Korea Advanced Institute of Science and Technology · Materials Science
Professor Jisung Lee's research lab specializes in advanced materials development for sustainable energy technologies and functional materials processing. The lab focuses on designing high-performance anode materials for potassium-ion batteries, leveraging novel nitride and doped carbon architectures to achieve exceptional stability and kinetics. It also explores innovative surface engineering techniques, such as high-frequency induction hardening, to enhance the mechanical durability of structural materials. A key theme across the research is the rational design of materials at the atomic and microstructural levels to optimize electrochemical and mechanical performance.
Figures are computed from collected data and may differ slightly.
Niobium nitride is first reported as an ultra-stable anode for KIBs. The superior electrochemical performance is attributed to large host for accommodating K ions with small-strain, and a high portion of the surface-controlled reaction.
The introduction of a single Ni atom into an inactive N-doped carbon matrix, through its role as an electrocatalyst, awakens the dormant N sites, significantly suppressing the polyiodide shuttle effect and enhancing iodine redox kinetics.
High-frequency induction hardening is one of the most commonly used heat treatment techniques for steel and by which enhanced surface hardness can be achieved for fatigue and wear resistance. During this process, a certain depth of products is rapidly heated and quenched so that the microstructure of the hardened surface is finer than those of the other parts of the product. In general, the hardening depth is more uniform in the straight surface than in the irregularor complex-shaped surfaces be
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