SNU Professor Kisuk Kang Research Team, developed new concept lithium-ion battery and clarified energy storage reaction mechanism
- Published in world-class journal, Nature Energy


▲SNU Department of Materials Science and Engineering Professor Kisuk Kang Research Team : (Left) Professor Kisuk Kang, Researcher Sung-Kyun Jung

 
SNU College of Engineering (Dean Lee Kun-woo) stated on 24^th that Professor Kisuk Kang Research Team (Reseacher Sung-Kyun Jung) developed new concept nanocomposite successfully which can replace lithium-ion battery positive electrodes and clarified energy storage reaction mechanism simultaneously.
 
Previous positive electrodes in lithium-ion batteries should contain redox-active transition metal and lithium. However, the number of these materials in the natural world is very small. Especially, the supply of materials which can meet the high density demand for electric cars are much more limited.
 
Hence, the research team used simple mechoanochemical mixing of the lithium and transition compounds for the development of the positive electrodes. Especially they used monoxide metal (MO, M=Mn, Fe, Co) which previously was not utilized in positive electrodes.
 
As the result, the team was able to realize positive electrode properties using iron oxide and manganese oxide which are abundant in nature. Also, they clarified that nanocomposite electrodes store energy through reaction of anions produced in lithium compound on transition compound surface.
 
Professor Kang explained, “Utilizing lithium-ion battery positive electrodes, we can use many transition materials as positive electrodes.” and said, “This will be breakthrough in lithium-ion battery electrode development.”
 
The result of the research was published in world-wide journal related in energy ‘Nature Energy’. This work was supported by Samsung Research Funding Centre of Samsung Electronics.