Analysis on the advantages and disadvantages of ternary lithium batteries

The ternary lithium battery has its advantages and disadvantages. The ternary lithium battery is a kind of lithium battery: the first is to do the positive data of the battery. Generally, the cathode of a lithium battery is lithium cobalt oxide. The ternary lithium battery is a battery with excellent comprehensive performance, balanced capacity and safety. The important functions and strengths of the three metal elements are as follows: Co3+: Reduce cation mixing space, stabilize data layered structure, reduce impedance value, increase conductivity, and improve cycle and power performance. Ni2+: can improve the ability of the data (improve the volume energy density of the data), and due to the similar Li radius and Ni, too much Ni will also lead to mixed lithium nickel due to dislocations and the concentration of nickel ions in the Li lithium layer. Regarding lithium, the more difficult it is to conquer the layered structure, resulting in poor electrochemical performance. Mn4+: It can not only reduce the cost of data, but also improve the security and stability of data. However, excessive manganese content is prone to spinel phase, destroying the layered structure, resulting in a decrease in capacitance and cycle attenuation. Ternary lithium battery has its advantages and disadvantages. Ternary lithium battery has many advantages. 1. High voltage channel Voltage channel is an important indicator of battery energy density, which determines the basic efficiency and cost of the battery. The higher the voltage channel, the larger the specific capacity. The higher the voltage channel of the battery with the same volume, components, or even the same ampere hour, the longer the ternary data range of the lithium battery. The voltage channel of the ternary data is significantly higher than that of lithium iron phosphate, the high-voltage line reaches 4.2 volts, and the discharge channel reaches 3.6 or 3.7 volts. 2. High energy density The biggest advantage of high energy density is the ternary lithium battery, and the energy density of the voltage channel battery is an important goal. The higher the resolution unit, basic performance and cost, the higher the voltage channel, the larger the specific capacity, so the same The size, weight, and even the same battery, the high-voltage channel ternary lithium battery has a longer life. 3. High vibration density Vibration density refers to the mass per unit volume measured after the powder in the container is vibrated under specified conditions. Bulk density or bulk density (called bulk density in some industries) refers to the mass of the sample divided by its volume, which includes the sample itself and the volume of the pores and gaps of the sample. The ternary lithium battery has its advantages and disadvantages. The ternary lithium battery has poor safety, high temperature resistance, short life, and poor discharge performance. Poor safety and short cycle life are important shortcomings of ternary lithium batteries, especially their safety performance has always been an important factor restricting their large-scale configuration and large-scale integrated applications. A large number of actual measurement results show that it is difficult for large-capacity ternary batteries to pass safety tests such as acupuncture and overcharge. This is the reason why large-capacity batteries generally need to introduce more manganese, or even be mixed with lithium manganate. The 500-cycle life of lithium batteries is at an intermediate level, so the important application areas of ternary lithium batteries are consumer electronics such as 3C digital products. 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 article: Points to note when purchasing lithium batteries