What Is The 811 Lithium Battery?

What is 811 lithium battery?

 "80% nickel + 10% drill + 10% manganese", this is the ratio of the positive electrode material of the ternary power battery under the high nickel low drill structure. NCM811, that is, a ternary lithium battery with a content ratio of 80%:10%:10% in the cathode material is nickel, diamond, and manganese. Simply put, it is based on the previous ternary lithium battery to change the electrode material into It was 8:1:1. According to the different consumption ratios of nickel, cobalt and manganese, nickel cobalt manganese ternary lithium batteries can be subdivided into 111 type, 523 type, 622 type and 811 type, etc., and now mainly 523 and 622 types, with single energy The density is 200Wh/kg. The 811 battery can reach 300Wh/kg, which is a 50% increase in energy density compared to the 622 type. This is equivalent to a battery compartment of the same size, which can carry more lithium batteries and greatly reduce the quality of lithium batteries.

This type of power battery has the characteristics of high energy density and can reduce manufacturing costs. It is logical that high nickel low diamond ternary power batteries are favored by new energy automobile manufacturers. The latest news shows that the commercialization of my country's "811" power battery is steadily advancing, and it will be one of the more feasible research directions for high-quality power battery research in the short term.

The low-drilling composition of the power battery industry is a major trend in technological development.

Cost reduction. For terminal OEM customers, NCM811 is the lowest cost per KWh battery. In addition, nickel resources are widely distributed and the price is stable, which is in line with the direction of large-scale industrialization in the future; 2) At present, the industrialization of NCM622 in my country is relatively mature, and it is widely used to support downstream new energy vehicles. NCM811 has started its industrialization prelude and is gradually applied to new models.

The technical threshold of high nickel ternary materials is relatively high, and the requirements in terms of preparation process, equipment and production environment are significantly higher than those of conventional ternary materials. Mass production is also difficult. At present, only Rongbai Technology and Dangsheng A few manufacturers such as Technology and Shanshan Energy can realize the mass production of NCMS11. In addition, based on safety considerations, the certification and testing procedures for high-nickel material products by car companies or power battery companies are more complicated and take longer, which will directly lead to the establishment of first-mover advantages by dominant companies.

Advantages and disadvantages of 811 lithium battery

In the above model, the first number is the "8" in 811 and the "5" in 523 refer to the specific gravity of nickel, and the higher the specific gravity of nickel, the higher the battery energy density, but nickel is also a metal with high activity Therefore, the greater its specific gravity, the lower the safety of the battery. The drill element also plays a vital role in the ternary lithium battery. The drill element can improve the stability of the battery and increase the cycle life of the battery. However, the price of the drill is the most expensive of the three elements, so the battery " "Less drilling" has always been a trend.

In the above model, the first number is the "8" in 811 and the "5" in 523 refer to the specific gravity of nickel, and the higher the specific gravity of nickel, the higher the battery energy density, but nickel is also a metal with high activity Therefore, the greater its specific gravity, the lower the safety of the battery. The drill element also plays a vital role in the ternary lithium battery. The drill element can improve the stability of the battery and increase the cycle life of the battery. However, the price of the drill is the most expensive of the three elements, so the battery " "Less drilling" has always been a trend.