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　　What's wrong with sodium ion batteries?

　　In short, sodium ion batteries are not new. They were born in the 1970s, but due to their lower energy density than lithium-ion batteries, they have not been given much attention.

　　Why did the Ningde era bring it again? Due to the rapid development of the electric vehicle industry, the global shortage of lithium resources has been rapidly exposed, and the price of lithium carbonate has been rolling upwards, reaching 1 million yuan per ton, several times higher than before. Although the large-scale production of lithium batteries has reduced costs, the progress of technology cannot keep up with the rising speed of raw material prices. Finally, the price of lithium batteries will rise again, and the price of electric vehicles will also rise, which will inevitably affect the popularity of new energy vehicles. Sodium reserves are 400 times higher than lithium. For the battery industry, it can be described as inexhaustible and inexhaustible. Without resource limitations, there is naturally no price issue.

　　So CATL changed its curriculum and moved to the sodium ion battery track.

　　With the continuous iteration of technology, the biggest drawback of sodium ion batteries - energy density - is gradually improving. The energy density of the sodium ion battery of domestic Chiqiao Hainan Company has reached 140Wh/kg. How about CATL, as a leader in lithium batteries, lagging behind? Sure enough, the first shot was at 160Wh/kg, compared to the most popular lithium phosphate battery at 180Wh/kg. kg， Very close. And there are many advantages such as faster charging speed, better safety, lower low-temperature performance, and lower long-term costs. Although electric vehicles are still a bit low, there is no problem with energy storage and low-speed electric vehicle energy.

　　The key is the second-generation sodium ion battery that the boss of Ningde Times passed by last time. Ningde Times did not say what exactly happened, it should involve commercial secrets. But according to the disclosed information, the energy density of this second-generation sodium ion battery can reach 200Wh/kg, which has surpassed that of lithium iron phosphate batteries. For an investor, this is the most valuable information released throughout the entire event.

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