Title: Advanced Materials for Li-ion Batteries
Speaker: Department of Chemical & Biomolecular Engineering, University of Maryland, Chunsheng Wang
Date: 10th January, 2018 (Wednesday)
Time: 10:00 a.m.
Venue: Room 326, Building Chao Kuang Piu, School of Materials Science & Engineering
Inviter: Prof. Hongge Pan
Abstract:
Current technologies for Electric Vehicles and other applications that require high energy, power density, and long cycle life are limited to conventional Li-ion battery cell assembly and manufacturing. However, the energy density and safety of current batteries still need to be improved to satisfy these requirements. Typical Li-ion batteries consist of organic electrolytes that are toxic, flammable, and pose significant safety concerns in the events of thermal runaway and improper operation and handling. In recent years, Dr. Wang’s group at the University of Maryland has explored advanced materials for Li-ion, Na-ion, Zn-ion and Mg-ion batteries and supercapacitors that address these key challenges. A new revolutionary concept of an aqueous based electrolyte for Li-ion batteries, termed water-in-salt electrolyte, has been developed, extending the electrochemical voltage stability window of aqueous electrolytes to 3V and significantly enhancing the energy density that can be attained with a water-based chemistry. Significant innovations have been accomplished in the area of solid-state battery, where recently a technology that uses a single material in the entire solid state battery structure has been developed. The talk will cover a transformational demonstration of a robust flexible Li-ion battery that can be cut open, exposed to air, and continue to operate despite the mechanical damage.
Bio:
Dr. Chunsheng Wang is a Professor in the Chemical & Biomolecular Engineering at the University of Maryland. He is an associate editor of ACS Applied Energy Materials, and UMD Director of a ARL-UMD Center for Research In Extreme Battery. He received Ph. D in Materials Science & Engineering from Zhejiang University, China in 1995. Prior to joining University of Maryland in 2007, he was an assistant professor in Department of Chemical Engineering at Tennessee Technological University (TTU) in 2003-2007 and a research scientist in the Center for Electrochemical System and Hydrogen Research at Texas A&M University in 1998-2003. His research focuses on reachable batteries and fuel cells. He has published more than 180 papers in peer-reviewed journals including Science, Nature communications, JACS, Advanced Materials. His work has been cited form more than 10500 times with H-index of 56 (ISI). His work on lithium batteries have been featured in NASA Tech Brief, EFRC/DoE newsletter, C&EN etc. Dr. Wang is the recipient of the A. James Clark School of Engineering Junior Faculty Outstanding Research Award in the University of Maryland in 2013, and winner of UMD’s invention of the Year for 2015.
