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What is the white oil in the lithium battery separator?
The lithium battery separator is a special polymer film that separates the lithium ion electrolyte from the positive and negative electrodes, preventing electrolyte mixing, as well as problems such as short circuit and overcharging of the battery.
The white oil in the lithium battery separator plays a key role in lithium-ion batteries. Specifically, the main points are as follows:
1. Prevent fusing
Overcharging of lithium batteries will cause the internal temperature of the battery to rise. If the temperature is too high, it will damage the internal components of the battery and even cause fuses. The white oil in the lithium battery separator can form a certain degree of viscosity and lubricity at high temperatures, slowing down the flow rate of the electrolyte, thus delaying the heating process of the battery, preventing overheating inside the battery, and protecting the safety of the battery.
2. Reduce self-discharge
Lithium batteries will also self-discharge when not in use, resulting in loss of power. The white oil in the lithium battery separator can reduce the self-discharge rate, thereby reducing power loss.
3. Improve battery performance
The white oil in the lithium battery separator can also reduce the internal resistance of the battery and improve the battery's power transmission efficiency, thereby improving battery performance.
In general, the white oil in the lithium battery separator plays a very important role. It can improve the safety of lithium batteries, extend the service life of the battery, and improve the performance of the battery. Therefore, in the production process of lithium batteries, the white oil in the separator has become more and more important.
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