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제  목 : Versatility of Electrode–Electrolyte Interfacial Reactions Governing Next-Generation Battery Development

연  사 : 고영민 교수님(성균관대학교 화학과)

일  시 : 2025년 9월 4일(목) 오후 4시 30분

장  소 : 화학관 2층 330226호실

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Versatility of Electrode–Electrolyte Interfacial Reactions Governing Next-Generation Battery Development

Youngmin Ko

Department of Chemistry, Sungkyunkwan University (SKKU)

 Electrifying industrial sectors such as transportation and grid-scale energy storage is a critical step in addressing carbon emissions. At the heart of the electrification process lies electrochemical energy storage, which leads to ever-increasing demand for advanced battery technologies. Batteries enable energy conversion between chemical and electrical forms by exploiting the thermodynamic potential difference of charge carriers—metal ions and electrons—between two electrodes: the anodes and the cathodes. Central to this process are charge transfer reactions, particularly those occurring at the electrode–electrolyte interfaces. These interfacial reactions play a decisive role in battery performance: they can either trigger harmful side reactions or enable the formation of beneficial interphases. Therefore, understanding the underlying chemistry of these interfacial reactions is primary research to efficiently exploit their versatility. This presentation will highlight a series of research focused on studying interfacial reactions in diverse battery systems including lithium metal anodes, silicon-based anodes, and high-nickel cathodes. A combination of analytical techniques—electrochemical analysis, in-situ characterization, microscopy, and spectroscopy—was employed to elucidate the nature of interfacial reactions and their versatility in determining the performance of batteries. The insights provided here not only deepen understanding of interfacial phenomena but also offer guiding principles for the rational design of electrode–electrolyte interfaces in next-generation batteries to achieve enhanced stability, efficiency, and longevity.