Graphene is the world's thinnest, lightest, hardest, most conductive and flexible nanomaterial. Its power is often staggering. A 1 cm thick graphene plate allows a 5 ton adult elephant to stand firmly on top; a cell phone battery made of graphene can fill the electricity in one second; a graphene-based tablet , you can fold it into a phone size and put it in your pocket. It is also widely used in electronics, aerospace military, new energy and new materials. On November 25, at the 20th "Industrial Technology Information" conference hosted by the Industrial Intelligence Research Center of the Chinese Academy of Sciences Document Information Center, the researchers detailed the application of graphene in supercapacitors and biosensors. The theme of the release focuses on the same field, and based on the analysis of authoritative databases, the future development trends of the two are judged. Graphene supercapacitor technology: China is in a period of rapid growth Today's energy and environmental problems are becoming more and more serious, and the development of green vehicles represented by new energy electric vehicles is growing. Solving the problem of braking energy recovery system is one of the keys to industrial development. Therefore, the demand for electrochemical energy storage devices with high energy density and high power density is becoming more and more urgent. At the same time, supercapacitors have been given greater expectations due to their long life and short charging time. The main research fields of graphene supercapacitors include transition metal oxides for electrode materials, activated coal and nitrogen-doped graphene, collector surfaces, etc. The technologies involved include graphene oxide monomers, excessive metal oxides, and nitrogen blending. Miscellaneous, coal activation, etc. With the discovery of the separation and preparation of graphene by the physicist at the University of Manchester in 2004, the application of graphene in supercapacitors has gradually developed rapidly. The number of publications in the patent year has increased rapidly, reaching a peak of 280 per year in 2012. At present, the relevant technical patents average about 250 items per year. The development of technology in the field of graphene supercapacitors in China has grown rapidly since 2009. The number of applications per year has rapidly exceeded 100 per year, reaching a peak in 2012. Since then, it has remained at more than 120 per year, which is in a period of rapid growth. The reporter found that among the graphene supercapacitor technology patent holders, the largest number of the top 25 patent holders are from China (17). The top five rankings are: Ocean King Lighting Technology Co., Ltd., Chinese Academy of Sciences, South Korea Samsung, American Nanotek Instruments and Zhejiang University. "From the content of industrial technology information release, the number of papers and patents in the field of graphene in our country is still considerable. These data fully reflect the scientific and technological vitality of our country," said Yan Weizhong, a professor of chemical engineering at Tsinghua University. He introduced that the main manufacturing and application markets for graphene are currently in China, and many domestic institutions have patented in this field. Beijing and Jiangsu have respectively become the regions where the development and research and development of graphene in the country are concentrated. In the next 5 to 10 years, these regions will also be strongly deployed in the field of graphene. "From the perspective of industrialization, at present, the technology of graphene capacitors is more concentrated in university laboratories, and there is still a long way to go before industrialization. Our country should promote the connection between universities and enterprises and vigorously promote the industry of graphene capacitors. Development." Wei Weizhong suggested. Graphene Biosensor: China's SCI is ranked first in terms of publications Graphene has rapidly become a hot material in biosensor research due to its special nanostructure, excellent optical and electrical properties and good biocompatibility, and successfully detected a variety of biological small molecules, DNA, enzymes, proteins and cells. Wait. "Biosensors are an important research direction in the field of life analysis chemistry and biomedicine. They have been widely used in clinical disease diagnosis and treatment research. But graphene biosensors are currently in the laboratory stage and have not yet been industrialized." National Nanoscience Center PhD student Shi Jidong said. According to researchers from the Literature and Information Center of the Chinese Academy of Sciences, the research of graphene in the field of biosensors focuses on the following two aspects: First, graphene electrochemical biosensors, including Abe sensors, electrochemiluminescence and field effect transistors, etc. , involving enzyme sensors (for detecting hydrogen peroxide, glucose, ascorbic acid, dopamine, uric acid, etc.), immunosensors (for detecting viruses, bacteria, cancer markers, etc.), DNA sensors, protein sensors, etc.; Biosensors, including fluorescence sensors and resonance-based energy transfer sensors. The distribution of graphene in the field of biosensors has the following characteristics: the number of documents issued from 2005 to 2009 is relatively small, and the number of annual publications is less than 100, mainly from the United States and China. The research progress is relatively slow and in technology. During the gestation period; with the 2010 physicist Andrea Heim and Konstantin Novoselov of the University of Manchester in the United States won the Nobel Prize in Physics for the study of graphene materials, the global graphene used in biology The growth trend of SCI in the sensor field has gradually become obvious. In 2015, the number of SCI documents exceeded 2,300, and related technologies entered a stage of rapid growth. Statistics show that graphene is used in biosensors in 85 countries and regions around the world, and the total number of SCIs in graphene for biosensors in 10 countries and regions such as China, the United States, and India. 81.61%. Among them, China has a clear advantage in this research, accounting for 47.76% of all papers; the second place is the United States, which accounts for 9.39% of all papers. In terms of highly cited papers, SCI papers for graphene in the field of biosensors belong to 345 high-cited papers with 345 papers from 35 countries and regions. Among them, ESI High cited papers mainly come from China (176 articles), the United States (86 articles), Singapore (39 articles), Korea (23 articles) and India (15 articles). It is worth mentioning that among the top 10 ESI high cited SCI papers, 6 papers were published from Fuzhou University, Chinese Academy of Sciences Changchun Institute of Applied Chemistry, Tsinghua University and Shanghai Institute of Applied Physics of the Chinese Academy of Sciences. It has certain technical advantages in this technical field. 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