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6. Power type nickel cobalt lithium manganese material

The route of power lithium batteries has always been highly controversial, so routes such as lithium iron phosphate, lithium manganese oxide, and ternary materials have been adopted. The domestic power lithium battery route is mainly based on lithium iron phosphate, but with Tesla's global popularity, its use of ternary material routes has caused a craze.

Although lithium iron phosphate has high safety, its weak energy density cannot be overcome, and new energy vehicles require longer range. Therefore, in the long run, materials with higher capacity will replace lithium iron phosphate as the next generation mainstream technology route.

The nickel cobalt lithium manganese oxide ternary material is most likely to become the mainstream material for the next generation of power lithium batteries in China. Domestic electric vehicles such as the Beiqi E150EV, Jianghuai IEV4, Chery EQ, and Blue have successively launched the ternary route, with a significant increase in unit weight density compared to lithium iron phosphate batteries.

7. Coated diaphragm

Diaphragms are crucial for the safety of lithium-ion batteries, as they require good electrochemical and thermal stability, as well as high wettability of the electrolyte during repeated charging and discharging processes.

Coated diaphragm refers to the application of adhesives such as PVDF or ceramic alumina on the base film. The purpose of coating the diaphragm is:

1. Improve the heat and shrinkage resistance of the diaphragm to prevent large area short circuits caused by diaphragm shrinkage;

2. The coating material has low thermal conductivity, preventing certain thermal runaway points in the battery from expanding and forming an overall thermal runaway.

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