Yonsei University · Engineering
Professor Yong Min Lee's research lab specializes in advanced energy storage systems, with a primary focus on solid-state batteries and lithium-metal batteries. The lab investigates critical interfacial phenomena, such as solid electrolyte interphase (SEI) formation and stabilization, to enhance electrochemical performance and longevity. Key research directions include the development of novel electrolyte additives, innovative electrode architectures with optimized component distribution, and the integration of digital twin technologies for real-time monitoring and prediction of battery behavior. The lab also explores conductive additive synergies and scalable fabrication methods to enable high-energy-density, safe, and durable all-solid-state batteries.
Figures are computed from collected data and may differ slightly.
The morphological and compositional changes of the solid electrolyte interphase (SEI) layer formed on the surface of Si thin electrodes during precycling were investigated. At the beginning of charging, the native layer ( and silanol) covering the surface of the Si thin electrode is readily destroyed and a new SEI layer is formed by the decomposition of both organic solvents and anions. At this stage, the interfacial resistance decreases to a minimum level. Thereafter, the interfacial resistance
The synergistic effect of different types of conductive additives, vapor-grown carbon fibers (VGCF) and carbon black (Super-P) on the cathode performance of lithium-ion batteries was investigated.
Abstract The digital twin technique has been broadly utilized to efficiently and effectively predict the performance and problems associated with real objects via a virtual replica. However, the digitalization of twin electrochemical systems has not been achieved thus far, owing to the large amount of required calculations of numerous and complex differential equations in multiple dimensions. Nevertheless, with the help of continuous progress in hardware and software technologies, the fabricatio
In all-solid-state batteries, the electrode has been generally fabricated as a composite of active material and solid electrolyte to imitate the electrode of lithium-ion batteries employing liquid electrolytes. Therefore, an efficient protocol to spatially arrange the two components with a scalable method is critical for high-performance all-solid-state batteries. Herein, a design of the all-solid-state electrode is presented for all-solid-state batteries with higher energy density than the typi
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