Lifepo4 battery manufacturer Specialized in Energy Storage Battery since 2009.

On the importance of lithium ion cathode materials

by:dcfpower     2021-03-26
u003cpu003eu003c/pu003e At present, the performance and price of lithium ion cathode materials are the bottleneck restricting its further development towards high energy, long life and low cost. One of the key technologies for the development of high energy lithium ion is the development of cathode materials. In theory, 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 the positive electrode material is slightly slower. The reason is that it is not easy to prepare a practical material, and small changes in the preparation process can lead to huge differences in the structure and performance of the material. Generally speaking, in the composition 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 up to 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 progress made in the research of cathode materials also shows the broad prospects for the development of cathode materials for lithium-ion batteries. Therefore, our requirements for cathode materials are as follows: 1. The battery response should have a large Gibbs free energy to ensure that it can provide a high battery voltage; 2. The Gibbs free energy change during the discharge process should be small to ensure that the output voltage is close Is a constant; 3. The positive and material should have a low oxidation potential, that is, a higher voltage relative to metal lithium; 4. As light as possible, but can store a large amount of lithium to ensure a large capacity; 5. Have a good The electronic conductivity; 6. The structure is stable within all operating voltages, ensuring a long cycle life; 7. The material is cheap and low toxicity. u003c/pu003e
Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...
We will get back to you asap