Overlithiated cathodes use the oxidation-reduction reactions of transition metals and the oxygen redox of lattice oxygen to achieve high energy capacity. It also has a low percentage of nickel (Ni) or cobalt (Co) and a high percentage of inexpensive manganese (Mn), making it a promising, ultra-low-cost, high-energy cathodes material for electric vehicles.

Professor Minkyu Kim's research aims to solve the problem of unstable high-voltage redox reactions by controlling the voltage of the redox reaction of overlithiated cathodes within a stable range. In addition, rather than developing a new, essential high-voltage electrolyte, the research will allow for direct compatibility with existing electrolyte systems, thus increasing the potential for commercialization.

Research on controlling the degree of orbital hybridization to regulate the redox voltage of oxygen is expected to be challenging but could provide a fundamental solution for developing next-generation battery anode materials.