Seoul National Univ. DMSE
Notice
Seminar & Colloquium
Seminar & Colloquium
[세미나: 4월 21일(월), 오전 10시 30분] Prof. Harry L. Tuller, MIT
| Titles | Chemical Modulation of Grain Boundaries and Electrochemical Interfaces: New Opportunities for Improved Energy Conversion & Monitoring Devices
| Speaker | Prof. Harry L. Tuller
Materials Science and Engineering, MIT
*Education - 1973 EngScD, Solid State Science & Engineering, Columbia Engineering - 1967 M.S. Electrical Engineering, Columbia Engineering - 1966 B.S. Electrical Engineering, Columbia Engineering *Professional Experience - 1975~present, Professor of Materials Science and Engineering, MIT *Biography Professor Tuller earned his bachelor's and master's degrees in electrical engineering, as well as a Ph.D. in solid-state science and engineering, from Columbia University. Prior to joining the Department of Materials Science and Engineering (DMSE) faculty, he completed postdoctoral research at the Technion – Israel Institute of Technology. Over the course of his career, he has authored more than 500 publications, co-edited 15 books, and holds 33 patents. He currently serves as the editor-in-chief of the Journal of Electroceramics and is the series editor for Electronic Materials: Science and Technology. Additionally, he co-founded Boston MicroSystems, a leading company in the development of silicon carbide-based MEMS technologies and devices. |
| Date | Monday, April 21, 2025
| Time | 10:30~
| Venue | #228, Bldg.33 (33동 228호)
| Abstract |
Functional ceramics play an increasingly critical role in energy conversion devices given unique electrical, electrochemical, and mechanical properties with ability to operate in harsh chemical and thermal environments at relatively low cost. Key challenges commonly include optimized initial performance and minimized degradation rates. Both objectives are often tied to how both internal (e.g. grain boundaries, phase boundaries) and external interfaces function during device operation. I begin by reviewing recent advances in our laboratory demonstrating extraordinary ability to control and manipulate catalytic activity at the rate controlling solid oxide fuel/electrolysis cell electrodes, allowing for both enhanced initial performance and markedly decreased degradation rates. I then go on to describe our ability to modulate ionic transport at grain boundaries in polycrystalline solid electrolytes with promise for reduced ohmic losses and reduced degradation resulting from current induced delamination and porosity as well as the development of novel radiation detectors.
Acknowledgement of contributions from M. Yasutake, H.G. Seo, T. Defferriere, C. Gilgenbach, J. LeBeau, J.Christian, M. Muller and K. Sasaki. Support for r-SOC research by JST via ASPIRE funding to Kyushu Univ & MIT while GB support by U.S. Department of Homeland Security, Countering Weapons of Mass Destruction Office, under awarded grant 22CWDARI00046. This support does not constitute an express or implied endorsement on the part of the Government.
| Host | Prof. WooChul Jung (02-880-8030)