Advantages and disadvantages of 811 lithium battery

The first number, which is 8' in 811 and 5 in 523, refers to the specific gravity of nickel. The higher the specific gravity of nickel, the higher the energy density of the battery, but nickel is also an element with high metal activity, so its specific gravity The safety of the large battery is also lower. The drill element also plays a crucial role in the ternary lithium battery. The drill element can improve the stability of the battery and add the cycle life of the battery, but the price of the drill is The most expensive of the three elements, so it has always been a trend to reduce the number of batteries. NCM811 batteries also have hidden dangers. With the increase of nickel content, the stability of the positive electrode material decreases. It is important to show the current cycle of charging and discharging. The capacity loss and the accelerated degradation of the capacity in high-temperature environments will not only reduce the service life of the 811 battery, but also increase the risk of spontaneous combustion caused by thermal runaway. This type of battery can ensure the energy density of the battery to a certain extent. Improve battery life, cycle life, safety, etc. It is reported that the unit cost of a ternary cell made of 811 material can be reduced by about 7% compared to 523 cells. This is counted as the cost of the battery. The overall unit wh cost can be reduced by more than 8%. In NCM batteries, according to the different contents of nickel diamond and manganese, NCM materials can be divided into NCM111, NCM523, NCM622, NCM811, etc., among which the following number represents nickel diamond The proportion of manganese. From the perspective of industry trends, the current domestic mainstream power cathode material is NCM523. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact and delete the previous article: Lithium battery processing process flow explain