What are the important cathode materials for lithium-ion batteries?

1) It has a high redox reverberation potential, so that the lithium ion battery can reach a higher output voltage; 2) the lithium element content is high, and the material will be extracted with a high density, which makes the lithium ion battery have a higher energy density; 3) chemical reverberation The invariance of the layout in the process should be good, so that the lithium-ion battery has a long cycle life; 4) the electrical conductivity should be high, so that the lithium-ion battery has a brilliant charge and discharge rate function; 5) the chemical and thermal invariance is better, and it is not easy to analyze Fever makes lithium-ion batteries excellent and safe; 6) self-made value makes the cost of lithium-ion batteries low enough; 7) relatively simple manufacturing process, which is convenient for large-scale production; 8) low pollution to the situation, easy to accept and operate. The influence of cathode material on the performance of lithium-ion battery ① Cell energy density Each lithium-ion battery cathode material has its theoretical energy density. When a cathode material is selected, the upper limit of the cell energy density is selected. The amount design of the positive electrode material and the tap density in the process of processing and construction also have an impact on the energy density of the battery cell product. ②The type of positive electrode material with different cell power density determines the general category of lithium-ion battery charge and discharge power. Some details of the material, as a help factor, will also affect the power characteristics. For example, the invariance of the crystal layout of the cathode material, particle size, doping atoms, carbon coating process, material preparation methods, etc. The above factors ultimately affect the power density of lithium-ion batteries by affecting the ability of the positive electrode material to contain lithium ions and the patency of the deintercalation and insertion channels. ③There are many factors affecting the cycle life of the battery cell, which are related to the material of the positive electrode. The important ones are the loss of the active material of the positive electrode material in the cycle, and the collapse of the material layout during the charging and discharging process. Attenuation of power. The impurities in the positive electrode material are like elemental iron and trivalent iron. The city and the electrolyte are used for each other, which presents undesirable side effects, which may cause internal micro short circuits. Over the years, my country's new energy vehicles have grown rapidly, which has launched a strong demand for power lithium-ion batteries. The positive electrode material is the most important raw material for lithium-ion batteries. In the current market, positive materials for power lithium batteries have the three characteristics of system diversification, demand-oriented nature and more changes in the market. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.