GB/T 38824-2020 in English

Interpretation of the core content of the standard

GB/T 38824-2020 systematically regulates soft carbon (Soft Carbon) used as negative electrode materials for lithium-ion batteries for the first time, defining soft carbon as electrochemical performance test and requires the use of a button half-cell test system, including:

• Test environment: 25℃ constant temperature
• Current setting: 0.6mA discharge to 5mV→0.3mA discharge to 5mV→0.6mA charge to 2.0V
• Data processing: The error of parallel samples must be ≤5mAh/g, and abnormal data must be retested

Suggestions for the implementation of the standard

Manufacturers need to pay special attention to the following:

1. The packaging requires the use of 650mm×950mm plastic bag + outer box double layer protection, and the weight of a single piece is 25±0.1kg
2. The storage environment must be kept dry and ventilated, and the packaging must be protected from damage during transportation
3. The electrochemical test must be strictly carried out in accordance with Appendix A, and special attention must be paid to the oxygen content in the glove box (≤1×10⁻⁶)