Products Description
Due to the single-sided nature of the electrode sheet, curling may occur after rolling. Therefore, rolled electrode sheets for shipment are controlled to ensure that the compaction pressure is sufficient to prevent curling.
Rolling can increase the compaction density of the electrode sheet, enhance electronic conductivity, and improve adhesion.
1. Before using the electrode sheet, it should be rolled. Customers purchasing unrolled electrode sheets need to arrange rolling themselves.
2. Surface density should be determined based on actual weighing results.
3. Before placing into the glove box, the punched electrode sheets need to be vacuum dried at 105℃ for 4 hours.
4. The surface density of the coating does not include the current collector.
5. Theoretical specific capacity (mAh/cm2) = Surface density (mg/cm2) * Active material ratio * Specific capacity (mAh/g) ÷ 1000.
6. Theoretical amount of active material (mg) = Surface density (mg/cm2) * Active material ratio * Small circular area (cm2).
7. Actual weight calculation of active material (mg) = (Weight of small circular piece (mg) – Surface density of current collector (mg/cm2) * Area of small circular piece.
Advantage:
Initial charge-discharge test conditions: Temperature 25℃, first charge at 0.1C constant current to 4.2V, then constant voltage charge until current is less than 0.02C, followed by discharge at 0.1C constant current to 2.5V.
Rate test conditions: Temperature 25℃, first charge at 0.5C constant current to 4.2V, then constant voltage charge until current is less than 0.02C, followed by constant current discharge at rates of 0.1C/0.2C/0.5C/1C/2C/3C to 2.5V.
Cycle test conditions: Temperature 25℃, first charge at 0.5C constant current to 4.2V, then constant voltage charge until current is less than 0.02C, followed by consta
Storage:
The material used for this electrode sheet is energy density type graphite, and the electrolyte used during testing is graphite intercalation electrolyte.
The electrode sheet requires rolling (with compaction pressure recommended to be at the lowest parameter within the compaction range of the electrode sheet), baking conditions at 105℃ for 4 hours, followed by an 8-hour standing period after injection. After constant current charging of the positive electrode sheet, a constant voltage of 0.02C is required to stop, and the sealing pressure after electrolyte injection should be 1300psi.Note: After rolling one side of the electrode sheet, it may curl easily. Flattening and packaging may result in creases.
