What is the approximate cost of a ternary lithium battery for electric vehicles?

The full name of ternary lithium battery is a lithium ion secondary battery that uses ternary polymers such as nickel cobalt manganese lithium or nickel cobalt aluminum aluminate as the cathode material. The ternary refers to the three metals containing nickel, cobalt, manganese or aluminum. The elemental polymer is used as the positive electrode in a ternary lithium battery; lithium refers to the electrolyte whose electrolyte is mainly lithium hexafluorophosphate, and the negative electrode material is generally graphite. At present, the batteries used in electric vehicles are basically ternary lithium batteries. In the first 8 batches of 296 electric vehicles, there are a total of 221 models of ternary lithium batteries. According to the data of the international investment decomposition agency UBS, the current domestic price of ternary lithium batteries is 1042 yuan per kWh, which is the highest in electric vehicle sales in 2018. Take a BYD Yuan EV as an example, a 42-degree battery costs 44,000. Statistics from the Power Lithium-ion Battery Research Department show that in March 2019, my country’s new energy vehicle power lithium-ion battery installed capacity was about 5.09GWh, a year-on-year increase of 146.3% and a month-on-month increase of 126.69%. Among them, the installed capacity of ternary material lithium batteries is 3.89GWh, accounting for 76.47% of the market share of new energy vehicles, an increase of six percentage points compared with the same period last year, showing a unique trend, and the mainstream status is difficult to shake. Among the most used ternary lithium batteries, nickel-cobalt-manganese materials are the most mainstream, which is also the main product of most domestic battery companies. For these three chemical materials, nickel has played a key role in increasing the density of batteries, and batteries with a higher proportion of nickel will be the trend, while cobalt will account for a greater proportion of cost. 1. Nickel cake: Nickel is an active metal in the subgroup. Its main purpose is to increase the volumetric energy density of the battery. It is an important breakthrough to increase the cruising range, but too much content will cause nickel ions to occupy the position of lithium ions, resulting in a decrease in capacity. 2. Cobalt powder: Cobalt is also an active metal in the subgroup, which can inhibit the mixing of cations, thereby improving the stability and extending the life of the battery. In addition, it also determines the charging and discharging speed and efficiency of the battery. , But too high cobalt content will cause the actual capacity to decrease. 3. Aluminum or manganese: The purpose of manganese or aluminum is to reduce material costs. After all, the nickel and cobalt mentioned above are very expensive and rare metals, and can improve the safety and stability of the battery. Faced with increasing costs, global battery suppliers are trying to reduce the content of cobalt in ternary batteries. They have changed the formula ratio of battery cathode materials, changing the ratio of nickel-cobalt-manganese or nickel-cobalt-aluminum in ternary batteries from 6:2:2 was changed to 8:1:1. Many power lithium-ion battery companies in my country are also deploying high-nickel ternary batteries. High nickel and low cobalt are on the one hand to increase energy density and on the other hand to reduce costs. From the point of view of manufacturing costs, the cobalt element necessary for ternary lithium batteries is relatively small in my country, and most of them are imported from overseas, which is greatly affected by market fluctuations. Therefore, the cost of ternary lithium batteries will inevitably remain high, while lithium iron phosphate The raw materials required for the battery do not need to be imported, the supply is sufficient, the price is stable, and the cost is relatively low. The ternary lithium battery has the advantages of high energy density and good cycle performance. It is more suitable for the future development trend of new energy vehicle batteries, suitable for northern weather, and the battery is more stable at low temperatures. Ternary lithium batteries have the incomparable high energy density and low temperature resistance characteristics of lithium iron phosphate batteries, and are better than lithium iron phosphate batteries. In the future of the development of new energy vehicles, ternary lithium batteries will deal with safety and cost issues. It can be used as a new energy storage device for automobiles in the future. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the effects of the particle size distribution of lithium battery anode materials on battery performance?