Features and advantages of lithium manganate battery

The characteristics of lithium manganate battery is a kind of lithium ion battery. Regarding the classification of lithium ion battery, since its negative electrode is basically carbon raw material, the important classification method in the industry is based on the negative electrode material of lithium ion battery. And separately. Lithium manganate battery is a kind of battery that uses lithium manganate as the positive electrode. So, what is lithium manganese oxide? It is made of EMD (a special material for mercury-free alkaline manganese batteries) and lithium carbonate (also used as a raw material), plus corresponding additives, after mixing, sintering and other steps. . Now, when we talk about lithium manganate, we say that it is a spinel structure, which is the crystal shape used in lithium-ion batteries, and when lithium manganate is not used in lithium-ion batteries, it has a layered structure. The spinel structure is more stable in relation to the layered structure (although based on chemical properties, the geometric stability of different shapes seems to be conceivable), so they are still used in practice. In addition to lithium manganate, the anodes of lithium cobalt oxide and ternary lithium-ion batteries also have spinel structure, but the spinel structure of lithium manganate and its two similar characteristics are very obvious, that is, its advantages and disadvantages are very prominent. . Its advantages are: low temperature resistance, good multiplier performance, and easy to prepare. The disadvantages are: the material itself is unstable and must be mixed with other materials. It has good high temperature performance, poor cycle performance, and fast attenuation. These shortcomings of lithium manganate stem from the characteristics of manganese. However, the widespread existence of manganese gives it a significant cost advantage. Because the lithium manganate material has such distinctive characteristics, people will take advantage of its advantages and suppress its shortcomings, so that lithium manganate batteries can be used in different fields, usually called A and B applications. Type A refers to power lithium batteries, which pay attention to safety and cycle performance, and require a reversible capacity of 100~115mAh/g, which can maintain 80% of the capacity after 500 cycles. Class B is mainly used in consumer electronic products (mobile phones). It is characterized by large capacity. Generally, the reversible capacity is required to be 120 mAh/g, but only 60% of the capacity is required to be maintained after 300 to 500 cycles. The different performance of these two batteries is achieved during the production process. As mentioned earlier, the preparation of lithium manganate is relatively simple. If it is processed into a positive electrode suitable for type A and type B batteries, the additives and operating processes are different, and the synthesis method is also different. Specifically: high temperature solid phase method, melt immersion method, microwave synthesis method, co-precipitation method, hydrothermal synthesis method, etc. If each preparation method is described in detail, it is a manufacturing process problem. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Maintenance and use of Ni-MH batteries