What is a ternary battery, and which three yuan is the 'three yuan'?

First of all, the full name of ternary battery is ternary polymer lithium battery, which refers to the lithium battery that uses nickel cobalt manganese lithium ternary positive electrode material or nickel cobalt lithium aluminate ternary positive electrode material, so this battery is also referred to as NCM battery (nickel cobalt manganese lithium battery) or NCA battery (nickel cobalt aluminum oxide battery), its ternary refers to the nickel (Ni), cobalt (Co), manganese (Mn) or aluminum (Au) in the positive electrode ). In my country, most of the ternary batteries currently in vogue are NCM batteries, because NCA batteries have not been processed in large quantities in my country. Ternary lithium batteries have two notable characteristics: 1. Large energy density and higher voltage; 2. Battery performance can be adjusted by adjusting the NCM ratio of the cathode material. Compared with traditional iron-lithium batteries, ternary lithium batteries have higher energy density and higher voltage, so the battery capacity of the same weight battery pack is larger, the distance the car can run is longer, and the speed can be faster. This is the cause of the OEM The important reasons why people choose ternary lithium batteries one after another. But precisely because of this, the global demand for nickel, cobalt and manganese has suddenly increased, especially for cobalt. Cobalt is a rare metal. The world's proven reserves are only more than 7 million tons, and nearly half are located in the African country Congo (DRC). This has made the price of cobalt soar in the past two years, and even reached 350,000 yuan recently. One ton has gradually become a major cost in battery manufacturing. Previously, the ratio of nickel, cobalt and manganese in the positive electrode of ternary batteries processed in our country was mostly 5:2:3, which obviously cannot adapt to the soaring cobalt price today. In order to cope with this situation, current battery manufacturers have begun to reduce the cobalt content in the battery, the most obvious is the research and development and promotion of the NCM811 battery. But what everyone should pay attention to is that the cobalt content in the battery has no direct relationship with the performance of the battery itself. The performance of NCM811 will not be weaker than NCM523, and it will not be worse than NCM111. Therefore, when you buy an electric vehicle, you only need to know the manufacturer and energy density of the battery. As for the cathode material it uses, it doesn't matter, and it's not in the control of you and consumers. 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: Do you know what is the general battery charging voltage and current?