Explain the advantages and disadvantages of lithium manganese oxide batteries

What about lithium manganese oxide batteries? Lithium manganese oxide has the advantages of good multiplier performance, convenient preparation, and low cost. The disadvantage is that due to the dissolution of manganese, the high temperature performance and cycle performance are not good. Through the doping and sintering of aluminum, the high temperature performance and cycle have been greatly improved, which can basically meet the actual use. Generally speaking, lithium manganate batteries have the characteristics of low cost, strong stability, strong low temperature performance, poor high temperature performance, and fast attenuation. 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 Li2Mn2O4 spinel structure is prone to appear, resulting in a drop in voltage plateau, poor stability, and irreversible capacity attenuation. 2. High-voltage spinel lithium manganese oxide LiMn2O4, theoretical capacity 148mAh/g, voltage plateau 4.15. High temperature performance above 55℃ is poor, and capacity degradation is serious. Li2Mn2O4 spinel structure is prone to appear, resulting in a drop in voltage plateau, poor stability, and irreversible capacity degradation. Currently, lithium manganate is widely used in industry. 3. Spinel lithium manganese oxide Li2Mn2O4, low voltage (3V), low capacity, poor circulation, is studying how to prevent this. Ternary: In order to solve the defects of layered lithium manganese oxide, nickel and manganese ternary materials Co., Ltd. (Al) were invented by doping metal elements instead of LiNiCoMnO2 (LiNiCoAlO2), high-voltage, high-capacity nickel acid Lithium manganese oxide has high pressure and high safety, good circulation of lithium cobalt oxide, and overcomes the difficulty and instability of lithium nickel oxide lithium manganate synthesis and the high cost of lithium cobalt oxide. It has become the current mainstream cathode material. The theoretical capacity is 280mAh/g, and the voltage is 2.7-4.2. The current actual capacity is about 160mAh/g. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it.