At present, graphene is most reliable in the application of new types of batteries, and more specifically in the application of new supercapacitors. However, it seems that people either consciously or unintentionally have avoided a problem with the mass production of graphene. This is very close to the state of nanomaterials. Many of the special properties of graphene are based on its single layer structure. But in the next few years, I can't see hope in batches of a single layer of graphite with an atomic thickness. In the end, it is very likely to go to such a result: like the nanomaterials of the year, our manufacture of graphene will gradually become a relatively thin graphite sheet structure, as to whether it is a single layer or dozens of layers or more, God knows! (This is how mass production technology of nanomaterials is. We will soon reduce the manufacturing technology of nanomaterials to 100 nanometers. As for the most basic requirements of nanomaterials, that is, the arrangement of their microstructures, who will He!) I have to admit that our ability in the vulgarization of emerging technologies is indeed not small. The domestic understanding and development of new technologies is amazing. But sometimes some problems can't help but worry. A large number of companies using graphene as the name have emerged in Jiangsu. I don't know what they are selling when the mass production of graphene has no shadow. However, people have the ability to sell graphene for tens of millions or more each year. It is said to be mainly used for heat dissipation of LEDs. It can also be imagined with the toes. Their so-called graphene is actually graphite (this thing is inherently even if it is a sheet-like structure, it can be thermally and electrically conductive). It is nothing more than using a gimmick to increase sales and obtain state funding support. Whether this practice is good or bad for the future development of graphene is not known at present. The advantage is that the company uses this method to be a familiar face in the marketing of graphene. The real technology breakthrough, everyone will only be a big surprise. That is to make up the sip, make the momentum, and reduce the difficulty of market acceptance in the future. The downside is that a group of bastards are stirring up a pool of spring water and have a bad reputation. Even if there is really good graphene technology in the future, it is not so eye-catching in the capital market and product market. In that case, it is definitely a disaster for those who are working hard on the development of graphene. Mass production of single-layer graphene is not a problem since 2009 It is chemical vapor deposition on a copper foil substrate. Nowadays, there are a lot of manufacturers selling chemical vapor deposition furnaces for single-layer graphene. And the application of buying graphene as a downstream positive is definitely to do Raman spectroscopy, which is the most basic quality control, no one is as stupid as you said. Raman spectroscopy makes it easy to tell whether graphene is single-layer or multi-layer, and Raman spectroscopy has long been used by domestic manufacturers for cabbage. How can you use outdated and erroneous information to mislead readers who don’t understand the situation? Mass production of single-layer graphene is still a problem Although CVD and various variant CVDs have made great progress in the preparation of single-layer graphene, it has recently been possible to manufacture single-layer graphene single crystals of the order of centimeters. However, from the viewpoint of industrial manufacturing or commercial manufacturing, mass production of graphene still has great difficulties. Difficulties 1: The scale of preparation of high quality single layer graphene is limited by the cavity size of the CVD apparatus. Existing CVD processes have not been able to achieve continuous preparation of single layer graphene. Although the Japanese have shown the so-called graphene of up to 100 meters, the surface of the material has many holes and is completely unusable. The continuous preparation technology of CVD graphene and the product yield problem have not been solved yet. Difficult 2: High-quality graphene transfer method, commonly used wet etching transfer, often brings problems such as wrinkles, impurities, damage, etc., it is difficult to achieve large-scale transfer; many years ago, Korean people engaged in roll-to-roll technology, according to some domestic manufacturers Practice has shown that there are many subtle but difficult problems that can't be used. Difficulties 3: The combination of difficulty 1 and difficulty 2, that is, the continuous preparation and transfer of CVD graphene, the two are matched and docked to form an automated production technology, which has no way out when the first two difficulties are not solved. Difficulty 4: Even if the above three difficulties are solved, graphene does not have many advantages over some existing technologies, such as ITO, such as carbon nanotube film, such as nano silver wire. . Graphene faces a strong competitor, and it is hard to say whether it will win. Difficulties 5: Even if graphene is difficult to solve 4, there is a commercial difficulty: in order to get rid of ITO, the price of graphene must not be high, so the added value of the product is too low, and the profit margin is too low. Difficulty 6: Some people use the name of graphene to fish in the water, hang the sheep and sell dog meat, ruin the reputation of the industry, and ruin the long-term prospects of the industry, which is worrying. The news and exhibitions related to graphene have been too hyped, and many have become the stories needed for capital operation and stock market operations. Some netizens understand the technical achievements, and they tend to regard the propaganda, the theoretical and the ideal state as what actually exists. However, in fact, those who are really engaged in material science research are not enough to be outsiders. A montmorillonite intercalation compound has not really been accepted by the market until now. Is it easy to use high surface energy such as graphene to be stable and use? If the people in the industry are not focused on the subsequent development, but are keen on the concept of hype, and the development of technical resources, the consequences are absolutely catastrophic. How to evaluate a new technology, especially the material science technology, is not easy in itself. It requires a lot of supporting conditions. In fact, many material science and technology achievements require half the effort in the pure application testing. This studio needs a lot of investment. Without adequate capital support and downstream application support, it is basically no play. The breakthrough in materials science relies on many matching conditions. In other words, in fact, the promotion of his achievements is somewhat difficult and fragile. What is brought about by destructive development is the lack of capital's interest in it. This is very annoying. At that time, even if there were good things coming out, lack of matching and matching conditions, it was easy to die. Just like now, if a person invents a technology, the surface agglomeration and growth of the nanopowder can be greatly reduced. At this time, if he wants to raise funds or apply for funds, he faces a very embarrassing situation and may not be applauded. You still underestimate the determination and courage of capital gains, and they can risk the gallows for 100% profit. As long as things are really good, can come to profit, worry that no one invests? The capitalist takes money in minutes to kill you. Mainstay (Guangdong) biotechnology Co., Ltd. , https://www.heyleme.com
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