The importance of the theory of lithium ion battery cathode material

Source: 2020 - 04 - As hits: 12 times the importance of lithium ion battery anode materials of lithium ion battery list at present, the performance of lithium ion anode materials and the price is restricting the further to the development of high energy, long life and low cost. In theory, a layered structure and the structure of the spinel material can be used as a lithium ion battery cathode material. Compared with the negative battery, the development of the anode materials slightly slower. The reason is that make it into practical material is not easy. Even small changes in the preparation process can also lead to the vast difference between the material on the structure and performance. Generally speaking, in the part of the lithium ion battery products, the anode material occupies the most important position. The quality of the anode materials directly determines the final performance of the lithium-ion battery products. About 40% of the cost of battery cathode material. Lithium ion battery cathode material has become a bottleneck restricting the development of high performance lithium ion battery in China. In addition, the research progress of anode materials also shows the development of lithium ion battery cathode materials of broad prospects. So we request to the anode materials are as follows 1. Battery reaction time should have larger gibbs free energy, to ensure high battery voltage; 2. Discharge process of the change of gibbs free energy should be small, to ensure that the output voltage is close to a constant; 3, the anode and the material should have low oxidation potential, namely, relative to the metal lithium have higher voltage; 4, as far as possible light, but it can store large amounts of lithium, ensure that large capacity; 5. Good electronic conductivity; 6. Stable structure, in all the working voltage range, to ensure the service life for a long period of time; 7. The material is cheap, low toxicity.