南开大学材料科学与工程学院成立十周年系列学术论坛

报告时间：2025年4月18日上午10:00-12:00

报告人：Prof. Dr. Jinwoo Lee  (KAIST Endowed Chair Professor，Assoc. Editor of Chemical Engineering Journal)

报告地点：材料科学与工程学院236会议室

报告题目：Next-Generation Sulfur Cathode: Porous Materials and Electrocatalyst to Accelerate Sulfur Conversion Reaction

报告简介：Although lithium-sulfur (Li-S) batteries have been expected as a promising high-energy-density battery system, entangled problems in each cell component hamper their practical use. Especially in cathode, low electronic/ionic conductivity of sulfur based active material, continuous dissolution of polysulfide, and sluggish redox kinetics cause the poor cycle stability and energy density. For the energy density of 500~600 W h kg-1, achievement of high areal sulfur loading and low electrolyte to sulfur (E/S) ratio is needed, but conventional carbon/sulfur composite-type cathodes have limitations to satisfy this requirement. In this seminar, next-generation sulfur cathode with the electrocatalyst accelerating the sulfur conversion reaction is introduced as a powerful platform to simultaneously improve the cycle stability, reversible capacity, and rate capability. This seminar aims to present comprehensive overview of previously conducted studies and future research direction to design the efficient electrocatalyst for sulfur cathode. In particular, strategies to search for new electrocatalyst, to improve the catalytic activity and stability of catalyst, and to fundamentally understand the electrocatalytic trends in sulfur cathode will be covered. We believe development of optimized catalytic materials in cathode with the deep fundamental understanding on electrocatalysis enables realization of high areal sulfur loading and low E/S ratio for high energy density of Li-S batteries.

报告人简介：Prof. Jinwoo Lee obtained his PhD degree in 2003 at Seoul National University, Korea. Since then, he has worked as a Postdoctoral Researcher at Seoul National University during 2003–2005, Postdoctoral Research Associate at Cornell University, during 2005-2008, Assistant Professor (2008-2012), Associate Professor (2012-2017) and Professor (2017-2018) at Pohang University of Science and Technology.   He has been working at Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) since 2018.
    Prof. Lee’s research interest focuses on material science for advanced energy conversion and storage devices. He has published 290 reputable papers with H-index of 93 and delivered numerous Keynotes and invited lectures.