Revealing the Impact of High Current Overcharge/Overdischarge on the Thermal Safety of Degraded Li-Ion Batteries

Table 2

Test procedures settings.

Test type	Test procedures
Reference performance test (25°C)	(1) Constant current (CC) charging to 4.2 V under 1/3C and then constant voltage (CV) charging under 4.2 V until current decreased to <1/20C; (2) Rest for 30 mins; (3) Discharging to 2.5 V at 1/3C; (4) Rest for 30 mins; Note: The reference performance test lasts for three cycles.
2C cycling at 25°C	(1) Constant current (CC) charging to 4.2 V under 2C and then constant voltage (CV) charging under 4.2 V until current decreased to <1/20C; (2) Rest for 30 mins; (3) Discharging to 2.5 V at 2C; (4) Rest for 30 mins