Seminar & Colloquium
[세미나: 9월 26일(목), 오후 5시] Prof. Steven Boles, Norwegian University of Science and Technology(NTNU)
Title
Dealing with mechanical issues in batteries: Future challenges, strategies, and opportunities
Speaker
Prof. Steven Boles, Institute of Energy and Process Engineering, Norwegian University of Science and Technology(NTNU)
* Biography
Steven T. Boles is a Professor in Energy and Process Engineering at the Norwegian University of Science and Technology (NTNU) where he has a research focus in Sustainable Energy Systems. He is concurrently a Team Leader at the Centre for Advances in Reliability and Safety (CAiRS) in Hong Kong and maintains an Adjunct Professor position in the Department of Electrical and Electronic Engineering at the Hong Kong Polytechnic University (HK PolyU). He obtained his B.S. from Carnegie Mellon University and his Ph.D. from the Massachusetts Institute of Technology, both in Materials Science and Engineering. In 2010 he was awarded the Alexander von Humboldt Research Fellowship to conduct in situ and operando investigations on lithium-ion battery anodes at the Karlsruhe Institute of Technology. Starting in 2014 he served as an Assistant and later Associate Professor at HK PolyU where he led an interdisciplinary research team exploring new materials for electrochemical energy storage devices, energy infrastructure, and high-efficiency electronic devices. He joined NTNU in 2021 with the goal of developing innovative sensors to understand interlinked mechanical and electrochemical phenomena in sustainable energy systems.
| Date | Thursday, September 26th, 2024
| Time | 17:00 ~
| Venue | 온라인 ZOOM (https://zoom.us/j/84102408987)
[Abstract]
Volumetric changes in lithium-ion batteries are effectively intrinsic to these devices due to the movement of ions during charging and discharging. While this has implications for both the cathode and anode materials, which must reversibly accommodate and expel the arriving and departing ions, it is the asymmetry between the expansion and contraction of the electrodes that leads to an increasing number of mechanically oriented challenges. In particular, the pursuit of “high-capacity” anode materials will inevitably give rise to problems stemming from a fundamental link between capacity and volumetric deformation. At the cell level, this leads to the known challenges associated with both electrode design and accelerated capacity fading. In this talk, challenges, strategies, and opportunities associated with the choice of anode material in lithium-ion batteries will be discussed. Extending from this discussion, the use of novel sensing strategies, such as with fiber optics, will be explored as the merits for utilizing photonic-based monitoring offers a range of advantages over other sensing approaches. Opportunities for novel information gathering and unique insights into the State of Health and State of Safety will be explored.
| Host | 최인석 교수(02-880-1712)