ChEMS Department Seminar

Event Date/Time: 
January 3, 2019 - 9:10am
Event Location: 
3540 EB
Speaker: 
Jie Zhao
From Chemical Interface to Biological Interface

Abstract

The significant increase in energy density of batteries must be achieved by exploring new materials and cell configurations. Lithium metal and lithiated silicon are two promising high-capacity Li-containing anodes. Unfortunately, both these anodes require reliable interfaces to survive the serious environmental corrosion during handling and cycling. During my PhD, I developed different coatings such as Li2O, LiF and graphene and finally realized Li-containing anodes with both electrochemical and environmental stability. The key challenge of bioresorbable medical devices is to develop stable encapsulation materials that can provide high-performance operation yet are completely dissolvable in biofluids and are fully biocompatible. During my postdoc, I developed biodegradable and wireless electronics for therapeutic purposes, specifically as electrical stimulators to accelerate tissues regeneration. With ultrathin transferable layers of silicon nitride as biofluid barriers, I solved the fundamental problem in achieving the relatively long operating time for the bio-resorbable stimulators.

Bio

Jie Zhao received her Ph.D. in materials science and engineering at Stanford University and her B.S. in chemistry from Zhejiang University. She is currently a postdoctoral scholar in the Center for Bio-Integrated Electronics (CBIE) at Northwestern University. Her research has involved fundamental studies of chemical and biological interfaces, design and synthesis of novel materials with tailored nanostructures, and the development of high-performance energy storage systems and soft biomedical devices. She has published 7 first-author papers in high-profile journals including Nature Nanotechnology, Nature Communications, JACS, and PNAS, and co-authored 23 papers with over 3300 citations.