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March 12, 2022
Graphene is known as "black gold", "the king of new materials", even known as "black technology that completely changes the 21st century". Research around graphene has been going on, especially in energy batteries. In particular, the rise of smartphone battery life and new energy electric vehicles has accelerated the application of graphene in this area.
Recently, news such as "the graphene battery with a battery life of driving 1,000 kilometers after charging for 10 minutes" has appeared, which has ignited people's hopes. However, at the 2nd International Conference on Carbon Materials, graphene experts told the truth: the one-sided emphasis on fast charging and fast discharging is just an academic statement, and it is still far from the real application. Graphene will contribute to batteries, but the so-called disruptive changes have not yet been seen.
Except the application, the preparation of graphene itself still has very serious problems, the preparation is difficult, and the preparation process produces serious environmental pollution. question. What's more, experts say graphene standards haven't even been worked out yet, and no consensus has been reached.
Graphene can strengthen country or just a foam?
Graphene is known as "black gold", "the king of new materials", and even known aGraphene is known as "black gold", "king of new materials", and even known as "black technology that completely changes the 21st century". Research around graphene has been going on, especially in energy batteries. In particular, the rise of smartphone battery life and new energy electric vehicles has accelerated the application of graphene in this area.
Recently, news such as "the graphene battery with a battery life of driving 1,000 kilometers after charging for 10 minutes" has appeared, which has ignited people's hopes. However, at the 2nd International Conference on Carbon Materials, graphene experts told the truth: the one-sided emphasis on fast charging and fast discharging is just an academic statement, and it is still far from the real application. Graphene will contribute to batteries, but the so-called disruptive changes have not yet been seen.
Except the application, the preparation of graphene itself still has very serious problems, the preparation is difficult, and the preparation process produces serious environmental pollution. question. What's more, experts say graphene standards haven't even been worked out yet, and no consensus has been reached.
s "the black technology that completely changes the 21st century". The reason why it has such a reputation is that graphene is the first new material discovered by people with a single-layer sheet structure composed of carbon atoms. Due to the special arrangement of carbon atoms, graphene has some very magical properties: graphene is not only the hardest material in the world, but also has strong flexibility; it also has high thermal conductivity and ultra-fast carrier migration Rate.
Whichever of these characteristics is applied will be a technology that subverts the current industry: for example, the transparency, conductivity and flexibility of graphene are applied in the field of electronic devices, and a flexible touch screen can be realized, and a mobile phone can be folded like a watch; The impermeability and conductivity of graphene can be applied to protective coatings and barrier films; the flexibility, transparency and high sensitivity response of graphene to various physical signals can be used to make sensors, which can be used in multifunctional electronic skins; Graphene is used as electrode material to improve the performance of energy storage devices.
Any kind of application can be said to be a subversive revolution. In an interview with the media, Ren Zhengfei, the founder of Huawei, said that a technological revolution will break out in the next ten to twenty years. The era of graphene will subvert the era of silicon, and graphene is the forefront of the technological revolution.
Therefore, in the past ten years of graphene development, there have been many companies that have studied "graphene" in my country, and even promoted the growth of graphene concept stocks. Shen Wanci, a professor at Tsinghua University, said: "my country has the world's largest natural graphite industry, and it is also at the world's advanced level in terms of graphite mining technology and equipment. The graphite industry in Tanzania, Russia, Vietnam and other countries seeks to introduce mining technology and equipment from my country. It is moving from a graphite country to a graphite power.
In terms of quantity, my country's graphene enterprises have also experienced explosive growth: the "2016-2017 China Graphene Development Annual Report" released by the China Economic Information Service shows that since 2016, there have been more than 700 new graphene enterprises in my country. , of which R&D enterprises account for about 43%.
But for this phenomenon, Liu Zhongfan, an academician of the Chinese Academy of Sciences and a professor of the School of Chemistry of Peking University, believes that there has been a mass movement of "swarming up" in the development of China's graphene industry, similar to the steel-making operation during the "Great Leap Forward" period. When he accepted The Paper, he concluded: There are many abnormal phenomena in China's graphene industry. The stock market is blindly hyping, using graphene to make money in the name; local governments are blindly launching their horses to build industrial parks; there are also a group of irresponsible graphene players speculating on the concept.
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