Calendaric aging is important (most electric vehicles spend more time parking, not charging or driving) but it can also be very tricky. Just consider the data shown below, measured with prototype large-format lithium-ion cells: After 150 days of storage at slightly different conditions, the residual capacity of cell A (red line) looks better than that of cell B (blue line), but during subsequent fast-charging this trend entirely reverses. Apparently, cell capacity is not necessarily a good state-of-health indicator after prolonged calendaric aging. Want to know why? Then check out our recent manuscript in which we highlight the importance of electrolyte conducting salt consumption for the calendaric aging behavior of lithium-ion cells. The paper is open access: https://lnkd.in/geBEsrYh Thanks to all co-workers from BMW Group and Technische Universität München: Louis Hartmann, Lennart Reuter, Lea Wallisch, Anton Beiersdorfer, Dr. Alexander Adam, Daniel Goldbach, Tobias Teufl, Peter Lamp and Hubert Gasteiger. #yeahscience
Thanks for sharing, definitely worth considering
This is an important masterpiece. Congratulations!
Profound knowledge in deep analysis of automotive lithium-ion battery cells
5moIt's so important to do the studies on representative automotive cells. Thanks for sharing 💪💪