What are the advantages and disadvantages of lithium manganate batteries

The advantages of lithium manganate batteries are good rate performance, easier preparation and lower cost. The disadvantage is that the high temperature performance and cycle performance are poor due to the dissolution of manganese. Through doping with aluminum and sintering granulation, the high temperature performance and cycle performance have been greatly improved, which can basically meet the actual use. In general, lithium manganate batteries have low cost, strong stability, strong low temperature performance, poor high temperature performance, and slightly faster attenuation. The spinel structure of lithium manganate is very distinctive compared with its two congeners, that is, the advantages and disadvantages are very prominent. Its advantages are: low temperature resistance, good rate performance, and relatively easy preparation. The disadvantages are: the material itself is unstable and needs to be mixed with other materials, poor high temperature performance, poor cycle performance, and fast attenuation. These shortcomings of lithium manganate come from the characteristics of manganese. However, due to the widespread existence of manganese, it has clear cost advantages. Lithium manganate is one of the more promising lithium ion cathode materials. Compared with traditional cathode materials such as lithium cobalt oxide, lithium manganate has abundant resources, low cost, and No pollution, good safety, good rate performance and other advantages, it is an ideal power lithium-ion battery cathode material, but its poor cycle performance and electrochemical stability greatly limit its industrialization. There are three kinds of lithium manganese oxide: 1. Layered lithium manganese oxide LiMnO2, theoretical capacity 285mA-h/g, voltage platform 4V. The layered structure is difficult to synthesize and unstable, and it is easy to generate Li2Mn204 spinel structure, which leads to a drop in voltage plateau, poor stability, and irreversible capacity degradation. 2. High voltage spinel lithium manganese oxide LiMn204, theoretical capacity 148mA-h/g, voltage platform 4.15. The high temperature performance is poor, and the capacity attenuation above 55℃ is serious. It is also easy to generate Li2Mn204 spinel structure, resulting in a drop in voltage plateau, poor stability, and irreversible capacity degradation. Industrial manganese acid carp currently uses this kind of carp. 3. Spinel lithium manganese oxide Li2Mn2O4, low voltage (3V), low passenger volume, and poor circulation, are all studying how to guard against such things. 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: How about the life of the ternary polymer lithium battery