About this event

Agenda:

11:30 AM – 12 Noon: Nano Journal Club*

12 Noon – 12:10 PM : Introduction and Announcements

12:10 Pm – 1:00 PM : Seminar by Jagjit Nada

*Nano Journal will discuss the paper on : Challenges for and Pathways toward Li-Metal-Based All-Solid-State Batteries

Seminar Talk: Probing Nanoscale Interface and Interphases in Lithium-ion Batteries

Electrochemical energy storage (EES) is one of the key drivers for next generation mobility, consumer electronics, defense technology, and other applications. EES is also an enabler to improve penetration of renewable energies such as solar and wind into the electric grid. To meet such demands there is an increasing need for batteries to have high energy density and power without compromising on safety and affordability. Electrode-electrolyte interfaces are central to battery performance and life as the ion must travel across the device without interruption between heterogenous materials interfaces. Most liquid and solid electrolytes have limited thermodynamic stability and form a reactive interphase layer that can usually range from a few nanometers to tens of nanometer The nature and composition of such reactive interphase layer primarily determines the quality of the ion-transport at the interface. The talk will focus on investigation of solid-electrolyte interphase (SEI) on lithium-ion anodes such as silicon that is critical for the cycle and calendar life. The second part of the talk will cover solid-state batteries, where role of the solid electrolyte-electrode interfaces is critical for maintaining capacity and high-rate capability. Several important class of solid-electrolyte and their stability with Li-metal and cathodes will be presented.

Acknowledgement

This work was supported by the US Department of Energy’s Office of Energy Efficiency and Renewable Energy through the Vehicle Technology Office

Jagjit Nanda is a Distinguished Staff Scientist and Group Leader of the Energy Storage and Conversion Group at Oak Ridge National Laboratory’s Chemical Sciences Division with 18 plus years of experience in energy storage and battery materials. He also has a joint faculty appointment in the Chemical and Biomolecular Engineering Department at the University of Tennessee, Knoxville. Prior to joining Oak Ridge in 2009, Jagjit worked as a Technical Lead at the Research and Advanced Engineering Center, Ford Motor Company, MI, leading R&D projects in lithium-ion battery materials and nanomaterials for energy application. He is the co-editor of Hand Book of Solid-State Batteries-2015 along with Nancy Dudney and Willam West and has co-authored more than 150 journal and technical publications in the topic of batteries, solid-state electrolytes and electrochemical interfaces. Jagjit is a Fellow of Electrochemical Society and winner of two R&D 100 awards in the area of batteries and supercapacitors.