Event

UMERC Special Seminar Series

Thursday, June 15, 2017
1:00 p.m.-2:00 p.m.
UMERC Conference Room, 1202 EGL
Catherine Stephens
301 405 9378
csteph5@umd.edu

High Energy Density Electrochemical Energy Storage: Materials and Systems

Dr. Jagjit Nanda

Materials Science and Technology Division

Oak Ridge National Laboratory, Oak Ridge TN 37831

Electrochemical storage systems such as lithium based batteries, redox flow and ultra-capacitors are highly complex assemblies whose performance, life and safety are fundamentally governed by hierarchical multi-scale interactions between materials, electrochemical transport (diffusion and kinetics), architectures and system design. To elucidate a specific example, my talk will focus on development of high energy density advanced lithium-ion1-2 and conversions based electrode materials3-4. I will describe various materials synthesis and interfacial modifications including 3D electrode architectural designs to improve capacity utilization, cycle life and energy efficiency. A systematic research approach guided by computational modeling is used for designing high capacity cathode materials that can accommodate more than one lithium ion per transition metal redox. As a crosscut to these efforts, I will provide an overview of various multi-scale characterizations techniques such as micro-Raman imaging5, XANES based tomography6 and neutron-imaging/spectroscopy7 as enabling methods for developing electrode materials and providing insights into their failures and degradation.

 Biosketch: Jagjit Nanda is a Team Leader and Senior Staff Scientist at Materials Science and Technology Divison, Oak Ridge National Laboratory working in the area of energy storage materials, systems and multiscale imaging & spectroscopy. He also holds a joint appointment as a professor in Department of Chemical and Bio-molecular Engineering, University of Tennessee. Prior to joining Oak Ridge, Jagjit worked as a Technical Expert at the Research and Advance Engineering Center of Ford Motor Company, Dearborn, Michigan (2005-09), leading R&D projects in the area of energy storage materials and nanotechnology. Jagjit received his Ph.D. in Solid State Chemistry & Materials Science from Indian Institute of Science, Bangalore in 2000 working in the area of colloidal semiconductor nanostructures for photovoltaic and light emitting application. Following his PhD, Jagjit spent two years working as a post-doctoral fellow at Stanford University (2000-02) and then 3 years at Los Alamos National Laboratory as a Research Staff Associate (2002-05) applying various ultra-fast laser spectroscopic methods for probing condensed phase systems such as photo-induced electron transfer couples, quantum dot heterostructures and charge transfer complexes.  He has more than 150 technical publications, several patents and is an active member in a number of professional scientific societies.