报告时间：2024年6月18日下午14:30

报告人：Chao-Yang Wang （The Pennsylvania State University）

报告地点：清华大学逸夫技术科学楼A205学术报告厅

邀请人：林元华老师

报告题目：Safety of All Solid State Batteries

报告简介：

Battery safety remains the first and foremost concern for electric vehicles. It has been taken for granted that all solid state batteries (ASSBs) have superior safety and high energy density. But ASSBs of high energy density mean the use of lithium metal anode, which is a thermodynamically more energetic and kinetically more flammable fuel than liquid carbonate electrolytes in conventional Li-ion batteries. In this talk we present a novel method to measure the shorting current, intracell temperature rise, and ensuing fires in lithium batteries. We reveal for the first time that ASSB fires occur over an ultrashort time scale of 1-5 seconds upon internal shorting, making pack-level safety measures virtually in vain.

报告人简介：

Dr. Chao-Yang Wang is William E. Diefenderfer Chair Professor of Mechanical Engineering and Professor of Chemical and Materials Science & Engineering at the Pennsylvania State University. He has 230+ journal publications and an H-index of 115. He holds over 140 patents and has published two books, “Battery Systems Engineering” by Wiley and “Modeling and Diagnostics of Polymer Electrolyte Fuel Cells” by Springer. Dr. Wang is known for his innovative research on batteries and fuel cells; particularly for pioneering a new battery paradigm with modulatory states and interfaces. The all-climate battery (ACB) he invented was adopted by 2022 Winter Olympics as well as commercialized by several carmakers. His latest invention on fast charging batteries was named as one of 10 biggest science stories in 2022 by the Guardian. He is an academician of U.S. National Academy of Inventors (NAI), a fellow of American Society of Mechanical Engineers (ASME) and a speaker of many public forums such as 2021 Tencent WE Summit alongside two Nobel Laureates, 2022 Distinguished Transport Lecture at Hong Kong University, 2023 Hawkins Lecture at Purdue University, and 2024 PAIR Distinguished Lecture at Hong Kong Polytechnic University.