What are the characteristics of lithium manganese oxide batteries?

The advantages of lithium manganate 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. A cathode material with low cost, safety and good low temperature performance, but its material itself is not stable and easy to decompose and generate gas, so it is mostly used in combination with other materials to reduce the cost of the battery, but its cycle life decays quickly. It is prone to swelling, poor high-temperature performance, and relatively short life. It is mainly used for large and medium-sized batteries and power lithium-ion batteries. Its nominal voltage is 3.7V. There are three kinds of lithium manganate: 1 layered lithium manganate LiMnO2, theoretical capacity 285mAh/g, voltage platform 4V. The layered structure is difficult to synthesize and unstable, and it is easy to generate Li2Mn2O4 spinel structure, which leads to a drop in voltage plateau, poor stability, and irreversible capacity degradation. 2 High voltage spinel lithium manganese oxide LiMn2O4, theoretical capacity 148mAh/g, voltage plateau 4.15. The high temperature performance is poor, and the capacity attenuation above 55℃ is serious. It is also easy to generate Li2Mn2O4 spinel structure, resulting in a drop in voltage plateau, poor stability, and irreversible capacity degradation. Lithium manganate is currently used in industry. 3 Spinel lithium manganese oxide Li2Mn2O4, low voltage (3V), low capacity, poor circulation, are studying how to prevent such things from appearing. Ternary: In order to solve the defects of layered lithium manganate, the ternary material LiNiCoMnO2 (LiNiCoAlO2) in which manganese is replaced by Ni and Co (Al) was invented by doping with metal elements, taking into account the high capacity of lithium nickelate. The voltage, the high voltage and high safety of lithium manganate, the good circulation of lithium cobalt oxide, and the difficulty and instability of the synthesis of lithium manganate lithium nickelate, and the high cost of lithium cobalt oxide have become the current mainstream cathode material. The theoretical capacity is 280mAh/g, the voltage is 2.7~4.2, and the actual capacity is about 160mAh/g. In the next few years, the current three yuan will basically be eliminated after three years, with high nickel and NCA taking the lead. After 10 years, it is estimated that the entire Sanyuan will be eliminated, and there will be a new battery system to replace the Sanyuan. Lithium manganate battery refers to a battery that uses lithium manganate material for the positive electrode. The nominal voltage of lithium manganate battery is 2.5~4.2v. Lithium manganate battery is widely used because of its low cost and good safety. 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: What are the maintenance solutions for UPS batteries?