Battery Safety Science Webinar Series: Fast Charging of Lithium-ion Cells: Pitfalls and Possibilities
Hosted by Underwriters Laboratories, this webinar series features guest experts and is dedicated to the advancement of technical information on battery safety. The mission of the Electrochemical Safety group is to advance safer energy storage through science.
During this one-hour webinar, Dr. Daniel Abraham, Senior Materials Scientist with Argonne National Laboratory will discuss modes of cell aging during repeated exposure to high currents, with particular focus on electrode behavior. Results from cells containing layered oxide cathodes and graphite anodes will be highlighted. The use of a microprobe reference electrode to monitor the onset of Li plating conditions will be examined. Methodologies to detect Li-plating and investigate lithium concentration gradients that develop in electrodes will also be discussed. These phenomena cause non-uniform degradation across the electrodes thus making it difficult to predict cell life.
Fast charging of lithium-ion batteries (LIBs), being developed for electric vehicles, is needed to meet customer demands of time-parity with today’s gasoline-powered cars. The U.S. Department of Energy (DOE) has set a target charging time of 15 minutes (4C rate) as a near-term goal, further indicating that a 5-minute charge (12C rate) could be a long-term goal. This presentation is an overview of extreme fast charge studies being conducted at Argonne National Laboratory as part of projects funded by the U.S. DOE.
Dr. Abraham has authored over 140 articles in peer-reviewed journals that span the various frontier areas of lithium battery research. These areas include fast charging, crystal structure transformations in electrode materials, silicon electrode development, solid electrolyte interphase (SEI) formation/dissolution mechanisms, electrode stress evolution, electrode and particle coatings, electrolyte additives, and electrochemical modeling. His work enables the development of materials and components that enhance battery performance, life, and safety.