Microporous Copper/Aluminum Foil Material

1. Improving battery safety

It has been tested by multiple battery production enterprises and verified its role in safety, and has also been recognized by European users for testing.

2. Directly and effectively improving the specific energy of lithium batteries

Foil of the same specification can reduce the weight of microporous foil; At the same surface density, the positive and negative compaction density increases (some materials are filled into the pores).

3. Effectively improving the rate performance of lithium batteries

For conventional foil lithium batteries, the migration of lithium ions diffuses towards the ear end through the two-dimensional direction of the foil. After the foil passes through the hole, the diffusion path of lithium ions can be transformed into three-dimensional and omnidirectional penetration, and the contact surface between the positive and negative electrode materials and the foil can be increased, reducing the migration radius of lithium ions and improving conductivity efficiency.

4. Effectively reducing the internal resistance of lithium batteries

The use of microporous foil can effectively reduce internal resistance.

5. Improve the wettability of electrolyte

The impregnation efficiency of lithium battery electrolyte after injection can be greatly improved, which can improve the production efficiency by more than 50%, and ensure the consistency of impregnation by 100%.

6. Increase the surface adhesion between the slurry and the fluid collector

The surface adhesion of the foil material has been improved, and through the material between the pores, the positive and negative electrode plates are coated with both sides of the material to form an "H" shaped bite state, greatly reducing the probability of electrode plate detachment.

7. Improve the bending flexibility of the electrode, making it more suitable for the application of flexible batteries

8. Reduce battery gas production

During the processing of microporous aluminum foil, the surface of the foil is cleaned twice to remove the residual grease on the surface and reduce the side reaction with the electrolyte.

9. No need to change production processes and equipment

The use of microporous foil meets the requirements of existing production processes such as coating and rolling, without the need for adding or replacing equipment.