High purification protective film is an important material used in the preparation process of lithium-ion batteries, with the following advantages and characteristics:

Advantages:

1. High purity: High purity protective films are usually prepared using high-purity materials, which can effectively reduce the impact of impurities inside the film on battery performance and improve the purity of the battery.

2. Excellent isolation performance: The high purification protective film has good isolation performance, which can effectively isolate the positive and negative electrodes, avoid short circuits and electrolyte leakage, and improve the safety of the battery.

3. High temperature resistance: High purification protective films usually have good high temperature resistance, can withstand high temperature environments during battery operation, are not easily deformed or fail, and protect the internal battery structure.

4. Chemical stability: The high purification protective film has good stability to the chemical substances inside the battery, is not easily corroded by electrolytes and other chemical substances, and extends the service life of the film.

5. Excellent encapsulation effect: The high purification protective film has a good encapsulation effect, which can effectively prevent external moisture, impurities and other substances from entering the interior of the battery, ensuring the stability and reliability of the battery.

Features:

1. High transparency: The high purification protective film has high transparency and will not affect the optical performance of the battery. At the same time, it can observe the internal structure and working status of the battery.

2. Flexibility: High purification protective films usually have a certain degree of flexibility, which can adapt to the bending and deformation of battery components, and are not easily broken or fractured.

3. Uniformity: The preparation process of high purification protective film is excellent, with a uniform and smooth surface, and is not prone to problems such as bubbles and wrinkles, ensuring the consistency and stability of the film.


Overall, high purification protective films have the characteristics of high purity, excellent isolation performance, high temperature resistance, chemical stability, excellent packaging effect, as well as high transparency, flexibility, and uniformity. They are one of the indispensable key materials in the preparation process of lithium-ion batteries.