What are the types of cathode materials for lithium-ion batteries

Lithium cobalt oxide is currently the most successful and widely used cathode material in commercial lithium-ion batteries. It is relatively good in terms of reversibility, discharge capacity, charge and discharge efficiency and voltage stability. 2. Lithium nickel oxide Lithium nickel oxide (LiNiO2) has a cubic rock salt structure, which is the same as LiCoO2, but its price is lower than LiCoO2. The theoretical capacity of LiNiO2 is 276mAh/g, the actual specific capacity is 140~180mAh/g, the working voltage range is 2.5V~4.2V[66], there is no limitation of overcharge or overdischarge, it has good high temperature stability and low self-discharge rate. , No pollution, is a layered compound that has been studied more after LiCoO2. However, LiNiO2 as a cathode material for lithium-ion batteries has the following problems to be solved urgently. 3. Lithium manganese oxide my country is rich in manganese resources, and manganese is non-toxic and has low pollution. Therefore, layered LiMnO2 and spinel-type LiMn2O4 have become hotspots in the study of cathode materials. 4. The manganese nickel cobalt composite oxide layered manganese nickel cobalt composite oxide cathode material combines the advantages of the three layered materials LiCoO2, LiNiO2, LiMnO2, and its comprehensive performance is better than any of the above single-component cathode materials, and there is obvious Ternary synergistic effect: by introducing Co, the mixed cations can be reduced and the layered structure of the material can be effectively stabilized; by the introduction of Ni, the capacity of the material can be increased; by the introduction of Mn, not only can the material cost be reduced, but also the material can be improved. Security. The LiMnxNiyCo1-x-yO2 material has a slightly higher charge and discharge platform than LiCoO2, which is suitable for various existing lithium-ion battery applications and is expected to replace various other existing cathode materials. 5. Lithium vanadium oxide Vanadium is a multivalent metal, and can form a variety of oxides with lithium, including layered LiVO2, LixV2O4, Li1+xV3O8, spinel LiV2O4, inverse spinel LiVMO4 (Mu003d Ni,Co). Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Features and application introduction of power lithium batteries