Specializing in the technology development, production and sales of high-performance lithium-ion batteries and sodium-ion batteries
The function of lithium-ion battery separator
Release time:
2024-10-18
The main functions of lithium-ion battery separators include separating positive and negative electrodes, preventing short circuits, allowing lithium ions to pass through, and affecting the safety performance and cycle life of the battery.
Separating positive and negative poles to prevent short circuits: One of the main functions of lithium-ion battery separators is to separate the positive and negative poles of the battery, preventing them from directly contacting and causing short circuits. This design ensures the safety of the battery during charging and discharging, avoiding internal short circuits caused by positive and negative electrode contact, thereby protecting the battery from damage.
Allow lithium ions to pass through: The separator is designed with a microporous structure that allows lithium ions to move between the positive and negative electrodes, thereby achieving the charging and discharging function of the battery. This structural design ensures efficient energy conversion of the battery, which is the key to its normal operation.
Affects the safety performance and cycle life of the battery: The performance of the separator directly affects the safety performance and cycle life of the battery. Excellent separator materials can improve the capacity, cycling performance, and safety of batteries. For example, using high-strength thin film polyolefin porous membrane as the separator material, this material not only has sufficient mechanical properties, but also can withstand organic solvent systems, thereby improving the overall performance of the battery.
In summary, lithium-ion battery separators play a crucial role in batteries. They not only ensure the safe operation of the battery, but also directly affect the charging and discharging efficiency, cycle life, and overall performance of the battery. Therefore, selecting appropriate separator materials and technologies is of great significance for improving the performance of lithium batteries.
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