With the development of electric vehicles and the expansion of ESS, the demand for high-energy-density batteries has been increasing. Still, the energy density of existing lithium-ion batteries has reached its limit. Professor Yun Jung Lee aims to develop a lithium-ion secondary battery system that dramatically increases capacity by designing a cathode material for a battery that uses the oxygen anion oxidation-reduction reaction of Li₂O and maximizing the anion oxidation-reduction reaction.

It will be possible to expand the capacity of lithium-ion secondary batteries to be widely used in mobile ICT, electric vehicles, and ESS, leading to the development of related industries and preoccupation with next-generation energy technologies. In addition, the research on interfacial reactions, catalysts, and electrochemistry can be widely applied to air batteries, catalytic chemistry, and electrochemical devices and will contribute to developing similar studies.

The lithium-ion secondary battery is one of the most popular fields globally and is challenged by many companies and research institutes. Professor Yun Jung Lee’s research project proposed a driving principle based on oxygen anions and was highly distinguished from previous studies.