Aging and Post-Mortem Analyses of Lithium-Ion & Sodium-Ion Cells
Online seminar
VA-00716
Participation fee: 785 €
Seminar language is english
The conference language is English. The service life of battery cells is limited by aging mechanisms on the cell, electrode, and material level. These aging mechanisms can be elucidated through cell disassembly and subsequent material characterization (so-called tear-down or post-mortem analysis). The focus in this seminar is on commercial lithium-ion cells and sodium-ion cells.
Speakers
Assistant Professor Dr. rer. nat. Thomas Waldmann
Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW), Ulm
Agenda
Online seminar, 10:00 a.m. to 6:00 p.m.
- Ageing and post-mortem analyses
- Definition of General Terms
- Typical materials & cell designs (cylindrical, pouch, prismatic, tabless design) of commercial state-of-the-art Li-ion & Na-ion cells
- Post-mortem methodology (environmental Conditions, state-of-charge/safety, cell opening, sample preparation)
- Analytical methods (including SEM, EDX, ICP, GD-OES, CT, etc.)
- Examples of cell tear-downs of commercial Li-ion & Na-ion cells (including large cells)
- Aging mechanisms at the material, electrode, and cell level (e.g., Li-plating/Na-plating, SEI growth, gas formation, degradation of the Si-compound, particle/electrode cracks, jellyroll deformation, pore clogging, transition metal dissolution, EMSI, …)
- Inhomogeneous aging effects in cells, cell heating behavior due to current flow, temperature gradients
- Relationship between safety and aging (dendrite formation, exothermic reactions, reintercalation of Li into graphite)
- Change of aging mechanisms during aging
- Overcharging and deep discharge
- Effect of fast charging on aging, Optimized fast-charging methods to avoid lithium-plating
- Optimizing operational windows for improved life time
- Extending battery life through targeted prevention of aging mechanisms
- Safety of aged cells, second-life applications
Objective
This seminar provides an overview of the state-of-the-art knowledge in aging mechanisms of commercial lithium-ion and cells. It explains ways to improve battery life based on optimal operating windows, fast-charging methods, and cell designs, and offers insights into post-mortem analyses.
Circle of participants
- Interested parties, experts and managers from industry (R&D, quality assurance) as well as
- Scientists and young academics (doctoral candidates, post-docs, students)