Hanyang University Professors Sun Yang-kook and Kim Gi-hyun Selected as the 2019 World’s Top 1% Researchers
Total of 45 Koreans chosen: World’s best in the field of ‘material science’ for Sun Yang-kook and ‘environment and ecology’ for Kim Gi-hyun
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6,216 of the world’s 1% researchers with the largest number of paper citation counts of 2019 were announced. Among them, 45 Koreans were selected, including Hanyang professor Sun Yang-kook(Department of Energy Engineering) and Kim Gi-hyun (Department of Civil and Environmental Engineering.)
On November 20th, Clarivate Analytics, a global academic information company, announced a total of 6,216 researchers (including the selection of duplicates in more than two categories) from 60 countries in 21 categories in the world through its report "Highly Cited Research (HCR).” The announcement has been ongoing for six years now.
Americans accounted for the largest portion of the total 6,216 chosen, with 2,737 researcher(44%). There are 203 researchers from Harvard and 103 from Stanford. China followed with accounting for 636 researchers, which is a rise of 32 percent from 482 last year. South Korea had the 19th largest number with 45 researchers. This figure is a decrease of 13 researchers from 58 researchers of last year. 9 researchers were affiliated to Seoul National University which had the largest number in the country. The actual number of Korean researchers were 39 after excluding foreign professors and researchers who were double-selected two or more times.
Of the two professors at Hanyang University, professor Sun Yang-kook is included in the material science field, while professor Kim Gi-hyun is included in the environmental and ecological field. Professor Sun Yang-kook already had his name on the list for 4 years since 2016, and professor Kim Gi-hyun newly registered his name on the list. A total of 12 professors were named for the first time this year among the 45 Koreans announced.
Professor Sun Yang-kook has been studying lithium-ion batteries for more than 20 years, which are used as energy storage for portable electronic devices and electric vehicles. Professor Sun's main research area is lithium-ion battery anode material, and professor Sun emphasizes that through his anode material research, he can develop economical and large-capacity batteries and ultimately speed up commercialization of electric vehicles by reducing production costs of electric vehicles. One of the most representative research findings by Professor Sun is the ‘concentration gradient’ anode material, which varies the concentration of the constituent material according to its location in one anode particle. In other words, the material has a higher content of nickel expressing high energy density in the center of a particle, and it is a material that increases stability as it becomes more into the surface as content of manganese becomes higher. This unique design has created a safe, long-lasting battery with large capacity. After developing 'core-shell' type concentration gradient anode material for the first time in 2005, it has developed 4G concentration gradient anode material through 10 years of research and succeeded in commercializing it by applying the material to Kia Motors' Niro EV, which was released in 2018. Professor Sun's constant research on battery anode materials was linked to 599 SCI-level papers and 456 domestic and foreign patents as of 1919. It was selected as the ‘17 Scientists Close to the Nobel Prize’ by the Korea Research Foundation in 2019 and was also selected as a stone academy member of the Electrochemical Society.
Professor Kim Gi-hyun has developed new materials related to improving the environmental analysis system that controls and manages VOCs (Volatile Air Pollutants) and odors. Benzene and formaldehyde are types of VOCs that are class one carcinogens produced in real life from driving, smoking, and cooking. Most of the current air cleaning technology is specialized in dust removal, which has limitations in detecting and removing such carcinogens. Professor Kim developed a metal organic framework (MOF), which combines metal with carbon organic matter, and succeeded in adsorption and removal of such harmful substances. It also proposed a new air quality diagnostic method that analyzes 22 types of odorous substances designated by the Ministry of Environment at the same time by developing a heat desorption-based pretreatment technology that effectively concentrates harmful substances and other samples. Professor Kim was also selected as the ‘national great scholar’ for his contribution to deploy a system analysis of harmful heavy metals in the atmosphere. His analysis system is widely used not only in research labs but also in industrial sites as it can be used in many areas such as bird flu syndrome, harmful substances from electronic cigarettes, and automobile odor diagnosis.
Meanwhile, the methodology used by Clarivate Analytics (YSE:CCC; CCC.WS / the former Thomson Reuters Intellectual Property Science Division) to select influential HCR researchers is based on the analysis carried out by the Web of Science Group's Institute for Scientific Information (ISI) data experts and metrology experts. ISI is a university established within the Web of Science Group to win the reputation of Eugene Garfield, the founder of the prestigious research journal SCI, and has worked closely with universities, businesses and public institutions around the world every year announcing HCRs and Nobel Prize-winning forecasting programs.
Global News Team
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