▲ Professor Maeng Hyo Cho and Kim Doo Ho (research team) 

Department of Mechanical and Aerospace Engineering, Seoul National Univ. 

Seoul National University College of Engineering announced on the 6th that the research team of Professor Maeng Hyo Cho of the Department of Mechanical and Aerospace Engineering developed a new concept of sodium anode material jointly with Professor Hwang Kyung Jae of Texas State University.

The newly developed sodium-based anode material is a manganese-based next-generation sodium-ion battery with a new concept that is attracting attention as a next-generation energy storage device based on the fundamental reaction and degeneration mechanism of lithium-manganese oxide used in a conventional high capacity lithium ion battery.

In general, transition metal-based oxides used in secondary batteries operate based on oxidation / reduction reactions of transition metals. However, the sodium anode material developed in this study is a new concept that operates using only oxygen bound to the transition metal.

Based on this new concept, the researchers showed that it is possible to overcome the limit of low voltage / capacity compared to lithium ion battery to realize high energy density of sodium ion battery.

We also proposed a rational design method of the new concept sodium ion anode material by using the first principle calculation, which is a calculation science. Based on this, we first established a sodium anode material group operated by anion oxidation / reduction reaction.

Professor Maeng Hyo Cho of the School of Mechanical and Aerospace Engineering at Seoul National University said, "In this study, we proposed a rational design method for the new concept sodium ion cathode materials using computational science techniques." This is the first time we have proposed a sodium anode material group operated by anion oxidation.

The results of the study are globally noted and published as a front cover paper in the September issue of Advanced Materials (Impact Factor = 19.79).

This study was led by Professor Maeng Hyo Cho (correspondent author) of the School of Mechanical and Aerospace Engineering at Seoul National University and professor (correspondent author) of the Texas State University of the United States and Dr. Doo-Ho Kim (first author) Research) business and industry as part of the energy technology development project of the Ministry of Commerce and Industry. 

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 Financial News  http://www.fnnews.com/news/201709060804450647
 Korean Economic Daily http://news.hankyung.com/article/2017090608891 College of Engineering at SNU http://eng.snu.ac.kr/node/14849