Sep 24, 2020
In partnership with CART, Indian Institute of Technology Delhi
Lithium-ion Batteries - Basics of Chemistry and Safety
This lecture provides a basic understanding of Li-ion battery chemistry as well as the safety challenges associated with it.
Date & Time:
Sep 24, 2020 7:00pm IST
Lithium-ion (Li-ion) batteries first commercialized in the early 1990s, provide power in a myriad of ways in our lives. They are ubiquitous: more than a billion rechargeable li-ion battery cells are produced each year for the consumer electronics market alone. This dependence will only increase as new technologies require lightweight, powerful energy supplies.
But while these batteries provide a lot of benefits, they also come with safety challenges. Li-ion cells have the highest energy density of the commercially available rechargeable cell chemistries and associated with this high energy density is also a very high propensity for these batteries to go into thermal runaway under off-nominal and abusive conditions. Additionally, as the energy and power density of Li-ion batteries steadily increase in response to market demands, safety continues to remain a critical challenge. Therefore, cells and batteries need to be designed for performance and safety. Equally important are the safety tests and standards for various end-use cases and environmental conditions.
In this session, Dr. Judy Jeevarajan will provide a basic understanding of the Li-ion battery chemistry as well as the causes of hazards and the challenges that come with the growing size of the batteries of this chemistry.
Dr. Judy Jeevarajan is the Research Director of Electrochemical Safety for Underwriters Laboratories Inc. With over 23 years of experience in the area of batteries and a primary focus on the lithium-ion chemistry, she specializes in battery safety research including safety trends in aged li-ion cells and modules, thermal runaway propagation in lithium battery systems, fire suppressants for li-ion battery fires, and consumer battery safety.