Where is the main application of spraying alumina coating on lithium battery equipment
Information summary：The spraying of alumina coating on lithium battery equipment is mainly applied to battery separators, positive and negative electrode materials, and battery casings. The following is a specific introduction:
1. Battery separator: Traditional polyolefin separators are prone to shrinkage at high temperatures, while aluminum oxide coatings can significantly improve the thermal stability and safety o
The spraying of alumina coating on lithium battery equipment is mainly applied to battery separators, positive and negative electrode materials, and battery casings. The following is a specific introduction:
1. Battery separator: Traditional polyolefin separators are prone to shrinkage at high temperatures, while aluminum oxide coatings can significantly improve the thermal stability and safety of the separator. For example, the 30 nanometer spherical alumina powder can be coated on the surface of the membrane through wet coating or plasma spraying technology, which can reduce the thermal shrinkage rate of the membrane from 50% of pure PE membrane to<5%, while increasing the puncture strength by 300%.
2. Positive electrode material: Coating a 10-20nm thick layer of aluminum oxide on the surface of high nickel ternary materials can prevent the leaching of transition metals, reduce charge transfer impedance, and improve the performance and lifespan of the battery by forming lithiated aluminum oxide to enhance the diffusion rate of lithium ions.
3. Negative electrode material: Coating aluminum oxide on the surface of silicon carbon negative electrode can buffer the volume expansion of silicon particles, extend the cycle life from 100 times to 500 times, and help the commercialization of silicon-based negative electrode.
4. Battery casing: Aluminum oxide coating can increase the hardness and insulation of the battery casing, prevent battery short circuits, and improve its salt spray resistance, protecting the internal structure of the battery from external environmental influences.
Service hotline:
Wechat number：wechat number
National Service Hotline
Service hotline：0512-69211270
Company address：1188 CUIZHOU Road, Lili Town, Wujiang District, Suzhou
contacts：Deng Guangcai 13912602396
contacts：Long Yanqiao 15995489385
CN
EN
Add wechat
Contact us
Telephone consultation