Packaging, Transportation, and Storage

1. Vacuum storage or double-sealed packaging in a glove box, especially for high-nickel and sodium cathode materials. Improper storage can increase battery internal resistance.

2. Electrodes not rolled: Roll the electrodes according to the recommended compaction density.

3. Coating surface density must be determined based on actual weighing results. Coating surface density does not include the current collector.

4. Actual weighing calculation of active material mass (mg): = (Small disc weight mg - Current collector surface density mg/cm² * Small disc area cm²) * Active material ratio

5. Theoretical active material amount (mg): = Coating surface density mg/cm² * Active material ratio * Small disc area cm²

6. Theoretical surface capacity mAh/cm²: = Coating surface density mg/cm² * Active material ratio * Granular capacity mAh/g ÷ 1000

7. When calculating granular capacity, calculate based on the actual weighed amount of active material. Due to tolerances in coating surface density, the actual weighing shall prevail.

8. Creases: Single-sided electrodes are prone to curling after rolling. Flattening and packaging may cause creases.