Thursday, June 06, 2024

Commercial lithium-ion batteries degrade between 20-60% cycled over 7 years

A note or reminder to owners of EVs! Then there is the risk of spontaneous combustion etc.!

"In this webinar, we detail our ongoing study of battery-cycle aging at varied ambient temperature, discharge rate, and state-of-charge range for three different positive electrode chemistries: lithium iron phosphate, nickel cobalt aluminum oxide, and nickel manganese oxide.

These commercial cells have been cycled for more than seven years and their capacity retention spans 80% to 40%. We cover trends that occur before and after 80% capacity, initial materials characterization, knee point occurrence, and sudden cell failure. This work represents the broadest assessment of commercial Li-ion battery aging in the open literature."

Physics World

No comments: