报告题目：Polycrystalline Ceramics – Creative Means for Improving Electrochemical Energy Conversion Device Performance by Light and Chemical Modulation of Grain Boundaries and Surfaces

报告人：Harry L. Tuller 教授 （麻省理工学院）

报告时间：2023年9月4日（周一）10:00-11:00

报告地点：华南理工大学（大学城校区）环境与能源学院B4-215学术报告厅

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环境与能源学院

2023年8月23日

报告摘要：

While solar and wind energy promise carbon-free renewable energy, their intermittent character requires efficient means for storage of generated electricity. Reversible solid oxide fuel and electrolysis cells offer the opportunity to generate hydrogen and related chemical fuels during periods of illumination and wind, and alternatively electricity, when solar cells and wind turbines are down. Present challenges include high operating temperatures, costly components and relatively rapid degradation rates, limiting opportunities. 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 cell cathode, allowing for enhanced initial performance and markedly decreased degradation rates. I then go on to describe our ability to modulate ionic transport in polycrystalline solid electrolytes with light, suggesting options for lower device operating temperatures and the creation of novel devices.  In both cases, I highlight the key role of interfaces and the ability to control them.

报告人简介：

Prof. Harry L. Tuller is R.P. Simmons Professor of Ceramics and Electronic Materials; MIT Department of Materials Science and Engineering.  His research focuses on defects, diffusion, and the electrical, electrochemical and optical properties of metal oxides with applications to sensors, fuel cells, thin film oxides, MEMS and memristive devices. He has published over 525 articles, co-edited 15 books and awarded 34 patents. He is Editor-in-Chief of the Journal of Electroceramics; Series Editor of Electronic Materials: Science and Technology published by Springer-Nature; co-founder of Boston MicroSystems, a pioneer in silicon carbide-based MEMS technology and devices and Past President of the International Society of Solid State Ionics (2015-17). 

His honors include honorary doctorates from the University Provence, Marseilles and the University of Oulu, Finland. He is a Fellow of the American Ceramic Society, the Electrochemical Society and the Materials Research Society and Distinguished Life Member, American Ceramic Society and Life Senior member IEEE. He is recipient of Fulbright, von Humboldt and Helmholtz International Fellow Awards and of the Thomas Egleston Medal – Columbia University School of Engineering.