
What is passive element? What is the role of passive electronic components in the circuit?
What is passive element? What is the role of passive electronic components in the circuit?

What is passive element? What is the role of passive electronic components in the circuit?
What is passive element? What is the role of passive electronic components in the circuit?

What is passive element? What is the role of passive electronic components in the circuit?
What is passive element? What is the role of passive electronic components in the circuit?

The National Inspection Center helps to solve the suspicion of the graphene industry
Since its inception, graphene has been promoted to the height of national strategic development with its strong performance and potential. Its development level has a high degree of correlation with the overall economic strength of the country, scientific research investment, and resource endowment. However, at present, the research on graphene -related research is mainly concentrated on its development overview. There are many problems in the current technology research and development of graphene, capital speculation, and product marketization. The transformation process is very difficult and is a major problem in the development of graphene.

What are the harm of graphene to the human body
Today, the editor of graphene manufacturers summarizes the harm of graphene to the human body on the Internet. Many people want to know the graphene material and need to use graphene. When graphene sticks to the skin, it will feel itching in a while. Then, the skin with graphene will appear red dots. For acupuncture pain, some people asked the harm of graphene to the human body.

How much is the price of graphene, just see it?
Graphene is very widely used in industry. It is called "industrial monosodiuman" in various industries. It can also achieve high -quality results. A winning universal additive. At present, the high sales volume on the market is the two types of graphene powder and graphene paste. Different specifications of graphene powder and graphene paste. The market price is naturally different. What is the price per gram of graphene? How much is the price of graphene and what do you need to know about knowledge? There are many speaking prices of graphene, and different specifications and models are different. The following editor of the carbon technology summarizes the different knowledge on the Internet to see how much gram of graphene is the price? There are many models of graphene, and the parameters of each model are different. Common single -layer graphene multi -layer graphene and multi -layer graphene. The purity is generally 95 ~ 99.5%. It depends on the requirements. The price is tens of yuan to hundreds of yuan per gram. Many graphene oxides on the market are sold as graphene. The cost is low, but it is not graphene at all. How much is the price of graphene? At the beginning of the past few years, it was about 3,000 yuan/gram. Later, it was more than 2,000 yuan/gram. Later, it was more than 3,000 yuan/kg. To more than 1,000 yuan/kg. At present, the price ranges from 80-1500 yuan/kg. The specific price depends on the number of layers. Single-layer or multi-layer, single-layer expensive, multi-layer cheap. And it is also divided into oxidation reduction or mechanical stripping method. Graphene price saying two According to the market market in 2019, some low -purity and poor quality graphene are priced at tens of yuan. And some high -purity graphene can buy more than 5,000 yuan per gram. As a two -dimensional carbon nanoma material, graphene is currently in the market. It mainly uses gram to do the dependency unit. Depending on the purity, the price of graphene is also different. Graphene has excellent optical, electrical, and mechanical characteristics, and has important application prospects in terms of material science, micro -acceptance processing, energy, biomedical and drug transmission.

What are the advantages and disadvantages of graphene floor heating?
What are the advantages and disadvantages of graphene floor heating? The graphene industry is an industry that has only emerged after 2014. Graphene floor heating is also just emerging in recent years, and many people do not particularly understand graphene floor heating. The price is slightly higher than other methods of heating, and its heating effect is still very good. Today, I will introduce the advantages and disadvantages of graphene floor heating. First of all, understand the graphene floor heating. 1. What is graphene floor heating 1. Graphene floor heating is a graphite as a raw material. It is a crystalline material. In 2004, this technology has been developed. The graphene is separated from the graphite. This is also a major discovery in science. 2. Graphene has the function of conductivity and thermal conductivity, so it is used as floor heating, which has completely changed the way people's heating. In the market, its development space is still relatively large, mainly because of the work of graphene floor heating, as well as far -infrared light, which can regulate the human body, so it has the function of health. Second, the advantages of graphene floor heating 1. Graphene is warm, comfortable and healthy, and strong health. Very energy -saving, because it can use the indoor temperature controller, people can adjust themselves, so that the indoor is in a constant temperature and has a very energy -saving effect. Floor heating belongs to the ground radiation heat dissipation. Pipes under the indoor surface, and then use water as a medium to circulate the surface. There are two aspects of the benefits of this heat dissipation method. On the one hand, the feeling of warm feet is warm, which can improve blood circulation, promote metabolism, and meet the health standards; on the other hand, the heat rises from the surface, which can destroy the living environment of parasites such as mites such as mites , Sterilize the ground, rising heat will not cause dirty air to flow, healthy and comfortable. 2. Environmental protection. There is no exhaust exhaust when the graphene floor heating is used, so it will not cause pollution to the environment, and it also meets the environmental protection needs launched by the country. Graphene is warm and energy -saving, and has good stability. Although water floor heating needs to be heated for a long time, because there is a thermostat, you only need to control the temperature after heating, and consume less power. It is about 30%more energy than electric floor heating and heating tablets. At the same time, the water floor is warm with water as the heat media, and the stability is good. 3. The heating speed is relatively fast. If the traditional hydropower heating or electric floor heating is used, the speed is slow, but the graphene floor heating is relatively fast because of the good thermal conductivity. 4. The service life is relatively long. If the family is installed with graphene floor heating, generally, the service life can reach 50 years, and the safety factor is high. And there are few problems during use. Some graphene brands will also have a warranty period, so you can use it with confidence. Water floor heating is basically the same life span as the building. When used, there is basically no safety problem. The long life of water heating has greatly reduced the problem of ordinary heating equipment due to the problem of service life, and saves additional costs incurred during the second replacement. 5. Graphene floor heating saves space and beautify the room. Water floor heating is installed underground. After the installation is completed, only a beautiful thermostat is exposed on the wall. Many families now have installed heating films. Although the appearance has been improved in recent years, it is more exquisite than before, but after a long time, it will inevitably be outdated and affect the beauty of the overall home style.

What are the graphene companies?
The industrialization of graphene in 2020 is still in the development period and further breakthroughs. However, in order to truly realize the production scale of industrialization and realize the huge value of graphene, it is necessary to further standardize graphene standards and solve problems such as graphene preparation technology, graphene transfer technology, and downstream industrialization applications. Let's take a look at the top ten listed companies in graphene today? List of domestic graphene leading companies Fangda Carbon: Asia's largest carbon product production and supply base company has a comprehensive production capacity of carbon products, with a comprehensive production capacity of 230,000 tons, of which graphite electrodes and carbon new materials are 200,000 tons and 30,000 tons of charcoal bricks. Fangda charcoal is based on the equipment and technical level of each subsidiary, complementary advantages, standardized production, and division of labor. It can produce the varieties and specifications of graphite electrodes and carbon products required by customers at home and abroad. Leading products include ultra -high power, high power, ordinary power graphite electrode; special graphite products, biocham products, charcoal felt and charcoal/charcoal composite materials, etc., the products are widely used in metallurgical, chemical, machinery, medical, biological, biological, biological Wuling in industries and high -tech fields. The company obtained the patent of the method of preparing graphene with limestone as the raw material. Liche shares: indirect participation in two -dimensional carbon Lihe shares to participate in Changzhou Two -dimensional Carbon Technology Co., Ltd. Two -dimensional carbon is located in the Changzhou Wujin Economic Development Zone. It is a major research and development and manufacturing enterprise specializing in large -scale graphene transparent conductive film and graphene capacitive touch modules. The two -dimensional carbon technology team took the lead in publishing chemical gas deposition method in 2008 to synthesize graphene. For the first time, the world successfully grown up a macro -large -scale high -quality graphene film. In January 2012, the world's first graphene capacitor touch screen was released. In May 2013, the annual production of 30,000 square meters of graphene film production line was completed and put into operation. Sales. The company is expected to reach the production capacity of 200,000 square meters of graphene film materials in 2014. Baoan, China: Betry, a holding subsidiary, is the world's largest lithium -ion battery negative material supplier Shenzhen Bateri New Energy Materials Co., Ltd. is a professional manufacturer of positive, negative electroded materials and nano applications dedicated to lithium ion secondary batteries and nano applications controlled by Baoan Group. The company integrates basic research, product development, production, sales, and providing solutions -body. The Betry Branch was established in Jixi, Tianjin, Shanxi, Huizhou, etc. The company is the world's largest lithium battery negative material supplier. It is the only company in the world with the complete value industry chain of the negative electrode material. The company's customers include Samsung, LG, Japan Sanyo, BYD, etc. In 2011, the company completed the construction line construction and process optimization of the graphene project, and the daily output of graphene reached a kilogram. Jinlu Group (Deyangne Carbon): In the early stage of developing graphene companies with the Institute of Metals of the Chinese Academy of Sciences (June 31, 2011 to December 31, 2013) And the development of power battery electrode materials. On December 22, 2013, the company and the Institute of Metal of the Chinese Academy of Sciences signed the "Technical Development Contract". The two parties decided to continue cooperation in the research and development of graphene materials and its application technology and industrialization technology. R & D. New Materials of Pyrane Carbon: Successfully transformed to the field of carbon carbon new materials since 2013, new materials for carbon carbon have been replaced by assets, and the main business has been transformed from real estate development to new materials for carbon carbon. The company's current main business: graphite products, graphene and nano -carbon, carbon products, refractory materials, active carbon products, new materials for carbon carbon, rare earth carbon -based composite materials, mineral products, metal and non -metal materials, Development and technology transfer of carbon carbon new materials, urban infrastructure investment, etc.

Scientists overcome the technical bottleneck, the new graphene battery came out, and the sodium battery capacity increased by 10 times
Because graphene has the characteristics of light quality, high strength, and strong conductivity, graphene has been regarded as a key material for improving battery charging speed and promoting battery technology progress. But in fact, as a new material, graphene has been invented for only 10 years. At present, graphene is not only unable to massage large -scale, but also has immature technical problems, and the cost is very high. Although many manufacturers in the market are hype the concept of graphene battery. On January 15 this year, GAC Ean once stated that the company has developed graphene -based super fast battery, and claims that this battery has "Super fast charging+ charging+ charging+ The characteristics of ultra -long battery life+super security ". However, after this publicity poster was released, GAC was hit hard by many people in the industry. Ouyang Minggao, an academician of the Chinese Academy of Sciences, publicly stated, "If anyone tells you that electric vehicles can run 1,000 kilometers, it can be fully charged in a few minutes, and it is very safe. He must be a scammer." The result also proves that Ouyang Minggao's judgment is wrong. GAC Ean does have problems in propaganda, and its characteristics do not refer to a battery. This case made domestic users clearly realize that graphene batteries will not appear in the market in a short period of time. Of course, in the long run, graphene batteries are still worth studying products. It is undeniable that when graphene is used as a battery conductive, it can indeed increase the battery energy density and charging power multiplied rate to a certain extent. Although the ideal graphene battery has great difficulties, the use of graphene materials to help traditional batteries be upgraded. This set of solutions actually has a very high feasibility. At present, with the advantages of low cost and strong adaptability, sodium ion batteries are likely to complete alternatives to lithium ion batteries in the future. However, the energy storage capacity of sodium ion battery is relatively weak. If it wants to achieve popularity in the market, it is inevitable to use graphene help. In fact, scientists have been trying to integrate the above two materials in the battery. Moreover, scientists have recently achieved technological breakthroughs. On August 26, the Financial Association reported that scientists at the Charmers Institute of Technology, Sweden developed a new type of graphene material -Janus graphene. Members of the research team said that a molecular interval is added to the side of the new graphene layer. When these layers are stacked together, the molecules can create a larger space between graphene. The battery capacity has been greatly increased. It is reported that using the new Janus graphene instead of graphite, scientists successfully achieved a capacity of 332mAh/G in experimental sodium batteries. This is about 10 times higher than that of the natoba designed with traditional ideas. The success of this research has been published in the magazine of Scientific Progress. Although in the short term, the new graphene battery has a long way to enter the mass market from the laboratory, but considering that the current industries are looking forward to the emergence of new battery technology, and as the scale of the battery market continues to expand, more and more and more and more and more and more and more are increasingly expanded. Capital has poured into the battery industry. In my opinion, the new graphene battery may not allow users to wait too long.

Get sure! Huawei adds yield graphene technology, the new storm comes
Graphene is the material with the highest intensity, the best toughness, the lightest quality, and the best conductivity at present, and is also considered to be one of the most likely to be developed in the future. However, because of the high technical difficulty, it has not yet been widely used. Huawei, the leader of the industry, dares to add graphene technology again for the industry. And recently received the likes of the Ministry of Industry and Information Technology, a new material and new technical storm may open it! Recently, the Ministry of Industry and Information Technology published an article entitled "Graphene thermal control materials for innovative applications in Huawei 5G products", which directly praised Huawei, fully showing the recognition of the Ministry of Industry and Information Technology's new technologies for Huawei's innovation application. As mentioned in the article, after the first application of Huawei Mate20X in Huawei Mate20X, Huawei again released the first domestic 5G tablet Huawei MatePadPro5g, which is also equipped with ultra -thick 3D graphene cooling technology. At the same time, the Ministry of Industry and Information Technology has also interpreted the role of graphene materials and future development prospects. It is believed that the advantages of high -definition wizard thermal film for multi -layer graphene stacking. The importance of electronic equipment development continues to increase, and it is believed that graphene is expected to rapidly expand the application in electronic equipment heat dissipation solutions. So, as ordinary consumers, what can we feel graphene technology from aspects? Take Huawei Matepad Pro 5G as an example. As the industry's first tablet with ultra -thick 3D graphene cooling technology, Huawei Matepad Pro 5G has a built -in 3D graphene total thickness of 400um. Architecture, SOC multi -directional heat dissipation and temperature control, supplemented by AI thermal management intelligent perception to adjust the body temperature, which can maximize the heat dissipation performance of the tablet, allow the SOC performance to achieve the ultimate play, and ensure performance and battery life. When you are playing games, watching videos, and even using cloud computer function editing videos, Huawei Matepad Pro 5G will not have an overheating phenomenon. With the high performance of the 7nm+ EUV process process Kirin 990 5G SOC chip, the tablet can adapt to more application scenarios, not only for watching dramas and playing games. In fact, as early as 2012, Huawei began the in -depth research and development of the graphite heat dissipation structure, and in 2015, Huawei 2012 laboratory launched this technology industry cooperation, which is committed to landing graphene technology. Today, Huawei has applied graphene film on the Mate20X mobile phone, and is equipped with ultra -thicker 3D graphene cooling technology on Huawei Matepad Pro 5G. Huawei is gradually adding graphene technology and also achieved joy. Graphene technology is the direction of future development, but the cost of use and R & D is very high. As a comparison, the traditional heat dissipation scheme includes graphite, aluminum alloy, copper architecture, etc., which looks lower and easier to achieve. Why do Huawei still challenge the new material of graphene? The future development prospects are very considerable, and they have many advantages compared to traditional heat dissipation solutions. Combined with Huawei Matepad Pro 5G, let's introduce the advantages of graphene to you simply: First, graphene is very thin. How light is it? 1 mm thick graphene contains about 3 million layers of structure. Its diameter is one -one -million -in -hair, which is even thinner than the "cicada wing", and even close to transparency. Such materials can be used in high -tech products such as smartphones, tablets, or 5G base stations, which can effectively shrink the volume of reduced reduction modules, especially for precision smart products. Although the Huawei Matepad Pro 5G is a large 10.8 -inch large screen tablet, it also has a large battery of 7250mAh in built -in, but it is very thin and thin. Most of the tablets are bulky. Second, graphene has powerful thermal conductivity. Graphene is almost the highest in thermal insight in human -known materials, so it can better heat dissipation. When playing games or editing videos with Huawei Matepad Pro 5G, the heat of the processor and other easy heat areas can spread to areas with low temperature to heat up to avoid hot phenomena. Third, the flexibility, strength, and elasticity of the graphene graphene are very good, and the excellent flexibility allows it to better change the shape, especially the performance in wearing devices or folding mobile phones, such as smart watches covering the wrist The graphene technology can be added to the folding mobile phone. In addition, the strength of the graphene is 200 times that
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