Graphene should continue to be "hot" or "hot"

Graphene overview

Graphene is a new material that has sp² hybrid connected carbon atoms that are tightly combined into a single-layer two-dimensional honeycomb lattice structure.Graphene has excellent optical,electrical and mechanical properties,and has important application prospects in materials science,micro-nano processing, energy,biomedicine and drug delivery,and is considered to be a revolutionary material in the future.

At present,there is a view that the continued fever of graphene in China has been overdone.According to Zhao Meng,Deputy Secretary-General of China International Graphene Industry Resources Alliance,the market determines whether graphene should continue to be "hot-selling" or "hot-selling".He believes that from a market perspective,China's graphene industry is far from "hot" enough to "reduce heat",but should continue to be "hot".

Graphene is an allotrope of carbon,in the form of a single atomic layer in a two-dimensional hexagonal lattice,with one atom forming each vertex.It is the basic structural element of other allotropes,including graphite,charcoal,carbon nanotubes and fullerenes. 

The graphene industry is gaining momentum.

At present, China's graphene industry is in a leading position, showing a pattern of innovation and competition among tens of thousands of companies. According to the latest statistics of the graphene industry in-depth market research and strategic planning analysis report released by the Qianzhan Industrial Research Institute, China's graphene market is expected to reach 56 billion yuan in 2019 and 236.5 billion yuan by 2022.

China Economic Times:In your opinion,what are the weaknesses of China's graphene industry that need to be overcome?

The first is the imbalance of resources.For example,the Yangtze River Delta in China,the Guangdong-Hong Kong-Macao Greater Bay Area and the Beijing-Tianjin-Hebei region all have advantages in terms of talents, technology and capital. Their technology is developing rapidly, but their environmental capacity is small, and there are few graphite resources that can be developed. However, the three northeastern provinces (Sichuan and Chongqing) and the central and western regions have large environmental capacity and abundant graphite resources, but they lack talents.Technology and capital. How to guide the division of labor and cooperation from the national level and optimize the allocation of resources,the industrial layout remains to be studied.

In recent years,there have been more and more exhibitions and BBSs at different levels in China,and some regions or enterprises have introduced talents and technologies However,the speed and efficiency of the improvement are not fast enough,and the scope and level of cooperation need to be improved.Special attention should be paid to the training,exchange and cooperation of international talents.

The current graphene material smartphone technology has a charge-discharge rate of 40%,which is higher than that of traditional smartphones.Even so fast,it still cannot achieve the ideal graphene material effect.This is Huawei's statement that the Mate20 series has become a graphene-based The reason for the battery,the flexible screen smartphone will also depend on the application of graphene technology.

Battery technology is a huge obstacle to the promotion and development of electric vehicles.If graphene energy storage equipment is successfully developed and mass-produced outside the laboratory,it will bring revolutionary changes to the battery industry and even the electric vehicle industry.However,graphene battery technology still faces high costs and cannot be removed from the experiment. come out. Enter the mass production stage. The optimistic prediction is that large-scale commercial use will explode this year.

Graphene applications

With the gradual breakthrough of large-scale production and large-scale problems,the pace of industrial application of graphene is accelerating. According to existing research results,the first commercial applications may be mobile devices,aerospace and new energy.Battery field.

Graphene has special significance for the basic research of physics.It achieves some quantum effects,which can only be verified by experiments in theory.In two-dimensional graphene, there seems to be no electronic mass. This property makes graphene a rare condensed matter that can be used to study relativistic quantum mechanics,because massless particles must move at the speed of light,which must be described by relativistic quantum mechanics,which provides a new research direction for theoretical physicists.Some experiments that originally needed to be performed in a giant particle accelerator can be performed with graphene in a small laboratory.

Zero energy gap semiconductors are mainly single-layer graphene,and this electronic structure will seriously affect the role of gas molecules on its surface.The function of single-layer graphene to increase the reactivity of the overall graphite surface is due to the hydrogenation reaction of graphene.The results of the oxidation reaction show that the electronic structure of graphene can adjust its surface activity.In addition,the electronic structure of graphene can be induced and changed by the adsorption of gas molecules,which not only affects the change of carrier concentration,but also can be doped with different graphenes at the same time.

Graphene can be made into chemical sensors.This process is mainly accomplished through the surface adsorption properties of graphene.According to the research of some scholars,the sensitivity of the graphene chemical detector can be compared with the limit of single molecule detection.Graphene is unique in that its two-dimensional structure makes it very sensitive to the surrounding environment. Graphene is an ideal material for electrochemical biosensors.Sensors made of graphene have good sensitivity for detecting dopamine and glucose in medicine.

Graphene can be used to make transistors.Due to the high stability of the graphene structure,this type of transistor can still work stably on a scale close to a single atom.In contrast,current silicon-based transistors are about 10 nanometers,and the stability of the oxide scale will be lost.The ultra-fast reaction speed of the electrons in graphene to the external field allows transistors made of it to reach extremely high operating frequencies. For example,IBM announced in February 2010 that the operating frequency of graphene transistors has been increased to 100 GHz,which exceeds The operating frequency of silicon transistors of the same size is calculated.

The research and application development of graphene continues to heat up.Graphene and graphene-related materials are widely used in battery electrode materials, semiconductor devices,transparent displays,sensors,capacitors,transistors,etc.As well as their potential application value,a series of important progress has been made in many disciplines such as chemistry,materials,physics,biology,environment,and energy.Researchers are committed to trying different methods in different fields to prepare high-quality large-area graphene materials.And by continuously optimizing and improving the graphene preparation process,the cost of graphene preparation has been reduced,so that its excellent material properties have been widely used and gradually moved towards industrialization.

Graphene is expected to become a new generation of equipment in many applications.In order to explore the broader application fields of graphene,it is necessary to continue to seek more excellent graphene preparation processes so that it can be used for better applications.It has not been confirmed until today that it has existed for only twelve years,but it has become a hot spot among scholars this year.With the continuous development of graphene preparation methods,its excellent optical, electrical,mechanical and thermal properties have prompted researchers to continue to study it.Graphene will surely be more widely used in various fields in the near future.

Graphene price

The price of graphene varies randomly with production costs,transportation costs,international conditions,exchange rates,and market supply and demand.Tanki New Materials Co. Ltd aims to help all industries and chemical wholesalers find high-quality,low-cost nanomaterials and chemicals by providing a full set of customized services.If you are looking for graphene materials,please feel free to send the latest price inquiries.

Graphene supplier

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