Chinese graphite alkene development condition inventorying, patent leading whole world

Graphite alkene(Graphene) is strips from the graphite material, is composed of the carbon atom has an atomic thickness the two-dimensional crystal. in 2004, British Manchester University scientist Andre Heym and Constantine Woxiao Love stripped from the graphiteGraphite alkene, since has broken the theoretical physics educational world half century aboutGraphite alkeneIs unable conclusion which exists stably.

Graphite alkene unique electricity performance, mechanical properties, thermal properties, optical quality and high compared to surface area, enables its one to pass through the detection then to receive people's broad attention, by the reputation is “the coal”, “changes the 21st century the mysterious materials”, “the multi-purpose materials” and so on, its finder also therefore wins the Nobel physics prize in 2010.

The policy boost, the industrial production step accelerates quietly

1st, the country supports vigorously emergent industry

The graphite alkene various aspects outstanding identity displayed the huge application potential and the commercialization value, various countries' government releases the policy investment manpower and resources successively, the development graphite alkene application and the research and development.

Our country already has also given the attention to the graphite alkene domain's research and the development. 2007-2012 year, China National Natural Science Foundation of China amounted to 3.30 hundred million Yuan to the graphite alkene project accumulation subsidization funds, the technical department and the Chinese Academy of Science has respectively amounted to 5915 ten thousand Yuan and 4605 ten thousand Yuan to the graphite alkene accumulation subsidization funds. 35 plans, 45 plans and so on a series of files integrate the graphite alkene the new material domain which develops vigorously.

2nd, the graphite alkene patent has our country to lead the field

Under the national strategy direction, the graphite alkene related research and development achievement presents the eruption type to grow, from 2005 to 2014, the whole world altogether has 25,855 items about the graphite alkene's patent, in 2014 has surpasses 9000 applications. Our country and international has held a synchronization to the graphite alkene's research and the development, and is in the international front row in the graphite alkene technology research and development aspect, the graphite alkene research and development and the patent has already in the global hold small space, up to 2014, our country graphite alkene application patent occupies the global total number of patents 47%, leads (occupies in the second US compares 18%). In addition, cuts off August, 2015, China publishes the article in the graphite alkene domain to occupy the whole world 34%, is higher than the second US far (19%). But simultaneously should also see that although, our country's graphite alkene patent quantity many, but the quality is bad, the foundation patent few, the application patent are many, and mostly concentrates in the electric conduction chemical additive, the antiseptic paint and so on low end application domain, but US, Europe and so on essential target high-end application domains and so on aiming high frequency transistor, photo detector as well as sensor.

3rd, the industrial production enters the speedway

The industrial production aspect, in 2013 including Hua Wei, east rising sun scientific research institutions and so on photoelectricity's mainstream enterprise and Tsinghua University has established “the Chinese graphite alkene industry technological innovation strategic alliance” together (CGIA), constructs produces study grinds the integrated platform, impels the graphite alkene together the industrial production development. Under Local authority's support, Ningbo, Changzhou, Wuxi, Qingdao, the Chongqing five places set up the graphite alkene industry campus, the centralism development graphite alkene industry, Wuxi plan in 2015 the graphite alkene and the related industrial scale top 50 hundred million Yuan, in 2020 amounts to 300 hundred million Yuan. Ningpo plans in three years sets up 9000 ten thousand financial fundses, and makes 100,000,000,000 levels of scales in 10 years the industrial special color groups. In addition, places such as Jiangsu, Inner Mongolia, Shandong establish the graphite alkene alliance one after another, is for the purpose of promoting the politics, business, to produce, to study, grinds unifies, constructs take the graphite alkene raw material, the research and development, the preparation, the application as the main body industrial chain. All quarters impetus together causes our country graphite alkene industrialization process to enter the speedway, the graphite alkene industry presents the vigorous development the tendency, west the sixth element, the Ningbo ink, Chongqing ink hope, the two-dimensional carbon and so on outstanding graphite alkene enterprise emerge unceasingly.

The industrial production act drop unzipped - - the low end domain already to cut into, the high-end domain future may the time

1st, preparation: The graphite alkene powder body and the polytropism thin film has begun to take shape, the unit crystal thin film waits for breaching

Since 2004 the graphite alkene is prepared for the first time, the researchers have developed many kinds of method preparation graphite alkene, each category of preparation method may induce is 2 mainstream paths, namely from the top downward (Top-Down) and from bottom to top (Down-Top) method. The former usually take the graphite as a raw material, uses physical either chemistry method dissociates single-layer the graphite or the multi-layered graphite alkene, makes the graphite alkene unit crystal general size is small, by microchip form existence. Including machinery peeling law, liquid phase peeling law, oxidation-reduction method and so on; The latter usually take contains the carbon gas or the solid compound as a raw material, through chemistry method use carbon atom construction graphite alkene. In addition, but also has some comparison in addition category of production method like carbon nanometer tube method of development, the molecule from the assembly law and so on. At present, the high grade big area graphite alkene unit crystal's preparation is also at the exploration phase, prepares the graphite alkene differently which the method obtains, its physical chemistry identity is dissimilar, is corresponding the different application domain.

2nd, our country graphite alkene preparation industrial production present situation

The low end domain production already began to take shape. At present, west the domestic partial factory like sixth element, the Ningbo ink, Chongqing ink hope that factories and so on two-dimensional carbon had already implemented the oxidation-reduction method or the liquid phase peeling law graphite alkene powder body as well as the CVD law graphite alkene thin film formalization production. According to the incomplete statistics, our country graphite alkene powder body produces at present can the total 3450 tons/years, the graphite alkene thin film produce can 105 ten thousand square meters/years, but the present production's graphite alkene quality is bad, can satisfy the coating, the lithium battery chemical additive, the compound materials chemical additive, the touching screen only and so on low end domain demand.

In the high-end domain production short-term is difficult to breach. High-end domains and so on high-velocity electron component, photo detector need the big area high grade graphite alkene unit crystal, compares with the ordinary multi-crystalline state graphite alkene thin film, the unit crystal graphite alkene thin film preparation is exceptionally difficult, at present can achieve the millimeter level size only, with the wafer level size which may make practical still had is quite away from, in the short-term is difficult to breach, chemistry gas phase sedimentation is most has the development potential the preparation technology.

3rd, application: The low end demand opens gradually, the high-end domain is restrained the high grade graphite alkene preparation

Along with difficult problem and so on batched production as well as great size thin film preparation gradual breaches, the graphite alkene's industrial production application step is speeding up, at present the lithium ion positive electrode material electric conduction chemical additive, the heat conduction material, the plastic additive, the electric conduction printing ink and so on low end application domain soon entered or already implemented the industrial production. Our country graphite alkene industry is marching into the fast growth period gradually by the industrial production initial period.

4th, graphite alkene downstream application industrial production present situation

The low end demand opens initially. Is restrained in the graphite alkene formalization preparation, at present only the electric conduction ink, the lithium battery chemical additive, the coating and the compound materials chemical additive, the touching screen and so on low end application domain's demand opens initially.

1) the lithium battery aspect applies

The graphite alkene may also solve positive electrode material high pressures and so on cobalt sour lithium as the electric conduction chemical additive full-sizedly with the battery performance between contradictory question, uses the graphite alkene electric conduction agent the cobalt sour lithium battery capacity to be higher than 3%, and has obviously the better 2C percentage electric discharge performance. The graphite alkene may also the spreading on the aluminum foil set fluid, form the graphite alkene functional coating aluminum foil to be helpful to further promotes lithium battery's overall performance. Along with the Ningbo ink west technical Limited company graphite alkene coating aluminum foil trial production line's completion, this new technology obtains the broad application hopefully in the lithium ion battery.

Is worth mentioning, took the chemical additive, the graphite alkene strengthened the positive electrode material electrical conductivity merely, has not changed the electrode material the specific capacity, will thus not add lithium battery's energy density largely. Must want to add the lithium battery energy density largely, must select has the higher specific capacity electrode material. At present, many had published a paper saying that positive and negative may add lithium battery's energy density greatly extremely using the graphite alkene - sulfur or the graphite alkene - silicon as the lithium battery, but this category of battery is also at the laboratory phase at present, is away from the industrial production application also to the long time.

2) graphite alkene heat conduction material

The graphite alkene has the extremely high heat conductivity and the heat radiation coefficient, simultaneously is huger than the surface area, therefore takes the auxiliary radiation the top coat to have the huge application foreground. May make using the graphite alkene has the high thermal conductivity graphite alkene radiator fin/membrane, applies in electronic products as well as in the high power LED chip and so on handset, computer, strengthens the component performance, lengthens its working life. In addition, may also make the graphite alkene modified as the chemical additive using the graphite alkene compound materials, like heat conductivity textile fiber and heat conduction plastic and so on. This area of technology market is huge, has the urgent market demand in our country's electron and the project domain, the technical difficulty small, the craft is relatively mature, has enters the market fast the opportunity.

3) graphite alkene conductive plastics and printing ink

The graphite alkene may take the new electric conduction printing ink and the plastic main stopping, may also with mixes and so on nanometer aluminum dusting powder compound the new electric conduction pulp or the printing ink, through the change graphite alkene's packing proportion, may adjust electric conduction printing ink the electronic resistivity and the adhesion property. The American Vorbek Material Company's graphite alkene electric conduction printing ink already started in the thing networking stealth bar code technology to apply. Our country networking market is huge, the foreground is attractive, adds the graphite alkene conductive plastics primarily to be possible to obtain the promotion easily in against static electricity application domain, the craft, the cost inexpensive, the effect is vigorously obvious.

4) graphite alkene antiseptic paint

The graphite alkene unique two-dimensional structure causes it both to be possible to construct the electric conduction heat conduction channel in the coating, and may splice mutually forms the strict labyrinth type physics barrier, the isolation corrosion factor. Therefore, the graphite alkene coating has the electric conduction, the heat conduction, the anticorrosion, the electromagnetic screen and so on many kinds of functions. Moreover, the graphite alkene microchip may strengthen the coating the adhesion, enables the coating to have fine wear-resisting and bears blows scratches the performance. Therefore, the graphite alkene coating in the airplane, the ships, the vehicles, the bridge, the building, the container, the oil pot, and so on domains has the application foreground.

5) graphite alkene electric capacity screen

The graphite alkene thin film first implements the commercialization application domain touches the screen domain, uses in substituting traditional ITO (indium oxide tin) the thin film. on January 8, 2012, the south of Yangzi River graphite alkene research institute, Changzhou two-dimensional carbon science and technology company joint dependence enterprise has implemented the graphite alkene membranous material and existing ITO mold train craft line docking through the research, the whole world succeeds for the first time makes the graphite alkene electric capacity screen handset prototype. on March 2, 2015, Chongqing ink hoped the technical Limited company and the fine happy faction science and technology Limited company had released jointly the global first batch 3 ten thousand graphite alkene handset, this section of handset has used the newest development graphite alkene touching screen, the battery and the heat conduction membrane, has opened the graphite alkene industrial production application new times.

The industry soon enters the fast growth period, the future market scale will be huge

Next in 5-10, the electric conduction chemical additive, the antiseptic paint, the touching screen and so on low end application domain's industrial production will tend mature, the super electric capacity, the sensor, the electronic chip in and so on high-end domain gradually will also enter the industrial production, the graphite alkene industry will enter the fast growth period, the market space fast will expand.

According to the predict that in 2018 the global graphite alkene market size reaches as high as 1.95 hundred million US dollars possibly, afterward will accelerate to develop, surpasses 13 hundred million US dollars in 2023, the compound rate of increment reaches as high as 47%. in 2023 graphite alkene downstream staple market domain including super electric capacity, display, structural material and so on.