Dr. Reed Wittman and Dr. Yuliya Preger presented in the Electrochemical Society’s regular webinar series on June 12, 2024. They presented a summary of the long-term Li-ion cycling work that the safety and reliability team has been conducting since 2017. The talk titled “Degradation of Commercial Lithium-Ion Cells Beyond 80 Percent Capacity” covered the cycling of Li-ion cells down to 80% capacity, the materials characterization done at 80% capacity, and the cycling of the remaining cells to an end of life of 40% capacity. The cycling beyond 80% capacity is notable as most studies to date stop at this value. Cycling beyond this metric in our study allows for better insight into the true useful life of different battery chemistries for applications like grid energy storage or remote/off grid applications.
With the presentation, Drs. Wittman and Preger highlighted the attendees the leading role Sandia plays in long term reliability of grid energy storage to make a more secure and reliable energy system. The webinar had a total attendance of 217 people from across the ECS membership. A recording of the presentation will be made public for people to view at their discretion.
The ECS webinar series is a well-attended event put on by the Electrochemical Society (ECS) which is the largest professional organization for electrochemistry. It has a broad audience capturing students, academics, researchers, and members of industry in its attendance. The speaking slots are invite-only, and our invitation is a recognition of the quality of work the Sandia Energy Storage team does and the presence it has in the community.
This material is based upon work supported by the U.S. Department of Energy, Office of Electricity (OE), Energy Storage Division.