tian Yunhui said that Bazhong, Panzhihua and other places in our province have rich graphite resources, which can provide sufficient raw material guarantee for the development of the graphene industry. "The province’s proven graphite mines account for 80 million tons, accounting for 40% of the country’s total, and have vigorously developed Industrial advantages. In addition, there is a huge demand for graphene materials in the fields of new energy, electronic materials, and material anti-corrosion in our province, which is an important driving force for the development of the graphene industry."
Immature application technology restricts market space
So, since graphene can effectively improve battery charging and life issues, why not scale industrial applications? Guo Xiaoping said that the main issue is the cost. “In the past, the price of graphene was more expensive than gold, so it was called'black gold'. Now it still costs dozens or hundreds of yuan per gram. A mobile phone battery requires three to four grams of graphene. , The cost increase can be imagined.
The reporter learned that although the graphene production line with an annual output of 30 tons in Deyang is about to be put into operation, it may not be able to run at full capacity due to market problems. The person in charge of the company told reporters that downstream application companies have not yet been found. In this regard, a graphene preparation company in Suining Daying also expressed the same view. Last year, the company built a 10 tons graphene powder production line, but the annual sales volume was less than 100 kilograms. After sending out 30 kg samples, a company in Chengdu finally got a 3 kg order, which was still from Italy.
"The biggest problem in the development of graphene is the application bottleneck." According to Professor Chen Guohua of Huaqiao University, the reason why companies rarely use graphene in actual applications is because the core R&D personnel of the company do not yet understand graphene. The bottleneck of graphene's market application also lies in the variables of graphene itself. "The same preparation method produces different results in different environments. Therefore, it is a big difficulty to apply it to products."
Li Jiaming: The global big industry should start with a big pattern
How to solve the "obstruction" in Sichuan graphene application? The first plenary meeting of the Sichuan delegation of the Fourth Session of the Twelfth National People's Congress was held in Beijing. The reporter passed the company's question to Li Jiaming, a representative of the National People's Congress, an academician of the Chinese Academy of Sciences, and director of the Tsinghua University Atomic, Molecular and Nanoscience Research Center. Li Jiaming is one of the earliest experts to study graphene in China. He suggested that on the basis of the established industrial technology innovation alliance, a top-notch "staff" should be established, and academicians and domestic first-class experts in the fields of chemical industry and chemical fiber from the two academies should be invited to collide. Think about the direction more clearly. At the same time, it is necessary to do everything possible to reduce the cost of the product. After the enterprise is truly profitable after application, it will naturally increase the application. This is a market choice, rather than simply relying on publicity.
In order to get a more satisfactory answer to the question, representative Li Jiaming called Kong Xiangyang, a distinguished professor of Shanghai Jiaotong University and director of the Research Institute of Automotive Power Battery Materials, who worked with him on graphene in 2004. "Strictly speaking, graphene is a single-layer carbon six-membered ring structure, but the current industrially produced tons of carbon products called graphene cannot meet such requirements." Kong Xiangyang pointed out that strictly speaking these are only carbon product upgrades. Versions, like "industrial MSG", are used in conductive agents and other fields. The real graphene is still in the technical research stage.
Kong Xiangyang said that he is happy to see results in the development of the graphene industry, but he must remain relatively calm, not follow suit, not simply use concepts, and achieve standardized and orderly development. First of all, it is necessary to have a strict definition of graphene. It is necessary to classify various carbon products and various high value-added carbon products, as long as they are suitable for market demand, they are worthy of in-depth research and development, but they do not have to be graphene.
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