Start
Jan 11, 2018 - 17:00
End
Jan 11, 2018 - 18:00
Venue
Rm. No. 118 Ground floor Chemical Engg. Dept.
Event Type
Speaker
Dr. Tanya Gupta National Institute of Science and Technology Gaithersburg
Title
Characterization of interfacial phenomenon in electrochemical systems
Abstract: The need for increasing the penetration of renewables into the grid is one of the driving factors that has led to a surge in research on efficient energy storage devices like batteries. Batteries are as much of a mechanical system as they are electrochemical. Mass transport across different components of a battery is accompanied with mechanical changes that play a critical role in determining its cycle life capacity retention and eventual failure. This talk will cover morphological changes in two important anode materials Silicon and Zinc. I will discuss a Zinc vs. Prussian Blue battery system that shows potential for grid scale application. Material characterization is inherent to research in batteries and in-situ imaging of battery cycling has significantly enhanced our understanding of electrochemical processes. The talk will also include aspects of liquid cell electron microscopy and beam induced artifacts that we have modeled and its scope towards interpretation of microscopy results.Bio: Tanya Gupta is a Postdoctoral Researcher in the Nanoscale Imaging and Spectroscopy Group at National Institute of Science and Technology Gaithersburg. She received her Bachelor of Technology in Chemical Engineering from the Indian Institute of Technology Kanpur and a Ph.D. in Mechanical Engineering from Princeton University. Her doctoral research focused on surface phenomenon in electrochemical systems. She is currently working to develop theoretical and experimental techniques that aim to establish parameter space for artifact-free electron spectroscopy and microscopy in liquid samples.
Note: The seminar is mandatory for those registered in CL 702/704.