Prof. Seongmin BakKorea
Yonsei University
| 2024/09 to present | | Associate Professor, Department of Battery Engineering, Yonsei University |
| 2023/03 to present | | Associate Professor, Department of Materials Science and Engineering, Yonsei University |
| 2007 - 2013 | | Ph.D., Materials Science and Engineering, Yonsei University |
| 2001 - 2007 | | B.S., Metallurgical Engineering, Yonsei University |
| 2020/06 - 2023/02 | | Staff Scientist, National Synchrotron Light Source II, Brookhaven National Lab |
| 2016/09 - 2020/05 | | Staff Scientist, Chemistry Division, Brookhaven National Lab. |
| 2013.12 - 2016.09 | | Post Doc., Chemistry Division, Brookhaven National Lab. |
| 2010.11 - 2012.12 | | Visiting Student, Chemistry Division, Brookhaven National Lab. |
Electrochemical Energy Storage Materials, Synchrotron X-ray Characterization, Li-ion Batteries , Next-generation Batteries
Prof. Seong-Min Bak is a faculty member at Yonsei University specializing in advanced battery materials and synchrotron-based X-ray characterization. His research covers both fundamental understanding and practical design of next-generation energy storage systems, including Li-ion, Na-ion, and beyond. He has authored over 100 peer-reviewed publications with more than 10,000 citations (h-index ~56). He actively collaborates with global synchrotron facilities and leads international research initiatives, while also engaging in extensive industry-linked projects to bridge advanced characterization with real-world battery development and commercialization.
Nano-Structural Engineering of Conversion–Alloying Anodes for Reversible Sodium-Ion Storage
TBA TBA
Lithium-Ion Batteries/TBA
Conversion–alloying materials (CAMs) have attracted significant attention as high-capacity anodes for sodium-ion batteries; however, their practical application remains limited by severe initial irreversibility and poor cycling stability.
This talk will present a nano-structural engineering strategy to enable reversible charge storage in CAM systems, together with a simple and scalable materials design approach. By tailoring structural features at the nanoscale and introducing controlled structural disorder, initial irreversible reactions can be effectively reduced, while confining active materials within conductive carbon frameworks stabilizes the electrode during repeated cycling.
Using representative systems including Pb-based alloying materials and Ge-based nanocomposites, we demonstrate that these design principles lead to improved reversible capacity and stable cycling performance, while maintaining practical feasibility for scalable implementation. Mechanistic insights suggest that sodium storage proceeds through coupled conversion–alloying pathways, rather than independent reactions, with structural adaptability playing a key role in enabling reversibility.
These results demonstrate that reversibility in CAM anodes can be effectively engineered through nano-structural design, providing a general framework for developing high-performance sodium-ion battery anodes.