题 目：Material- and System-Level Studies of Solid-State Batteries 报告人：Dr. Shou-Hang Bo (薄首行) 单 位：Assistant Professor of Materials Science and Engineering, University of Michigan � Shanghai Jiao Tong University Joint Institute 时 间：2017年9月21日 (周四) 14:00 地 点：化学楼H201 Email: shouhang.bo@sjtu.edu.cn 联系人：介观化学教育部重点实验室-彭路明老师 Dr. Shou-Hang Bo received his B. S. degree in Chemistry from Fudan University; and Ph. D. degree in Chemistry from Stony Brook University, under the supervision of Prof. Clare Grey and Prof. Peter Khalifah. Since 2014, Dr. Bo had been a postdoctoral fellow in Prof. Gerbrand Ceder's group, at Department of Materials Science and Engineering, Massachusetts Institute of Technology, and Materials Sciences Division, Lawrence Berkeley National Laboratory. Dr. Bo joined University of Michigan ─ Shanghai Jiao Tong University Joint Institute in 2017 as a tenure-track assistant professor. His recent research interests include (1) material- and system-level studies of solid-state materials for energy storage devices; and (2) real-time spectroscopic and scattering studies of materials synthesis. Abstract: Solid-state batteries have seen a resurgence of interest in recent years, because of their potential for enhanced safety and energy density. However, major obstacles of implementing solid-state batteries on both material and system levels are challenging to be overcome. In this talk, taking sodium solid-state batteries as an example, I will discuss how the application of advanced scattering and spectroscopy techniques together with ab initio modeling identifies important factors that determine solid-state battery interface stabilities, and how these scientific insights can lead to integration criteria of solid-state battery components. In specific, the key to enable Na-ion conductivity for a class of emerging Na solid-state electrolytes (i.e., Na3PX4, X = S, Se) will be discussed. The different decomposition pathways of the solid-state electrolyte and at the interfaces of electrolyte/electrode and electrolyte/carbon will be also discussed. We distinguish the thermodynamic and kinetic stabilities of the electrolyte, providing more precise insights into the competition between thermodynamics and kinetics in solid-state electrolyte decompositions. |