DSC scan of a Li-ion coin cell

Scanning data of a commercial coin cell LiR2032 from room temperature to 300°C at 1°C/min, showing multiple reactions during coin cell disintegration. It is evident that the exothermic SEI decomposition is followed by the melting of the separator at approximately 130°C (sharp endothermic event). This endotherm occurs nearly simultaneously with the reaction between electrolyte and lithium. The decomposition of electrolyte and reaction between lithium and binder happen in higher temperature.

DSC measurement of a fully charged LiR2032 coin cellDSC measurement of a fully charged LiR2032 coin cell