On the Importance of Lithium Ion Battery Cathode Materials

Importance of Lithium Ion Cathode Materials List of Lithium Ion Batteries At present, the performance and price of lithium ion anode materials are the bottleneck restricting their further development towards high energy, long life and low cost. Theoretically, materials with a layered structure and a spinel structure can be used as cathode materials for lithium-ion batteries. Compared with the negative battery, the development of positive electrode materials is slightly slower. The reason is that it is not easy to make it into practical materials. Even small changes in the preparation process can lead to huge differences in the structure and even performance of the material. Generally speaking, in the components of lithium-ion battery products, the cathode material occupies the most important position. The quality of the cathode material directly determines the performance indicators of the final lithium-ion battery product. The cathode material accounts for about 40% of the battery cost. Lithium-ion battery cathode materials have become a bottleneck restricting the development of high-performance lithium-ion batteries in my country. In addition, the research progress of anode materials also shows the broad prospects for the development of anode materials for lithium-ion batteries. Therefore, our requirements for the cathode material are as follows: 1. The battery should have a large Gibbs free energy during reaction to ensure a higher battery voltage; 2. The change in the Gibbs free energy during the discharge process should be small to ensure output The voltage is close to constant; 3. The positive electrode and the material should have a lower oxidation potential, that is, a higher voltage related to metal lithium; 4. As light as possible, but can store a large amount of lithium to ensure a large capacity; 5. Good electronic conductivity Sex; 6. Stable structure, in all operating voltage ranges, to ensure a long cycle life; 7. Cheap materials, low toxicity. 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: Research on the heating characteristics of lithium-ion battery discharge cycle