The electrode sheet is the energy storage core of a battery, and during the preparation process, the electrode sheet undergoes a drying step. The duration of the drying time can significantly affect the battery's performance.
Excessive drying time may lead to several issues:
1. Prolonged drying time may cause the active materials in the electrode sheet to excessively dry, resulting in a loss of activity. Active materials are crucial components for storing and releasing electrical energy in the battery. If activity is lost, it can impact the battery's performance, accelerate capacity decay, and shorten the battery's lifespan.
2. Extended drying time may result in an incomplete or unstable interface between the electrode and electrolyte. The quality of the interface is crucial for the battery's conversion efficiency and cycling stability. Poor interface formation can adversely affect the battery's performance.
3. Lengthy drying time may lead to structural changes in the electrode material. The structure of the electrode material determines the capacity for charge transfer and storage. Any structural changes can affect the battery's performance.
Insufficient drying time may also have negative effects on battery performance:
1. Reduced battery capacity: Insufficient drying time for the electrode sheet may leave residual moisture inside the battery, affecting its capacity and shortening its usage time.
2. Premature entry into the production process: Short drying time may result in incomplete drying of the electrode sheet, leading to issues in the battery during the production process, affecting overall quality.
3. Internal stress in the battery: Short drying time may leave residual moisture inside the battery, and in subsequent manufacturing processes, the moisture may evaporate, causing internal stress and affecting the battery's performance.
4. Decreased battery lifespan: Inadequate drying time may leave residual moisture in the battery. As the number of charge-discharge cycles increases, the slow chemical reaction inside the battery may affect its lifespan.
