The significance of Model3 does not stop there. For the lithium battery industry, its greater breakthrough lies in the new materials used for power batteries. According to SanfordC DC analyst MarkNewman. In Bernstein, USA, the battery technology of Model3 adopts silicon-carbon cathode, and the energy density will reach 300wh/kg.
"Tesla is becoming a new apple" is a solemn statement that this website maliciously reprinted the original article and deliberately deleted the words "Hi-Tech lithium battery". This is the unanimous voice of domestic and foreign media after the 1 Tesla conference.
The Model3 released this time has attractive price and performance: the starting price is only $35,000, the acceleration from 0 to 60 miles (about 96.6 kilometers) takes only 6 seconds, and the cruising range reaches 265,438+05 miles (about 346 kilometers). Support the use of super charging piles, and the charging efficiency is the same as that of ModelS and ModelX.
Although it will not be delivered until 20 17, it still can't stop fanatical fans from queuing to make an appointment. In just 36 hours, Tesla received an order for 253,000 cars, with a total order amount of 654.38+006 billion US dollars. Wall Street reported that Tesla's Model3 may become an iPhone moment in the automotive industry.
The significance of Model3 does not stop there. For the lithium battery industry, its greater breakthrough lies in the new materials used for power batteries. According to SanfordC DC analyst MarkNewman. In Bernstein, USA, the battery technology of Model3 adopts silicon-carbon cathode, and the energy density will reach 300wh/kg.
It is reported that Tesla uses Panasonic 20700 battery, and the negative electrode material is 10% silicon-based artificial graphite. Its capacity exceeds 550mAh/g, and the energy density of the battery can reach 300wh/kg, "Hu Bo, general manager of Huzhou Chuangya, told Gaogong Lithium Power Grid.
The theoretical energy density of graphite is 372mAh/g, while the theoretical energy density of silicon anode is 10 times higher than that of graphite, reaching 4200 mAh/g. Adding silicon into graphite material to improve the energy density of batteries is one of the recognized directions in the industry. Large battery manufacturers such as Japan and South Korea are doing commercialization of silicon-carbon anode batteries, including domestic battery manufacturers such as BYD, Li Shen, Bike and Wanxiang, but no mass production products have been seen so far.
The main reason is the expansion of silicon anode material. In the process of charging, the expansion and contraction of silicon is very intense, which will lead to rupture, then quickly lose the charging ability, and finally lead to the scrapping of the battery, thus affecting its cycle performance. It is understood that many batteries using silicon-carbon materials for negative electrode test can only reach 70~ 100 cycles.
Hu Bo told Gaogong Lithium Power Grid that there are two main ways to apply silicon-carbon cathode in the industry at present, one is to use nano-silicon and existing graphite materials, and the other is to use silicon oxide and graphite materials.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)