ECS is proud to present Dr. Dan Steingart via webinar on December 2, 2020, at 1000h ET.
Without Sound and Fury, Signifying Something: Acoustics and Batteries
Dr. Dan Steingart
Department of Mechanical and Aerospace Engineering
Date: December 2, 2020
Time: 1000 – 1100 ET
Though classic battery engineering is firmly rooted in chemical engineering and chemistry, the last decade has seen a significant increase in research on mechanical and chemo-mechanical properties of batteries for both reversible and irreversible behaviors. The characterization of structural evolution and degradation on a cycle and calendar basis is necessary to increase the lifetime of high energy density cells while decreasing the cost. A range of chemistry-specific methods have been applied to probe chemical mechanical couplings. In theory, and increasingly in practice, acoustic interrogation reveals mechanical correlations across any chemistry and cell form factor due to its exploitation of the required mass balances for cell operation. Beyond being generalizable to all battery chemistries, acoustic methods are scalable, high rate, and readily operando: sub-ms acquisition times are possible on full cells using desktop equipment.
In this webinar, the physical principles of electrochemical acoustic interrogation are introduced, and example experiments described for lithium ion, lithium metal, and zinc alkaline systems. Topics of discussion are: Statistical correlations of acoustic behavior and “battery state” (state of charge, state of power, state of safety, state of health); newer studies on structure and property extraction, emphasizing degradation due to thermal and fast charge events; and current spatial and temporal limits, as well asymptotic capabilities.
Benefits of attending the webinar
- Introduction to electrochemical/acoustic interrogation
- Generalizing mechanical behaviors of batteries through dynamic strain analysis
- Learning about the high rate, low cost, operando diagnostics, and characterization of full cells
Dr. Dan Steingart
Daniel Steingart is a Visiting Professor at Princeton University and the Stanley Thompson Associate Professor of Chemical Metallurgy and Chemical Engineering and co-director of the Columbia Electrochemical Energy Center, Columbia University. His group studies the systematic behaviors of material deposition, conversion, and dissolution in electrochemical reactors focusing on energy storage devices. Steingart’s current research looks to exploit traditional failure mechanisms and interactions in batteries, turning unwanted behaviors into beneficial mechanisms. His efforts in this area over the last decade have been adopted by various industries and have led directly or indirectly to five electrochemical energy related startup companies. The latest is Feasible, an effort dedicated to exploiting the inherent acoustic responses of closed electrochemical systems. Steingart joined Columbia Engineering in 2019 from Princeton University where he was Associate Professor in the Department of Mechanical and Aerospace Engineering and the Andlinger Center for Energy and the Environment. Before that, he was Assistant Professor in Chemical Engineering at the City College of the City University of New York, and an engineer at two energy-related startups. He received his PhD from the University of California, Berkeley, in 2006.