6LR61 battery

　　How to control the porosity of materials to balance compaction density and battery performance

　　1. Choosing appropriate raw materials and formulations: selecting positive electrode materials with appropriate true density and chemical composition, as well as appropriate amounts of conductive and bonding agents, all of which can affect porosity.

　　2. Optimizing particle size distribution: By adjusting the particle size distribution of the positive electrode material, particle stacking can be optimized to reduce the gaps between large particles, while retaining enough small particles to fill the gaps, thereby controlling porosity.

　　3. Adjusting compaction process: By changing the compaction pressure, speed, and temperature, the deformation and arrangement of material particles can be affected, thereby controlling the porosity of the polarizer.

　　4. Thickness and uniformity control of polarizer: During the coating and compaction process, maintain the uniformity of polarizer to avoid uneven porosity caused by inconsistent thickness.

　　5. Use appropriate adhesive: The type and amount of adhesive will affect the structure and porosity of the polarizer. Choosing the appropriate adhesive can improve the structural stability of the polarizer while reducing porosity.

　　6. Drying process of polarizer: Ensure that the polarizer is thoroughly removed of solvents and moisture during the drying process to avoid residual liquid in the pores affecting battery performance.

　　7. Post treatment of electrode plates, such as heat treatment or chemical treatment, can improve the structure of electrode plates, reduce porosity, and enhance the electrochemical performance of materials.

　　8. Avoid excessive compaction: Excessive compaction can cause particle breakage, increase internal resistance, and reduce battery performance. It is necessary to find a suitable compaction density to maintain the charging and discharging performance and cycling stability of the battery.

　　9. Use porosity testing methods such as mercury intrusion porosimetry, nitrogen adsorption, and liquid absorption to regularly measure the porosity of electrode plates to ensure they meet design requirements.

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