Influence of different discharge levels on the mechanical recycling efficiency of lithium-ion batteries

•Investigation of different cell chemistries and designs on the depth of discharge.•Properties of functional units depend on the depth of discharge.•Separation of separator foil as single fraction is not always feasible.•Black mass of cells discharged into pole reversal shows higher Cu content.•Infl...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Waste management (Elmsford) 2023-12, Vol.172, p.1-10
Hauptverfasser: Kaas, Alexandra, Wilke, Christian, Vanderbruggen, Anna, Peuker, Urs A.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:•Investigation of different cell chemistries and designs on the depth of discharge.•Properties of functional units depend on the depth of discharge.•Separation of separator foil as single fraction is not always feasible.•Black mass of cells discharged into pole reversal shows higher Cu content.•Influence of discharge is independent of cell chemistry or cell design. Prior to the mechanical processing, discharging is necessary to prevent hazards. While the discharging process, different phenomena can occur changing the characteristics of the functional units of LIB. This study reveals the influence on the mechanical recycling and the obtained material when different discharge levels are used for various cells differing in their cell chemistry. It shows that for different cells, for example, copper deposits happen on the cathode as well as active material deposits on the separator foil. These new properties deteriorate the black mass quality and show contamination of the products with other material streams. It is being tested whether established sub-processes are suitable. However, it becomes clear that further recycling steps (e.g. flotation, hydrometallurgy) can be influenced as well as their product quality and element specific yield.
ISSN:0956-053X
1879-2456
DOI:10.1016/j.wasman.2023.08.042