Event
MSE Seminar: Dr. David Murdock Stewart, UMD
Wednesday, September 11, 2024
3:30 p.m.
Room 2108 Chemical and Nuclear Engineering Building
Sherri Tatum
301-405-5240
statum12@umd.edu
Solid-State Electrochemistry: from Semiconductors to Batteries and Back Again
Abstract: The push towards safer, more powerful solid-state batteries has provided fertile ground for many new phenomena to be described and studied. Thanks to our deepening understanding of the interplay between ions, electrons, and the host lattice, devices which were previously designed solely for energy storage (batteries and capacitors) are now seen to be capable of information storage/processing and chemical and mechanical sensing/actuation. Employing the same thin film film processing used in the semiconductor industry, we can explore these properties and craft new integrated devices. In this talk I'll first describe the features of solid-state energy storage which lead to this proliferation in capabilities, before showing the thin film experiments and theoretical models that we're using to understand them. While the field of thin film solid-state electrochemistry is still nascent, there are undeniable parallels between it and the development of the semiconductor industry, which has grown into a world-wide force.
Bio: David Stewart received a BS in Physics from the University of Florida, and a PhD in Physics from the University of Maine. He has been working at UMD since 2016 on thin film energy storage systems and fundamental materials science. He began with developing micro-batteries for applications in remote sensors, biomedical devices, and high temperature, harsh environments. Recently he has been pursuing basic science questions in electrochemical interfaces and stress-electrochemistry coupling. In his spare time he enjoys teaching, mentoring, and developing outreach programs for elementary and middle school students.
